Re: mod_python, user missing
So damn simple that i am embarrassed :D Now my news get added with user. Thanks :) -- (8) [EMAIL PROTECTED] wrote: Good question, according to the documentation it should work, I'll push this onto the mod_python mailing list for discussion and get a bug report posted if necessary. In the meantime, you could use the following work around: def __auth__(req, user, passwd): req.user = user if user == 'noppa' and passwd == 'potti': return True else: return False Ie., explicitly set req.user in the __auth__ method. -- http://mail.python.org/mailman/listinfo/python-list
Re: Suggesting a new feature - Inverse Generators
Jordan Rastrick wrote: No, it's nothing special about groupby. record simply stores its state in a mutable default parameter. This isn't general good practice: at least you have to be careful with it. You can see the behavior in the following example: def accumulate(value, accum = []): ... accum.append(value) ... return accum ... accumulate(1) [1] accumulate(2) [1, 2] accumulate(6) [1, 2, 6] Wow I'd never seen this kind of thing in examples of Python code. Although its really neat, it doesn't really make sense, intuituvely to me. Why does accum remember its state - I suppose its to do with the scope of arguments (as opposed to method variables) or something like that? Michael's accumulator uses the fact that default arguments are only evaluated once -- when the function is created. The behaviour shown above is actually a common trap every newbie has to experience once until he learns the workaround: def accumulate(value, a=None): if a is None: a = [] a.append(value) return a Still, thats powerful. But I see why its not standard use - it could be easily abused! There are limitations, too. If you want more than one accumulator you have to pass the accum argument explicitly or wrap accumulate() into a factory: def make_accumulator(): def accumulate(value, a=[]): a.append(value) return a return accumulate Sill, you cannot get hold of the result of the accumulation without modifying it. One way to fix that: def make_accumulator(): ... a = [] ... def accumulate(value): ... a.append(value) ... return a, accumulate ... items1, accu1 = make_accumulator() for i in range(4): accu1(i) ... items1 [0, 1, 2, 3] items2, accu2 = make_accumulator() for i in abc: accu2(i) ... items2 ['a', 'b', 'c'] items1 [0, 1, 2, 3] Now this is all nice and dandy to play around with and learn something about Python's scoping rules, but you can get the same functionality in a straightforward way with a callable object (like Bengt Richter's Grouper) and that is what I would recommend. Peter -- http://mail.python.org/mailman/listinfo/python-list
__getslice__ passed INT_MAX rather than sys.maxint for missing endpoint?
Hi, I don't actually know Python; I'm just trying to debug a problem I encounted in another program, so apologies if this has been covered before. I did do some Google searches though, and didn't find anything that specifically addressed this :) According to the documentation at http://docs.python.org/ref/sequence-methods.html, __getslice__ is passed sys.maxint for a missing endpoint (foo[i:]). However, as far as I can tell, it's actually passing INT_MAX. I'm running Python 2.4 on an Alpha running NetBSD 2.0, an LP64 platform, so the two aren't the same. INT_MAX is 2^32-1, whereas sys.maxint is LONG_MAX: 2^64-1. So, am I misunderstanding things, or is this a doc bug, or a code bug? FWIW, the problem I encountered was some code that did something like: def __getslice__(self, a, b): if b == maxint: b = self.length # this never got executed, causing problems -- Name: Dave Huang | Mammal, mammal / their names are called / INet: [EMAIL PROTECTED] | they raise a paw / the bat, the cat / FurryMUCK: Dahan | dolphin and dog / koala bear and hog -- TMBG Dahan: Hani G Y+C 29 Y++ L+++ W- C++ T++ A+ E+ S++ V++ F- Q+++ P+ B+ PA+ PL++ -- http://mail.python.org/mailman/listinfo/python-list
Re: DBAPI Paramstyle
Bob Parnes [EMAIL PROTECTED] wrote: I have a mediocre talent at programming, which is why I chose python. For me it was a good choice. I note this so that I hope you understand why I say that I don't know what you are driving at. My understanding is that a paramstyle is more efficient than the traditional python approach for repeated use of a query. If so, then I do not see how the choice of a parameter is relevant. If it is more efficient only in a specific abstract case, then one would have to look for other reasons to use it in a practical application. In theory, using a paramstyle allows the query to be sent to the SQL database backend and compiled like a program. Then, successive uses of the same query can be done by sending just the parameters, instead of sending the entire query string to be parsed and compiled again and again. This is commonly done with large production databases like SQL Server and Oracle. For a complicated query, it can be a significant time savings. However, to the best of my knowledge, none of the Python dbabi implementations actually do that. So, the primary benefit of the paramstyle method is that the database provider inserts whatever quoting is required; you don't have to remember to put single quotes around the arguments, and protect single quotes within the arguments by doubling them, and so on. -- - Tim Roberts, [EMAIL PROTECTED] Providenza Boekelheide, Inc. -- http://mail.python.org/mailman/listinfo/python-list
Re: ANN: Twisted version 2.0
Christopher Armstrong [EMAIL PROTECTED] wrote: Twisted 2.0 is a major upgrade, changing many things not only in the code but also in the structure of the project. As of 2.0, Twisted was split up into many sub-projects which you can read about in the Twisted Split FAQ[1]. 2.0 also marks the first release including the migration to the Zope Interface framework as opposed to Twisted's own built-in interface/adapter system. Another FAQ was made available[2] for those curious about the change. Many, tons, and lots of other changes have been made in this release. The NEWS[3] file contains a high-level overview of most of these changes. Changes in now-split subprojects are available on their individual project pages[4]. Good golly. I used to joke that every how can I... question on this newsgroup can be answered with a 4-line application using Twisted, but now it's grown even more? Remember the Master Control Program from Tron? I think of Twisted as Python's MCP. -- - Tim Roberts, [EMAIL PROTECTED] Providenza Boekelheide, Inc. -- http://mail.python.org/mailman/listinfo/python-list
Re: float default formatting
Bernard Delmée [EMAIL PROTECTED] wrote: Is there a simple way to modify the default sprintf mask used for floats ? (eg something like sys.float_mask = '%.2f') I've tried assigning to float.__dict__[ '__str__' ], but that's apparently not allowed. No. The mask string is passed relatively directly to sprintf, with no hidden charges or destination fees. %f gets you the whatever your C library does by default. This is one way, but there are more efficient methods: FLT = %.2f print (abc=+FLT+ def=+FLT) % (3.0,4.5) Are you trying to do currency? There are better ways, using the locale methods. -- - Tim Roberts, [EMAIL PROTECTED] Providenza Boekelheide, Inc. -- http://mail.python.org/mailman/listinfo/python-list
Re: Grouping code by indentation - feature or ******?
Rocco Moretti [EMAIL PROTECTED] wrote: Antoon Pardon wrote: I have problems with all languages currently available, so I use those which rub me wrong the least. ... [I]t doesn't weight heavy enough to go and use an other language, although I keeping looking at the other languages. I think the operational definition of a zealot is someone who thinks what they have is absolutely perfect, and refuses to examine the alternatives. Not a very inspiring slogan though: Python - the least of 1,000+ evils. Or, paraphrasing Mark Twain, Python is the worst possible programming language, except for all the others. -- - Tim Roberts, [EMAIL PROTECTED] Providenza Boekelheide, Inc. -- http://mail.python.org/mailman/listinfo/python-list
Re: Grouping code by indentation - feature or ******?
Tim Tyler [EMAIL PROTECTED] escribió en el mensaje news:[EMAIL PROTECTED] What do you guys think about Python's grouping of code via indentation? Is it good - perhaps because it saves space and eliminates keypresses? Or is it bad - perhaps because it makes program flow dependent on invisible, and unpronouncable characters - and results in more manual alignment issues by preventing code formatters from managing indentation? I particularly hate it, but Python has lots of good things which compesate that (another annoying point of Python are slices -- mine are always off by 1). I always write explicitly ends as #end, so that I can reorganice the code easily if necessary. Maybe in the future, when Ruby matures, I could change my mind, but currently Python is still my favourite scripting language (as formerly was Tcl). Javier ___ Javier Bezos| TeX y tipografía jbezos at wanadoo dot es| http://perso.wanadoo.es/jbezos |... CervanTeX (Spanish TUG) | http://www.cervantex.org -- http://mail.python.org/mailman/listinfo/python-list
Re: html tags and python
Hansan none wrote: Hi all I am making something for my webpage Where the user can choose a month: I have made that with a dropdown box. select option name = 1 value=1January option name = 2 value=2February option name = 3 value=3March option name = 4 value=4April option name = 5 value=5May option name = 6 value=6June option name = 7 value=7July option name = 8 value=8August option name = 9 value=9September option name = 10 value=10October option name = 11 value=11November option name = 12 value=12December /select The thing is: I also want the user to choose a date I will make this with another dropdownbox. But if the first month is selected, then there should be 31 days in the days dropdownbox, if the second month is selected there should be 28 days in the dropdownbow. What if the year is 2004? Then I assume you want 29 days in the listbox. And that, of course, means they have to choose the year first. This can be done, but it's a lot of trouble. You might consider allowing 1 to 31 and validating the numbers in your onSubmit handler. Or, even better, skip the listbox and just let me type the damn numbers myself. I hate being forced to fall back to my mouse to type in a date, when I can type 3 tab 25 tab 2005 much quicker. To do that with your code, I have to type m tab 2 2 2 2 2 2 tab 2005. As an alternative, there are Javascript-based mini-calendars you can download that popup a little window with the current month, and let you click on the date. -- - Tim Roberts, [EMAIL PROTECTED] Providenza Boekelheide, Inc. -- http://mail.python.org/mailman/listinfo/python-list
Re: Suggest more finesse, please. I/O and sequences.
Dnia Fri, 25 Mar 2005 21:09:41 -0500, Peter Hansen napisa(a):
Thanks for comments! :)
Qertoip wrote:
Good friend of mine heard about my attempt to create compact, simple Python
script and authored the following PHP script:
[snip 7-line PHP script]
...which has the same functionality with less actual code lines [7].
I'm a little bit confused, since I considered Python more expressive then
PHP. The more I'm interested in improving my implementation now :)
It looks like this [11 actual code lines]:
[snip 11-line Python]
--
import sys
corpus = {}
for word in open(sys.argv[1]).read().split():
corpus[word] = corpus.get( word, 0 ) + 1
words = reversed(sorted(data[::-1] for data in corpus.iteritems()))
open(sys.argv[2], 'w').writelines('%7d : %s\n' % data for data in words)
--
Is the file automatically closed in both cases?
I'm curious if either this or the PHP does what is really
wanted, however. The above doesn't split on words, but
merely on whitespace, making the results fairly meaningless
if you are concerned about punctuation etc.
You are perfectly right, but the requirements were intentionally
simplified, ensuring 0-errors input and allowing words like 'hey,!1_go'
I aim to make my implementation as concise as possible but
*steel being natural, readable and clear*.
--
Pozdr.
Piotrek
--
http://mail.python.org/mailman/listinfo/python-list
Re: DBAPI Paramstyle
Tim Roberts wrote: In theory, using a paramstyle allows the query to be sent to the SQL database backend and compiled like a program. Then, successive uses of the same query can be done by sending just the parameters, instead of sending the entire query string to be parsed and compiled again and again. This is commonly done with large production databases like SQL Server and Oracle. For a complicated query, it can be a significant time savings. However, to the best of my knowledge, none of the Python dbabi implementations actually do that. kinterbasdb does. -- http://mail.python.org/mailman/listinfo/python-list
Re: tree data structure
couple of links for python tree: http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/217212 http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/201423 http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/305313 http://www.rexx.com/~dkuhlman/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Why is a JIT compiler faster than a byte-compiler
Hallchen! dodoo [EMAIL PROTECTED] writes: http://www-900.ibm.com/developerworks/cn/linux/sdk/python/charm-28/index_eng.shtml I can't reach it. Is there an alternative URL? Tsch, Torsten. -- Torsten Bronger, aquisgrana, europa vetus -- http://mail.python.org/mailman/listinfo/python-list
Python slogan, was Re: Grouping code by indentation - feature or ******?
Tim Roberts wrote: Rocco Moretti [EMAIL PROTECTED] wrote: Antoon Pardon wrote: I have problems with all languages currently available, so I use those which rub me wrong the least. ... [I]t doesn't weight heavy enough to go and use an other language, although I keeping looking at the other languages. I think the operational definition of a zealot is someone who thinks what they have is absolutely perfect, and refuses to examine the alternatives. Not a very inspiring slogan though: Python - the least of 1,000+ evils. Or, paraphrasing Mark Twain, Python is the worst possible programming language, except for all the others. I've been trying to establish that a while ago, but would attribute it to Winston Churchill -- so I'm a little confused now. Can you provide the text where it's taken from? Peter PS: Perhaps we can settle on (with apologies to Groucho Marx): I wouldn't want to program in a language I can actually understand. -- http://mail.python.org/mailman/listinfo/python-list
Re: html tags and python
Hi.
Yeah I also like just to be able to write in numbers.
That is how it works right now.
But then I will have to make some code, that validates if the day number is
higher than allowed.
Like if it is January, the days arnt allowed to be higher than 31.
Will one be so kind and explain how I write that code:
Right now, the user has to put the data into a form:
print '''form action='insertevent.py'br
pTitle :br INPUT type=text NAME=title
pMonth (1-12):br INPUT type=text NAME=month
pDay (1-31):br INPUT type=text NAME=day
pStart (00.00):br INPUT type=text NAME=start/p
pEnd (00.00):br INPUT type=text NAME=eventend/p'''
print '''pinput type=submit value='Submit'/p/form'''
print '''/body /html'''
Then it runs the insertevent.py script, which puts the data into my
database.(Using postgresql)
form = cgi.FieldStorage()
title = form[title].value
month = form[month].value
day = form[day].value
start= form[start].value
eventend = form[eventend].value
insert_command = INSERT INTO events1(title, maanedid, dage1id, start,
eventend) VALUES('%s', '%s', '%s', '%s' , '%s') %(title, month, day, start,
eventend)
cur.execute(insert_command)
insert_command2 = SELECT events1.eventsid FROM events1 WHERE events1.title
= '%s' AND events1.maanedid = '%s' AND events1.dage1id = '%s' AND
events1.eventstart = '%s' AND events1.eventend = '%s' %(title, month, day,
eventstart, eventend)
cur.execute(insert_command2)
res = cur.fetchall()
new_idevents = res[0][0]
insert_command3 = INSERT INTO evr1 (eventsid, maanedid, dage1id) VALUES
( '%s', '%s', '%s') %(new_idevents, month, day)
cur.execute(insert_command3)
connect.commit()
cur.close()
connect.close()
print brArrangemenetet er nu oprettet.
print /form/body /html
Im which scritp, and how do I make an error message if the day is out of
range.
It is prolly something like:
if month = 1
then days have to be 1 and 32
else print day entered out of range
if month = 2
and so on...
Thanks for all your help, somehow it just makes more sense when I see it, I
am still new to the whole code thing :)
Thanks
Tim Roberts [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Hansan none wrote:
Hi all
I am making something for my webpage
Where the user can choose a month: I have made that with a dropdown box.
select
option name = 1 value=1January
option name = 2 value=2February
option name = 3 value=3March
option name = 4 value=4April
option name = 5 value=5May
option name = 6 value=6June
option name = 7 value=7July
option name = 8 value=8August
option name = 9 value=9September
option name = 10 value=10October
option name = 11 value=11November
option name = 12 value=12December
/select
The thing is:
I also want the user to choose a date
I will make this with another dropdownbox.
But if the first month is selected, then there should be 31 days in the
days
dropdownbox, if the second month is selected there should be 28 days in
the
dropdownbow.
What if the year is 2004? Then I assume you want 29 days in the listbox.
And that, of course, means they have to choose the year first.
This can be done, but it's a lot of trouble. You might consider allowing
1
to 31 and validating the numbers in your onSubmit handler.
Or, even better, skip the listbox and just let me type the damn numbers
myself. I hate being forced to fall back to my mouse to type in a date,
when I can type 3 tab 25 tab 2005 much quicker. To do that with your
code, I have to type m tab 2 2 2 2 2 2 tab 2005.
As an alternative, there are Javascript-based mini-calendars you can
download that popup a little window with the current month, and let you
click on the date.
--
- Tim Roberts, [EMAIL PROTECTED]
Providenza Boekelheide, Inc.
--
http://mail.python.org/mailman/listinfo/python-list
Re: mysteriously nonfunctioning script - very simple
[EMAIL PROTECTED] (Sean McIlroy) (SM) wrote: SM Can anybody help me make sense of the fact that the following script SM doesn't work? It's so simple I can't imagine what I'm missing. Any SM help will be much appreciated. What do you mean `it doesn't work'? -- Piet van Oostrum [EMAIL PROTECTED] URL: http://www.cs.uu.nl/~piet [PGP] Private email: [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: html tags and python
Hansan wrote: Hi. Yeah I also like just to be able to write in numbers. That is how it works right now. But then I will have to make some code, that validates if the day number is higher than allowed. Like if it is January, the days arnt allowed to be higher than 31. Will one be so kind and explain how I write that code: Just use the datetime module: Python 2.4.1a0 (#2, Mar 1 2005, 15:45:39) [GCC 3.3.5 (Debian 1:3.3.5-8ubuntu2)] on linux2 Type help, copyright, credits or license for more information. from datetime import date date(2004, 2, 29) datetime.date(2004, 2, 29) date(2005, 2, 29) Traceback (most recent call last): File stdin, line 1, in ? ValueError: day is out of range for month /patrik -- http://mail.python.org/mailman/listinfo/python-list
Embedding Python
Hi!
I wanted to run some Python code from inside a C program, so I did it
like it was explained in the Python manual:
#include Python.h
int main(int argc, char *argv[]) {
Py_Initialize();
PyRun_SimpleString(print 'Hallo World!'\n);
Py_Finalize();
return 0;
}
Then I tried to compile this by using the command: gcc halloworld.cpp
But everytime I get the following errors:
/home/mmf/tmp/ccVD2V4h.o(.text+0x1d): In function `main':
: undefined reference to `Py_Initialize'
/home/mmf/tmp/ccVD2V4h.o(.text+0x2a): In function `main':
: undefined reference to `PyRun_SimpleString'
/home/mmf/tmp/ccVD2V4h.o(.text+0x32): In function `main':
: undefined reference to `Py_Finalize'
/home/mmf/tmp/ccVD2V4h.o(.eh_frame+0x11): undefined reference to
`__gxx_personality_v0'
collect2: ld returned 1 exit status
What am I doing wrong?
Markus
--
http://mail.python.org/mailman/listinfo/python-list
Re: Suggest more finesse, please. I/O and sequences.
Qertoip wrote:
Peter Hansen wrote:
--
import sys
corpus = {}
for word in open(sys.argv[1]).read().split():
corpus[word] = corpus.get( word, 0 ) + 1
words = reversed(sorted(data[::-1] for data in corpus.iteritems()))
open(sys.argv[2], 'w').writelines('%7d : %s\n' % data for data in words)
--
Is the file automatically closed in both cases?
Yes. Either as soon as the file object has no more
references to it (with CPython), or as soon as the
application terminates or the garbage collection
executes to reclaim the objects (Jython, IronPython,
and any other Pythons that don't use reference
counting).
Either way, for a small script, it's safe.
-Peter
--
http://mail.python.org/mailman/listinfo/python-list
Re: html tags and python
get the mx package here: http://www.egenix.com/files/python/eGenix-mx-Extensions.html#Download-mxBASE = import mx.DateTime print mx.DateTime.DateTime(2004,2,31) # Feb. 31? Traceback (most recent call last): File stdin, line 1, in ? mx.DateTime.RangeError: day out of range: 31 -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expression
Bengt Richter wrote: On Fri, 25 Mar 2005 23:54:32 -0500, Peter Hansen [EMAIL PROTECTED] wrote: Suggestion: whip up a variety of automated test cases and make sure you run them all whenever you make changes to this code... Goes to show you ;-/ Do we need more tests than these? [snip loads of tests] Hmm... if I were doing this for real, not only would the tests actually *tell* me when there was a failure, but I would also throw in a few more cases involving larger strings that more closely represent the expected real inputs (i.e. using some numbers like 3.1415 and using some strings that have the periods as punctuation such as in the OP's original first test case). That way if, during maintenance, somebody changes the algorithm significantly, I'll be confident that it still covers the broader set of cases, as well as the (exhaustive?) set you've defined, which appear at first glance to cover all the possible combinations of x and 3 and . that might happen... I'd also probably be generating most of the existing test cases automatically, just to be sure I've got 100% coverage. Are you sure you didn't leave out one? And what about, say, .. or .x3.? :-) -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: mysteriously nonfunctioning script - very simple
Sean McIlroy wrote: Can anybody help me make sense of the fact that the following script doesn't work? It's so simple I can't imagine what I'm missing. Any help will be much appreciated. Always post actual tracebacks of the problem, if indeed it is producing a traceback. Do this always by *cut and paste*, not by retyping the text. Make sure not to remove anything important, and make sure you are running the actual code you have posted here. Also always describe the problem in more detail than just doesn't work. For all we know, the code runs fine but its output just doesn't suit you... -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Python slogan, was Re: Grouping code by indentation - feature or ******?
Peter Otten wrote: Tim Roberts wrote: Or, paraphrasing Mark Twain, Python is the worst possible programming language, except for all the others. I've been trying to establish that a while ago, but would attribute it to Winston Churchill -- so I'm a little confused now. Can you provide the text where it's taken from? A little Googling shows it is widely attributed to Churchill but I didn't find an original source. The full quote seems to be democracy is the worst possible form of government except - all the others that have been tried. The most authoritative citation I can find is from this page at The Churchill Centre: http://www.winstonchurchill.org/i4a/pages/index.cfm?pageid=591 Interestingly, this quote is not on their page of famous quotes: http://www.winstonchurchill.org/i4a/pages/index.cfm?pageid=388 Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: Bug in threading.Thread.join() ?
Tim Peters wrote: [Peter Hansen] If you hit Ctrl-C while the join's wait() is occurring, you'll raise a KeyboardInterrupt and bypass the release() call. Then you're doing something other than what you described. Here on WinXP SP2 w/ Python 2.4c2: [snip] I can hit Ctrl+C all day at this point, and nothing (visible) happens. That's because it's sitting in self.__block.wait(), which is in turn sitting in waiter.acquire(), and it's simply not possible for Ctrl+C to interrupt a mutex acquire. As above, I don't know what you're doing. Maybe you're doing a join() with a timeout too? In that case, I doubt anyone gave any thought to what happens if you muck with KeyboardInterrupt too. Yes, definitely doing this with a timeout value on the join(). Changing your example to do that (join(5), say) pretty much demonstrates the trouble... in this case a traceback for KeyboardInterrupt is printed, but the program does not terminate because of the thread stuck at the __stop()'s __acquire(). I'll take your last sentence as a form of blessing to go file a bug report, unless you don't think that's a good idea. Thanks, Tim! -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Python slogan, was Re: Grouping code by indentation - feature or ******?
Or, paraphrasing Mark Twain, Python is the worst possible programming language, except for all the others. Peter I've been trying to establish that a while ago, but would Peter attribute it to Winston Churchill -- so I'm a little confused Peter now. Google thinks it's Winston Churchill as well. I did come across a quote wiki: http://www.wikiquote.org/ None of the quotes attributes to Mark Twain looked like the democracy quote, though he had a few other good ones related to goverment and politics that might be worth a passing glance: http://en.wikiquote.org/wiki/Mark_Twain Skip -- http://mail.python.org/mailman/listinfo/python-list
Re: float default formatting
Are you trying to do currency? There are better ways, using the locale methods. No, just dumping some data structures and I'd rather not check every item's type and format floats explicitly. I was hoping the sprintf mask float's __str__ probably uses was somehow exposed and could be altered. -- http://mail.python.org/mailman/listinfo/python-list
Re: Anonymus functions revisited : tuple actions
Ron_Adam wrote:
On Fri, 25 Mar 2005 18:58:27 +0100, Reinhold Birkenfeld
[EMAIL PROTECTED] wrote:
Ron_Adam wrote:
What if you could:
x = lambda{ x, y: x+y}
Hmm comma creates a problem here. so...
from __future__ import braces
SyntaxError: not a chance
Reinhold ;)
LOL, :-)
Is that to discourage people from wanting to use them as block
designators?
Well, it certainly expresses one basic design principle behind the language.
Together with import this, I consider this to be the Holy Grail of
Python ;)
Reinhold
--
http://mail.python.org/mailman/listinfo/python-list
Re: [perl-python] limericks
In article [EMAIL PROTECTED], Andras Malatinszky [EMAIL PROTECTED] wrote: Xah Lee wrote: Better: there is a Python, pithy mighty, lissome, and tabby algorithms it puffs conundrums it snuffs and cherished by those savvy there is a camel, kooky ugly, petty, ungainly hacking it supports TIMTOWTDI it sports and transports DWIM-wit's fancy Xah [EMAIL PROTECTED] ∑ http://xahlee.org/PageTwo_dir/more.html These limericks just don't work, do they? I mean, the number of syllables is just way off, and then the rhymes are just plain wrong. By all means, don't stop trying, but don't quit your day job yet. A poetry critic, Andras In a huff at the tempo, alas! The meter's too free, So he's telling Xah Lee, Nocturnal employment won't last! -- http://mail.python.org/mailman/listinfo/python-list
Re: Suggesting a new feature - Inverse Generators
Jordan Rastrick [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] But I'm not so much interested in alternate solutions to the problem itself, which is to be honest trivial. I'm intereseted in the implications of the imaginary solution of the Acceptor function. Of course. But you'll get more people interested in your alternatives if you can come up with some use cases that the existing language can't handle easily. -- http://mail.python.org/mailman/listinfo/python-list
Re: Embedding Python
/home/mmf/tmp/ccVD2V4h.o(.text+0x1d): In function `main': : undefined reference to `Py_Initialize' /home/mmf/tmp/ccVD2V4h.o(.text+0x2a): In function `main': : undefined reference to `PyRun_SimpleString' /home/mmf/tmp/ccVD2V4h.o(.text+0x32): In function `main': : undefined reference to `Py_Finalize' /home/mmf/tmp/ccVD2V4h.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0' collect2: ld returned 1 exit status What am I doing wrong? Not linking against libpython.so? -- Regards, Diez B. Roggisch -- http://mail.python.org/mailman/listinfo/python-list
Re: DBAPI Paramstyle
Tim Roberts wrote: In theory, using a paramstyle allows the query to be sent to the SQL database backend and compiled like a program. Then, successive uses of the same query can be done by sending just the parameters, instead of sending the entire query string to be parsed and compiled again and again. This is commonly done with large production databases like SQL Server and Oracle. For a complicated query, it can be a significant time savings. Actually, the slow part is building a query execution plan (deciding which indices to use, join orders, and such). Identifying what is being asked for is trivially fast (compared to any I/O). The DB optimizer works with estimates of running time for many of the possible query plans, and chooses the cheapest of those -- that combinatorial problem is how a DB can chew up CPU time (or save it in some cases). However, to the best of my knowledge, none of the Python dbabi implementations actually do that. This cacheing need not occur anywhere before the DB. There are database systems (DB2 is one) that cache plans by the text of the query. If your query is an exact match with a previously optimized plan (and it hasn't been chucked out of the cache), the plan is retrieved. So, the primary benefit of the paramstyle method is that the database provider inserts whatever quoting is required; you don't have to remember to put single quotes around the arguments, and protect single quotes within the arguments by doubling them, and so on. This _is_ a benefit. Another benefit (greater in my estimation) ls that you are separating code and data to make a more readable (and malleable) query. If things get slow and database access is at fault, you can carry your SQL to a DB expert (sometimes one on site) who can check it to help speed up your system. The DB expert is an SQL dweeb, and will appreciate seeing the SQL done in a straightforward manner. She or he may be able to rewrite the query to improve your access. Perhaps several related queries can be effectively combined (but again, you are talking about an expert in SQL/DB -- they'll need to see all the queries easily in order to help. Perhaps the data access pattern will suggest a change in DB indices (in which case the database administrator can speed up your program without your changing any of your code). You could also be changing the format used to send the data to the database (of that I'm not quite as sure). --Scott David Daniels [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Bug in threading.Thread.join() ?
Peter Hansen wrote: I'll take your last sentence as a form of blessing to go file a bug report... Filed as http://sourceforge.net/tracker/index.php?func=detailaid=1171023group_id=5470atid=105470 I guess it makes more sense for any further discussion to go on there... (Coincidentally, another bug report was filed just a few days ago for a closely related item. As Tim mentioned, the wait() without a timeout can never be interrupted by Ctrl-C, and somebody else reported that as a bug (1167930) only about three days before I encountered this one.) -Peter -- http://mail.python.org/mailman/listinfo/python-list
ossaudiodev full duplex
I'm messing around with trying to record sound reflections off of various objects at different frequencies. I'm using python 2.4 on Fedora Core 3 and I have an SBLive card. Basically, I want to send some samples through a speaker and then record from an input source (the line input on the sound card which I have the output of a mixer going into and a mic plugged into the mixer). So I want to using the soundcard in full duplex mode. I'm trying something like this: number_of_channels= 1 sample_rate= 44100 sample_width= 2 frames_out= get_frames(test.wav) fh= ossaudiodev.open(/dev/dsp, rw) fh.setparameters(ossaudiodev.AFMT_S16_LE, number_of_channels, sample_rate) fh.writeall(frames_out) frames_in= fh.read(number_of_samples * sample_width) fh.close() However, even if I turn off the speakers I get the original output tone back from the read (as well as the input from the mic). I'm assuming it's the same internal buffer somewhere on the soundcard so when I do the read I'm really reading what the write just wrote (because I get that orginal tone in the background even though I turned off the speaker so it's just not the reflections coming back through the mic...it's happening internally somewhere). If I unplug everything from the sound card I'll still get it. I tried closing the filehandle after the write and then reopening it before the read and I also tried opening two filehandles, one to /dev/dsp and another to /dev/dsp1 and still have th same problem. In the above example I tried the ossaudiodev's sync() and reset() functions inbetween the write() and read(). Also still have the same problem even when I do this: fh= ossaudiodev.open(/dev/dsp, w) fh.setparameters(ossaudiodev.AFMT_S16_LE, number_of_channels, sample_rate) fh.writeall(frames_out) fh.close() fh= ossaudiodev.open(/dev/dsp, r) fh.setparameters(ossaudiodev.AFMT_S16_LE, number_of_channels, sample_rate) frames_in= fh.read(number_of_samples * sample_width) fh.close() Any ideas? Am I doing something fundamentally wrong? Any help would be greatly appreciated. Thanks. -richie -- http://mail.python.org/mailman/listinfo/python-list
Re: Grouping code by indentation - feature or ******?
Peter Otten [EMAIL PROTECTED] wrote or quoted: I, Tim Tyler wrote: What do you guys think about Python's grouping of code via indentation? This is a Python newsgroup. Assume that we all have been brainwashed. ;-) I had a good look for comp.lang.python.advocacy before posting my question - and coated my shield with a fresh dose of flame repellant. While the question does have a trollish character - and I can easily imagine I'm not the first to ask it and that participants may be sick of hearing about the issue - I was sincere in wanting to know the answer. Fortunately, I do seem to have elicited some intelligent responses - thanks very much to everyone who answered. FWIW, my initial impression was yuck. After considering the issue, I could see quite a few advantages. At the moment, while rather torn on the whole issue, I seem to be heading back in the direction of my first impressions. -- __ |im |yler http://timtyler.org/ [EMAIL PROTECTED] Remove lock to reply. -- http://mail.python.org/mailman/listinfo/python-list
Re: html tags and python
Hi and thanks for the replies. It is starting to make a little sense. But its still not that clear... If I import the DateTime or install and import the mx package. Where should I then change something in my code? I guess that I will have to see if the entered number is valid when the user clicks the submit button. So it must be when I run my insertevent.py script. So will I have to import the DateTime modul in my form.script or in my insertevent.script And this maybe sound stupid, but will one pls give me an example of what the code could be for maybe January and February. I just cant figure out how they work together, the DateTime modul and the html form. The user can enter a number in the month field and in the day field. Then there have to be a tjeck to see if the entered numbers are valid. If the number entered in the month field is 1 and the number entered in the day field is 32, there have to come anerror report, and the user will get a second try to enter the right numbers. And then if the entered numbers are correct, the data will be inserted in the database ( But I will work on this if condition myself, I think I can figure that out:) So it is just the tjeck to see if the entered numer are valid, I need help with. Thanks for all help, it is highly appreciated, and helps me to understand this new strange but fascinating world of programming. [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] get the mx package here: http://www.egenix.com/files/python/eGenix-mx-Extensions.html#Download-mxBASE = import mx.DateTime print mx.DateTime.DateTime(2004,2,31) # Feb. 31? Traceback (most recent call last): File stdin, line 1, in ? mx.DateTime.RangeError: day out of range: 31 -- http://mail.python.org/mailman/listinfo/python-list
Re: Example Code - Named Pipes (Python 2.4 + ctypes on Windows)
Hello, I am quite familiar with Mark Hammond's win32all. It is excellent. However, I wish that there was more documentation of win32all beyond existing PyWin32.chm. I am aware of Python Programming on Win32 but I do not have access to it at present. Best Regards, /Srijit -- http://mail.python.org/mailman/listinfo/python-list
Re: Grouping code by indentation - feature or ******?
Javier Bezos [EMAIL PROTECTED] wrote or quoted: Tim Tyler [EMAIL PROTECTED] escribi? en el mensaje What do you guys think about Python's grouping of code via indentation? Is it good - perhaps because it saves space and eliminates keypresses? [...] I particularly hate it, but Python has lots of good things which compesate that (another annoying point of Python are slices -- mine are always off by 1). I always write explicitly ends as #end, so that I can reorganice the code easily if necessary. Maybe in the future, when Ruby matures, I could change my mind, but currently Python is still my favourite scripting language (as formerly was Tcl). My current impression is that Python is about the best dynamic language. It helps that it's one of the most popular such languages. One of my concerns about it is that it's too big and complex. I very much favour the smalltalk-inspired idea of keeping the actual language as small as is reasonably possible. I wonder if there are any promising new kids on the dynamic scripting-language block that I haven't heard about yet - i.e. things not on: http://dmoz.org/Computers/Programming/Languages/Scripting/Object-Oriented/ http://dmoz.org/Computers/Programming/Languages/Object-Oriented/Prototype-based/ -- __ |im |yler http://timtyler.org/ [EMAIL PROTECTED] Remove lock to reply. -- http://mail.python.org/mailman/listinfo/python-list
Re: Suggesting a new feature - Inverse Generators
Hmmm, I like the terminology consumers better than acceptors. The ability to have 'full coroutines', or at least more 'coroutiney behaviour' than is provided by generators alone, was I think what I was trying to get at with my original idea, although things got a bit sidetracked by the way I focused on the particular (and not espeically interesting) example I provided. Another factor I think was that I restricted Acceptors far too much in the second version by demanding they receive all their input at once - that meant they weren't much more interesting than a function taking a generator or the like and using its output. The ability for them to accept input and resume execution at any point is an essential part of what would make such a feature interesting. Maybe if they gave you a callable object, and just avoided the whole issue of return value all-together, something like # I wish I could think of a more interesting example :) def combineIntoRecords(listToAppend): accept firstline # etc listToAppend.append(record) # No return value, avoid issues of non-evaluation recordList = [] combine = combineIntoRecords(recordList) for line in filterJunk(lines): combine(line) This acheives the same result as before, but of course now youre free to use combine anywhere else in the code if you wanted. I still think this kind would allow you to do things that can't be done using the other techniques brought up in this discussion... maybe Terry or somebody else familiar with Consumers might know a good example? Anyway this has all been very interesting, and I've learned a lot. I never really had a clue what Stackless Python was before, and now I think I have a vague idea of some of the implications. Not to mention the little tidbit about default argument evaluation. And groupby looks very interesting. Thanks everyone for the host of replies, which have all been of an excellent standard IMO. I only wish being a newbie in other languages was as much fun as it is in Python :) Now to actually finish implementing my text file parser. The only problem is deciding between the dozens of potential different methods... -- http://mail.python.org/mailman/listinfo/python-list
Re: How to ensure Maximize button shows in Linux/Unix (Tkinter)
Harlin Seritt wrote: I have a tkinter program that shows the 'maximize' button while running on Windows but not in Linux. Is there a way to make it show in Linux? On linux (or X-Windows in general) the windowdecorations (which maximize is a part of) are managed by the windowmanager, not the graphical toolkit itself. What windowmanager do you use? If I remember one could get access to the wm using tk and maybe then manipulate some settings. -- Regards, Diez B. Roggisch -- http://mail.python.org/mailman/listinfo/python-list
Re: Grouping code by indentation - feature or ******?
On Sat, 26 Mar 2005 15:42:03 +, Tim Tyler wrote: I very much favour the smalltalk-inspired idea of keeping the actual language as small as is reasonably possible. I wonder if there are any promising new kids on the dynamic scripting-language block that I haven't heard about yet - i.e. things not on: http://dmoz.org/Computers/Programming/Languages/Scripting/Object-Oriented/ http://dmoz.org/Computers/Programming/Languages/Object-Oriented/Prototype-based/ Personally, I'm holding off on any more exploration of dynamic languages until they all settle on a single VM that they all can run on. The problem that a new language faces is that it will have a sucky library, and I use things like Tk or other graphical toolkits for *everything*. Once you can write a new language and still pull in the entire Python library (and, ideally, the entire Ruby, Perl, and who knows what else library), then I think it will be more interesting for me to search out other languages. My next language to learn will probably be C#. (On Mono, though.) -- http://mail.python.org/mailman/listinfo/python-list
Re: How to ensure Maximize button shows in Linux/Unix (Tkinter)
Diez, Thanks for the quick reply. I am running this under KDE. I actually haven't tried doing so under any other wm for the moment. Any ideas how to get it to show in KDE? Thanks, Harlin Seritt -- http://mail.python.org/mailman/listinfo/python-list
How to ensure Maximize button shows in Linux/Unix (Tkinter)
I have a tkinter program that shows the 'maximize' button while running on Windows but not in Linux. Is there a way to make it show in Linux? Thanks, Harlin Seritt -- http://mail.python.org/mailman/listinfo/python-list
Re: How to ensure Maximize button shows in Linux/Unix (Tkinter)
Harlin Seritt wrote: Diez, Thanks for the quick reply. I am running this under KDE. I actually haven't tried doing so under any other wm for the moment. Any ideas how to get it to show in KDE? I also run kde, and it shows that maximze-button. I've no idea why that doesn't work for you. Is it a root-window or some other toplevel window? -- Regards, Diez B. Roggisch -- http://mail.python.org/mailman/listinfo/python-list
Re: The Greatest News Ever!
Ron_Grossi_038 at yahoo.com writes: http://www.jcil.blogspot.com The Greatest News Ever! Wow, what a total bullshit (no offense to christians _ ) Now, what I don't understand is what this is doing in a python newsgroup? -- http://mail.python.org/mailman/listinfo/python-list
Re: Embedding Python
Diez B. Roggisch wrote: /home/mmf/tmp/ccVD2V4h.o(.text+0x1d): In function `main': : undefined reference to `Py_Initialize' /home/mmf/tmp/ccVD2V4h.o(.text+0x2a): In function `main': : undefined reference to `PyRun_SimpleString' /home/mmf/tmp/ccVD2V4h.o(.text+0x32): In function `main': : undefined reference to `Py_Finalize' /home/mmf/tmp/ccVD2V4h.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0' collect2: ld returned 1 exit status What am I doing wrong? Not linking against libpython.so? I don't understand what you mean... Markus -- http://mail.python.org/mailman/listinfo/python-list
Re: Embedding Python
Markus Franz wrote: Diez B. Roggisch wrote: /home/mmf/tmp/ccVD2V4h.o(.text+0x1d): In function `main': : undefined reference to `Py_Initialize' /home/mmf/tmp/ccVD2V4h.o(.text+0x2a): In function `main': : undefined reference to `PyRun_SimpleString' /home/mmf/tmp/ccVD2V4h.o(.text+0x32): In function `main': : undefined reference to `Py_Finalize' /home/mmf/tmp/ccVD2V4h.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0' collect2: ld returned 1 exit status What am I doing wrong? Not linking against libpython.so? I don't understand what you mean... Well, you need to link against the python library to make known where the respective symbols are from. That is also necessary for all other libs out there - e.g. the linker switch -lm links against libm.so. For someone who _codes_ in C/C++ that should be obvious - or so I thought. What build-environment do you use? The line /home/mmf/tmp/ccVD2V4h.o(.eh_frame+0x11): undefined reference to `__gxx_personality_v0' suggest that you also miss linking against libstdc++ - an error that sometimes happened to me too - no idea why, it _should_ be included implicitely when linking C++ objects. No big deal though, just also add it to the linking process. -- Regards, Diez B. Roggisch -- http://mail.python.org/mailman/listinfo/python-list
Re: Example Code - Named Pipes (Python 2.4 + ctypes on Windows)
Srijit Kumar Bhadra [EMAIL PROTECTED] wrote in Here is an example of Multithreaded Pipe Server and Client using the excellent ctypes library (Windows). Excellent. Maybe you would also like to post it to the http://starship.python.net/crew/theller/moin.cgi/CtypesModule Ctypes-Wiki for easier reference? best regards, Harald -- http://mail.python.org/mailman/listinfo/python-list
PyGreSQL binary for Windows
Title: PyGreSQL binary for Windows Has anyone built PyGreSQL for windows 2000 that would be willing to send me the binary version? I do not have a windows compiler and need to run it. Thank you, lance Lance Ellinghaus -- http://mail.python.org/mailman/listinfo/python-list
Re: Grouping code by indentation - feature or ******?
On Fri, 25 Mar 2005 11:31:33 -0800, James Stroud [EMAIL PROTECTED] wrote: On Friday 25 March 2005 08:39 am, Ivan Van Laningham wrote: As far as grouping by indentation goes, it's why I fell in love with Python in the first place. Braces and so on are just extraneous cruft as far as I'm concerned. It's the difference between Vietnamese verbs and Latin verbs;-) Say I buy into the indentation ideology. Python then has this inconsistency: : Why do we need : at the end of our if and for loops? I spend approximately 6 minutes/100 lines of code going back and finding all of the times I missed :. Is it for cheating? if False: print : Now, what happened to the whitespace idea here? This code seems very unpythonic. I think : is great for slices and lamda where things go on one line, but to require it to specify the start of a block of code seems a little perlish. You really don't need a period at the end of a sentences A double space and a capital is enough to tell you where one sentence ends and the next one starts Yet, I find the presence of the period makes written language easier to read in the same way the colon in python makes code easer to read ;) Ron -- http://mail.python.org/mailman/listinfo/python-list
py_compile vs. IndentationError
Why does py_compile print IndentationError in a different format than
SyntaxError? It makes it harder to parse the output in a non-python
program.
Sorry: IndentationError: ('unindent does not match any outer indentation
level', ('foo.py', 19, 17, '\t\t\t return 0.0 \n'))
instead of
File foo.py, line 19
zreturn 0.0
for example.
Is there a way for me to wrap this up in a script and transform the
output on the way out?
Magoo
--
http://mail.python.org/mailman/listinfo/python-list
Re: Example Code - Named Pipes (Python 2.4 + ctypes on Windows)
Srijit Kumar Bhadra [EMAIL PROTECTED] writes: Hello, I am quite familiar with Mark Hammond's win32all. It is excellent. However, I wish that there was more documentation of win32all beyond existing PyWin32.chm. I am aware of Python Programming on Win32 but I do not have access to it at present. At least one chapter of PPW32 is available as sample chapter somewhere on an OReilly site - but you should buy the book anyway imo. For the windows api functions you should refer to Microsoft's docs at MSDN. Thomas -- http://mail.python.org/mailman/listinfo/python-list
Re: Archives and magic bytes
Perhaps this is mostly a reflection on me as a programmer :-} but I found the job surprisingly tricky. No I think you're right... It's not very important for me retrieve exactly what kind of file it is, it could be just something more in my little program (an organizer that put files in the right directories using extensions of files, categories and regular expressions). A really good file identifier is this one(the author is a friend of mine): http://mark0.net/soft-trid-e.html It doesn't work with mono yet but maybe one day I'll try to use it with python... Thanks everybody -- http://mail.python.org/mailman/listinfo/python-list
Re: Embedding Python
Markus Franz [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Hi!
I wanted to run some Python code from inside a C program, so I did it
like it was explained in the Python manual:
#include Python.h
int main(int argc, char *argv[]) {
Py_Initialize();
PyRun_SimpleString(print 'Hallo World!'\n);
Py_Finalize();
return 0;
}
Then I tried to compile this by using the command: gcc halloworld.cpp
But everytime I get the following errors:
/home/mmf/tmp/ccVD2V4h.o(.text+0x1d): In function `main':
: undefined reference to `Py_Initialize'
/home/mmf/tmp/ccVD2V4h.o(.text+0x2a): In function `main':
: undefined reference to `PyRun_SimpleString'
/home/mmf/tmp/ccVD2V4h.o(.text+0x32): In function `main':
: undefined reference to `Py_Finalize'
/home/mmf/tmp/ccVD2V4h.o(.eh_frame+0x11): undefined reference to
`__gxx_personality_v0'
collect2: ld returned 1 exit status
What am I doing wrong?
Markus
This works for me on Redhat 9:
g++ x.cpp -o x -I/usr/include/python2.2 -pthread -lm
-ldl -lutil /usr/lib/python2.2/config/libpython2.2.a
I discovered what libraries to link to by asking distutils:
import distutils.sysconfig
distutils.sysconfig.get_config_var('LIBS')
distutils.sysconfig.get_config_var('SYSLIBS')
g++ links to the right libraries for .cpp files.
-Mark
--
http://mail.python.org/mailman/listinfo/python-list
Re: mysteriously nonfunctioning script - very simple
Fair enough. Here's the verbose version: ## from time import sleep,time,localtime wakeuptime = (7,00) ## I WANT TO BE WOKEN UP AT 7AM (FOR EXAMPLE) onehourlater = (wakeuptime[0]+1, wakeuptime[1]) ## ONE HOUR LATER THAN THAT IS 8AM while not wakeuptime localtime(time())[3:5] onehourlater: sleep(3) ## CHECK THE CURRENT TIME EVERY 3 SECONDS, AND IF IT'S NOT BETWEEN ## 7AM AND 8AM, GO BACK TO SLEEP FOR ANOTHER 3 SECONDS ## CONTROL NEVER REACHES THIS POINT ## Peter Hansen [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED]... Sean McIlroy wrote: Can anybody help me make sense of the fact that the following script doesn't work? It's so simple I can't imagine what I'm missing. Any help will be much appreciated. Always post actual tracebacks of the problem, if indeed it is producing a traceback. Do this always by *cut and paste*, not by retyping the text. Make sure not to remove anything important, and make sure you are running the actual code you have posted here. Also always describe the problem in more detail than just doesn't work. For all we know, the code runs fine but its output just doesn't suit you... -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Embedding Python
This works for me on Redhat 9: g++ x.cpp -o x -I/usr/include/python2.2 -pthread -lm -ldl -lutil /usr/lib/python2.2/config/libpython2.2.a Why did you chose the static variant? This should be equivalent: g++ x.cpp -o x -I/usr/include/python2.2 -pthread -lm -ldl -lutil -lpython2.2 -- Regards, Diez B. Roggisch -- http://mail.python.org/mailman/listinfo/python-list
Re: mysteriously nonfunctioning script - very simple
## from time import sleep,time,localtime wakeuptime = (7,00) ## I WANT TO BE WOKEN UP AT 7AM (FOR EXAMPLE) onehourlater = (wakeuptime[0]+1, wakeuptime[1]) ## ONE HOUR LATER THAN THAT IS 8AM while not wakeuptime localtime(time())[3:5] onehourlater: sleep(3) ## CHECK THE CURRENT TIME EVERY 3 SECONDS, AND IF IT'S NOT BETWEEN ## 7AM AND 8AM, GO BACK TO SLEEP FOR ANOTHER 3 SECONDS It does work for me: wakeuptime = (19,00) onehourlater = (20,00) lt = (18,59) not wakeuptime lt onehourlater True lt = (19:01) not wakeuptime lt onehourlater False And localtime(time())[3:5] returns the desired timetuple. You're sure that's not working? -- Regards, Diez B. Roggisch -- http://mail.python.org/mailman/listinfo/python-list
Re: Example Code - Named Pipes (Python 2.4 + ctypes on Windows)
Srijit Kumar Bhadra wrote: However, I wish that there was more documentation of win32all beyond existing PyWin32.chm. I suspect you have already used the more documentation -- it's the MSDN docs. p -- http://mail.python.org/mailman/listinfo/python-list
Re: mysteriously nonfunctioning script - very simple
Sean McIlroy wrote: Fair enough. Here's the verbose version: from time import sleep,time,localtime wakeuptime = (7,00) ## I WANT TO BE WOKEN UP AT 7AM (FOR EXAMPLE) onehourlater = (wakeuptime[0]+1, wakeuptime[1]) ## ONE HOUR LATER THAN THAT IS 8AM while not wakeuptime localtime(time())[3:5] onehourlater: sleep(3) Maybe you are a little /impatient/ and want to change the above to while not wakeuptime = localtime(time())[3:5] onehourlater: sleep(3) That should wake you up roughly one minute earlier, and thus before you hit Ctrl+C ...again. Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: mysteriously nonfunctioning script - very simple
Sean McIlroy wrote:
Fair enough. Here's the verbose version:
##
from time import sleep,time,localtime
wakeuptime = (7,00)
## I WANT TO BE WOKEN UP AT 7AM (FOR EXAMPLE)
onehourlater = (wakeuptime[0]+1, wakeuptime[1])
## ONE HOUR LATER THAN THAT IS 8AM
while not wakeuptime localtime(time())[3:5] onehourlater: sleep(3)
## CHECK THE CURRENT TIME EVERY 3 SECONDS, AND IF IT'S NOT BETWEEN
## 7AM AND 8AM, GO BACK TO SLEEP FOR ANOTHER 3 SECONDS
## CONTROL NEVER REACHES THIS POINT
##
Works for me in the following slightly-adjusted form (easier for testing):
def alarm(wakeuptime):
#wakeuptime = input('hours: '), input('minutes: ')
onehourlater = (wakeuptime[0]+1, wakeuptime[1])
while not wakeuptime localtime(time())[3:5] onehourlater:
sleep(3)
print 'PLAY A SOUND FILE'
print localtime(time())[3:5]
localtime(time())
(2005, 3, 26, 11, 37, 58, 5, 85, 0)
alarm((11,38))
PLAY A SOUND FILE
(11, 39)
import sys
sys.version
'2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)]'
sys.platform
'win32'
Michael
--
http://mail.python.org/mailman/listinfo/python-list
Re: Embedding Python
Diez B. Roggisch [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] This works for me on Redhat 9: g++ x.cpp -o x -I/usr/include/python2.2 -pthread -lm -ldl -lutil /usr/lib/python2.2/config/libpython2.2.a Why did you chose the static variant? This should be equivalent: g++ x.cpp -o x -I/usr/include/python2.2 -pthread -lm -ldl -lutil -lpython2.2 -- Regards, Diez B. Roggisch On my system, for whatever reason, the .so library isn't present. I have the python-devel package installed. -Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: Embedding Python
Am Samstag, 26. März 2005 20:43 schrieb Mark Tolonen: On my system, for whatever reason, the .so library isn't present. I have the python-devel package installed. I actually can't believe this; do ldconfig -p|grep python as root and look for any output. And remember that the shared library isn't installed by the devel package, but by the standard python package, as the binary /usr/bin/python is only a stub, which chains to the python interpreter in the shared lib (at least for any distribution I know of, it would be braindead to link the command-line interpreter statically anyway). Sample output: heiko heiko # ldconfig -p|grep python libpython2.4.so.1.0 (libc6) = /usr/local/lib/libpython2.4.so.1.0 libpython2.4.so (libc6) = /usr/local/lib/libpython2.4.so libpython2.3.so.1.0 (libc6) = /usr/lib/libpython2.3.so.1.0 libpython2.3.so (libc6) = /usr/lib/libpython2.3.so heiko heiko # -- --- Heiko. pgprh13F5sG2y.pgp Description: PGP signature -- http://mail.python.org/mailman/listinfo/python-list
Turn of globals in a function?
Is there a way to hide global names from a function or class? I want to be sure that a function doesn't use any global variables by mistake. So hiding them would force a name error in the case that I omit an initialization step. This might be a good way to quickly catch some hard to find, but easy to fix, errors in large code blocks. Examples: def a(x): # ... x = y # x is assigned to global y unintentionally. # ... return x def b(x): # hide globals somehow # ... x = y# Cause a name error # ... return x y = True a(False): True b(False): *** name error here *** Ron_Adam -- http://mail.python.org/mailman/listinfo/python-list
Re: Embedding Python
Heiko Wundram wrote: Am Samstag, 26. März 2005 20:43 schrieb Mark Tolonen: On my system, for whatever reason, the .so library isn't present. I have the python-devel package installed. I actually can't believe this; do ldconfig -p|grep python Or, use ldd =python to exactly display what library your current executable is using. (users of a shell other than Zsh must replace '=python' by '`which python`') Reinhold -- http://mail.python.org/mailman/listinfo/python-list
Re: Turn of globals in a function?
Ron_Adam wrote:
Is there a way to hide global names from a function or class?
I want to be sure that a function doesn't use any global variables by
mistake. So hiding them would force a name error in the case that I
omit an initialization step. This might be a good way to quickly
catch some hard to find, but easy to fix, errors in large code blocks.
Examples:
def a(x):
# ...
x = y # x is assigned to global y unintentionally.
# ...
return x
def b(x):
# hide globals somehow
# ...
x = y# Cause a name error
# ...
return x
y = True
a(False):
True
b(False):
*** name error here ***
Ron_Adam
For testing, you could simply execute the function in an empty dict:
a = I'm a
def test():
... print a
...
test()
I'm a
exec test.func_code in {}
Traceback (most recent call last):
File input, line 1, in ?
File input, line 2, in test
NameError: global name 'a' is not defined
This would get more complicated when you wanted to test calling with parameters,
so with a little more effort, you can create a new function where the globals
binding is to an empty dict:
from types import FunctionType as function
testtest = function(test.func_code, {})
testtest()
Traceback (most recent call last):
File input, line 1, in ?
File input, line 2, in test
NameError: global name 'a' is not defined
HTH
Michael
--
http://mail.python.org/mailman/listinfo/python-list
urllib.urlretireve problem
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hello Everybody, I've got a small problem with urlretrieve. Even passing a bad url to urlretrieve doesn't raise an exception. Or does it? If Yes, What exception is it ? And how do I use it in my program ? I've searched a lot but haven't found anything helping. Example: try: urllib.urlretrieve(http://security.debian.org/pool/updates/main/p/perl/libparl5.6_5.6.1-8.9_i386.deb;) except IOError, X: DoSomething(X) except OSError, X: DoSomething(X) urllib.urlretrieve doesn't raise an exception even though there is no package named libparl5.6 Please Help! rrs - -- Ritesh Raj Sarraf RESEARCHUT -- http://www.researchut.com Gnupg Key ID: 04F130BC Stealing logic from one person is plagiarism, stealing from many is research. -BEGIN PGP SIGNATURE- Version: GnuPG v1.2.5 (GNU/Linux) iD8DBQFCRcCk4Rhi6gTxMLwRAlb2AJ0fB3V5ZpwdAiCxfl/rGBWU92YBEACdFYIJ 8bGZMJ5nuKAqvjO0KEAylUg= =eaHC -END PGP SIGNATURE- -- http://mail.python.org/mailman/listinfo/python-list
wxPython Install
Hello All, I will soon have an excuse to install a new operating system on my computer. I would like to know exactly what operating system I should have so that I can get wxPython going. wxPython is my only hold-out on my current system. wxPython seems to need gnome. So I have tried to build garnome and it didn't build all the way..and, well, I've tried so many things trying to get wxPython built that I really don't care to relive the agony by reciting them. But some tools I want to use need wxPython, so I want to get it going. I am iat a particular disadvantage because I don't have root priveleges on my work machine, so I have to get the sysadmin to build it just so before it adorns my desk--because it will not change for a long time. Any omissions or errors (relative to the special needs of wxPython) during installation, and the whole damn system will be boot strapped on top of said error and I'll face the same problem--incompatible library a is incompatible with library b, etc etc etc etc. I should say that I manage my own python in my home directory, building things with the system libraries and/or libraries I have in my home dir that may override the system libraries. This strategy has worked for everything except wxPython. So what system should I install? I want to make damn sure that I can get wxPython going. Again, everything else has worked: scipy, numarray, etc etc etc etc etc etc...but not wxPython. Its a real special exception for some reason. So an explicit distro would be nice, something to the effect of: fedora core x.x.x build x.x or mandrake xx.x.x build x.x revision x Basically, if someone installed a system then put python on and wxPython and it ran out of the box--that's the person I want to hear from. Give me the checksums of the disks you used to install it--I want to make sure its right. I've jacked with it to the point where I don't care to do any tweaking--so please don't ask what exactly is your problem because I've had several dozen and any solutions I could dream of created more problems. If I can't install an operating system then put wxPython on it without jumping through hoops, my probelm will be wxPython. Thank you in advance to the kind person who offers a reliable solution. James -- James Stroud UCLA-DOE Institute of Genomics and Proteomics Box 951570 Los Angeles, CA 90095 http://www.jamesstroud.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Embedding Python
Reinhold Birkenfeld [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Heiko Wundram wrote: Am Samstag, 26. März 2005 20:43 schrieb Mark Tolonen: On my system, for whatever reason, the .so library isn't present. I have the python-devel package installed. I actually can't believe this; do ldconfig -p|grep python Or, use ldd =python to exactly display what library your current executable is using. (users of a shell other than Zsh must replace '=python' by '`which python`') Reinhold $ ldd /usr/bin/python libdl.so.2 = /lib/libdl.so.2 (0x40023000) libpthread.so.0 = /lib/tls/libpthread.so.0 (0x40028000) libutil.so.1 = /lib/libutil.so.1 (0x40036000) libm.so.6 = /lib/tls/libm.so.6 (0x40039000) libc.so.6 = /lib/tls/libc.so.6 (0x4200) /lib/ld-linux.so.2 = /lib/ld-linux.so.2 (0x4000) I also (before I originally posted) did a find / -name libpython* with no success. Looks like Redhat 9 ships with a statically linked version of python. -Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: Embedding Python
Am Samstag, 26. März 2005 21:36 schrieb Mark Tolonen: I also (before I originally posted) did a find / -name libpython* with no success. Looks like Redhat 9 ships with a statically linked version of python. Hmm... Sorry to have thought otherwise... RedHat is braindead. :-) -- --- Heiko. pgpOOfyfBPNer.pgp Description: PGP signature -- http://mail.python.org/mailman/listinfo/python-list
Re: Turn of globals in a function?
On Sat, 26 Mar 2005 20:01:28 GMT, Ron_Adam [EMAIL PROTECTED] wrote: Is there a way to hide global names from a function or class? I want to be sure that a function doesn't use any global variables by mistake. So hiding them would force a name error in the case that I omit an initialization step. This might be a good way to quickly catch some hard to find, but easy to fix, errors in large code blocks. Examples: def a(x): # ... x = y # x is assigned to global y unintentionally. # ... return x def b(x): # hide globals somehow # ... x = y# Cause a name error # ... return x If you put the above def b in e.g. a_module.py, and do a (untested ;-) from a_module import b instead of defining it locally, then the global references from b (and whatever else you import from a_module) should be to the global dict defined for a_module (i.e., its outermost scope), not to the globals where you do the import. y = True a(False): True Should work if you define a in place having same scope as the y assignment b(False): *** name error here *** UIAM it should do this if you import b as above. Regards, Bengt Richter -- http://mail.python.org/mailman/listinfo/python-list
Re: The Greatest News Ever!
R.Meijer wrote: Ron_Grossi_038 at yahoo.com writes: http://www.jcil.blogspot.com The Greatest News Ever! Wow, what a total bullshit (no offense to christians _ ) Personally I find christians, especially this kind rather offense. Now, what I don't understand is what this is doing in a python newsgroup? Its spam. Complian to google. Forward the whole message including headers to [EMAIL PROTECTED] They might end up doing something if enough people complain. Erik -- +---+ Erik de Castro Lopo [EMAIL PROTECTED] (Yes it's valid) +---+ A subversive is anyone who can out-argue their government -- http://mail.python.org/mailman/listinfo/python-list
Once again a unicode question
Hello,
I'm puzzled by this test I made while trying to transform a page in
html to plain text. Because I cannot send unicode to feed, nor str so
how can I do this ?
[EMAIL PROTECTED]:~$ python2.4
.Python 2.4.1c2 (#2, Mar 19 2005, 01:04:19)
.[GCC 3.3.5 (Debian 1:3.3.5-12)] on linux2
.Type help, copyright, credits or license for more information.
. import formatter
. import htmllib
. html2txt = htmllib.HTMLParser(formatter.AbstractFormatter(formatter.DumbWriter()))
. html2txt.feed(u'D\xe9but')
.Traceback (most recent call last):
. File stdin, line 1, in ?
. File /usr/lib/python2.4/sgmllib.py, line 95, in feed
.self.goahead(0)
. File /usr/lib/python2.4/sgmllib.py, line 120, in goahead
.self.handle_data(rawdata[i:j])
. File /usr/lib/python2.4/htmllib.py, line 65, in handle_data
.self.formatter.add_flowing_data(data)
. File /usr/lib/python2.4/formatter.py, line 197, in add_flowing_data
.self.writer.send_flowing_data(data)
. File /usr/lib/python2.4/formatter.py, line 421, in send_flowing_data
.write(word)
.UnicodeEncodeError: 'ascii' codec can't encode character u'\xe9' in position 1: ordinal not in range(128)
. html2txt.feed(u'D\xe9but'.encode('latin1'))
.Traceback (most recent call last):
. File stdin, line 1, in ?
. File /usr/lib/python2.4/sgmllib.py, line 94, in feed
.self.rawdata = self.rawdata + data
.UnicodeDecodeError: 'ascii' codec can't decode byte 0xe9 in position 1: ordinal not in range(128)
. html2txt.feed('Début')
.Traceback (most recent call last):
. File stdin, line 1, in ?
. File /usr/lib/python2.4/sgmllib.py, line 94, in feed
.self.rawdata = self.rawdata + data
.UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 1: ordinal not in range(128)
.
--
(° Nicolas Évrard
/ ) Liège - Belgique
^^
--
http://mail.python.org/mailman/listinfo/python-list
Re: Once again a unicode question
Nicolas Evrard wrote: Hello, I'm puzzled by this test I made while trying to transform a page in html to plain text. Because I cannot send unicode to feed, nor str so how can I do this ? Seems like the parser is in the broken state after the first exception. Feed only binary strings to it. Serge. -- http://mail.python.org/mailman/listinfo/python-list
Re: Grouping code by indentation - feature or ******?
James Stroud [EMAIL PROTECTED] writes: On Friday 25 March 2005 08:39 am, Ivan Van Laningham wrote: Why do we need : at the end of our if and for loops? I spend approximately 6 minutes/100 lines of code going back and finding all of the times I missed :. Is it for cheating? Because newlines are optional statement terminators. Without the ':', the end of the statement would depend on the state of the lexer, which isn't something you want to impose on people. mike -- Mike Meyer [EMAIL PROTECTED] http://www.mired.org/home/mwm/ Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. -- http://mail.python.org/mailman/listinfo/python-list
Re: wxPython Install
| | If I can't install an operating system then put wxPython on it | without jumping through hoops, my probelm will be wxPython. | James Under Debian GNU/Linux installing Python and wxpython using the apt package manager is accomplished via the command lines # apt-get install python2.3 # apt-get install wxpython2.5.3 That's it Worked out of the box here -- Stanley C. Kitching Human Being Phoenix, Arizona -- http://mail.python.org/mailman/listinfo/python-list
Re: character-filtering and Word ( company)
Charles Hartman [EMAIL PROTECTED] writes: I'm working on text-handling programs that want plain-text files as input. It's fine to tell users to feed the programs with plain-text only, but not all users know what this means, even after you explain it, or they forget. So it would be nice to be able to handle gracefully the stuff that MS Word (or any word-processor) puts into a file. Inserting a 0-127 filter is easy but not very friendly. Typically, the w.p. file loads OK (into a wx.StyledTextCtrl a.k.a Scintilla editing pane), and mostly be readable. Just a few characters will be wrong: smart quotation marks and the like. Is there some well-known way to filter or translate this w.p. garbage? I don't know whether encodings are relevant; Bingo. You need to figure out the encoding before you can do intelligent translation of the non-ASCII characters in the text. I don't know what encoding an MSW file uses. Different WPs will use different encodings. Especially when you start working in a cross-platform environment. I don't know that there is a good solution to this problem. It certainly hasn't been sovled on the web. mike -- Mike Meyer [EMAIL PROTECTED] http://www.mired.org/home/mwm/ Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. -- http://mail.python.org/mailman/listinfo/python-list
Re: The Greatest News Ever!
On Saturday 26 March 2005 01:55 pm, Dennis Lee Bieber wrote: On Sat, 26 Mar 2005 17:02:56 + (UTC), R.Meijer [EMAIL PROTECTED] declaimed the following in comp.lang.python: Now, what I don't understand is what this is doing in a python newsgroup? The same thing it was doing in the Ada group... becoming a canned melange of left-over pork products... This thread reminds me of one of my favorite quotes: Faith is like excrement. Both are deeply personal and should be kept to one's self. -Anonymous -- http://mail.python.org/mailman/listinfo/python-list
Re: Dr. Dobb's Python-URL! - weekly Python news and links (Mar 24)
as they got it formed, they elected Whitney Young as the chairman, and who [do] you think became the co-chairman? Stephen Currier, the white man, a millionaire. Powell was talking about it down at the Cobo [Hall] today. This is what he was talking about. Powell knows it happened. Randolph knows it happened. Wilkins knows it happened. King knows it happened. Everyone of that so-called Big Six -- they know what happened. Once they formed it, with the white man over it, he promised them and gave them $800,000 to split up between the Big Six; and told them that after the march was over they'd give them $700,000 more. A million and a half dollars -- split up between leaders that you've been following, going to jail for, crying crocodile tears for. And they're nothing but Frank James and Jesse James and the what-do-you-call-'em brothers. [As] soon as they got the setup organized, the white man made available to them top public relations experts; opened the news media across the country at their disposal; and then they begin [sic] to project these Big Six as the leaders of the march. Originally, they weren't even in the march. You was [sic ] talking this march talk on Hastings Street -- Is Hastings Street still here? -- on Hasting Street. You was [sic] talking the march talk on Lenox Avenue, and out on -- What you call it? -- Fillmore Street, and Central Avenue, an -- http://mail.python.org/mailman/listinfo/python-list
Re: Grouping code by indentation - feature or ******?
On Saturday 26 March 2005 02:52 pm, Mike Meyer wrote: Because newlines are optional statement terminators. Yes; I have accidentally found that ; can be used also as an optional statement terminator--when rewriting some perl code. James -- http://mail.python.org/mailman/listinfo/python-list
Re: Once again a unicode question
* Serge Orlov [23:45 26/03/05 CET]: Nicolas Evrard wrote: Hello, I'm puzzled by this test I made while trying to transform a page in html to plain text. Because I cannot send unicode to feed, nor str so how can I do this ? Seems like the parser is in the broken state after the first exception. Feed only binary strings to it. That was that thank you very much. -- (° Nicolas Évrard / ) Liège - Belgique ^^ -- http://mail.python.org/mailman/listinfo/python-list
Re: ossaudiodev full duplex
In [EMAIL PROTECTED], rjm wrote: [recording the output] Any ideas? Am I doing something fundamentally wrong? Any help would be greatly appreciated. You have to use the mixer to select which channel(s) should be the source of the recording. It's best is to deselect all other sources except the line-in or microphone input because some soundcards can mix several input sources when recording. The `ossaudiodev` module has an `openmixer()` function but it may be easier to use one of the graphical mixer programs like `kmix` or `alsamixergui`. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: character-filtering and Word ( company)
Charles Hartman wrote: I'm working on text-handling programs that want plain-text files as input. It's fine to tell users to feed the programs with plain-text only, but not all users know what this means, even after you explain it, or they forget. So it would be nice to be able to handle gracefully the stuff that MS Word (or any word-processor) puts into a file. Inserting a 0-127 filter is easy but not very friendly. Typically, the w.p. file loads OK (into a wx.StyledTextCtrl a.k.a Scintilla editing pane), and mostly be readable. Just a few characters will be wrong: smart quotation marks and the like. Is there some well-known way to filter or translate this w.p. garbage? I don't know whether encodings are relevant; I don't know what encoding an MSW file uses. I don't see how to use s.translate() because I don't know how to predict what the incoming format will be. Any hints welcome. This may help: http://wvware.sourceforge.net/ [not a recommendation, I've never used it] -- http://mail.python.org/mailman/listinfo/python-list
ANN: pyparsing-1.3 released
I'm happy to announce that 1) pyparsing has been pretty stable for the past 6 months (the last formal release 1.2.2 was last September), and 2) I finally found the time to put together a new release, version 1.3. This release also includes all of the enhancements I posted to CVS last fall as version 1.2.3, but never formally released. Here are some of the major new features and bug-fixes: Version 1.3 - March, 2005 -- - Added new Keyword class, as a special form of Literal. Keywords must be followed by whitespace or other non-keyword characters, to distinguish them from variables or other identifiers that just happen to start with the same characters as a keyword. For instance, the input string containing ifOnlyIfOnly will match a Literal(if) at the beginning and in the middle, but will fail to match a Keyword(if). Keyword(if) will match only strings such as if only or if(only). (Berteun Damman requested this on comp.lang.python - great idea!) - Added setWhitespaceChars() method to override the characters to be skipped as whitespace before matching a particular ParseElement. Also added the class-level method setDefaultWhitespaceChars(), to allow users to override the default set of whitespace characters (space, tab, newline, and return) for all subsequently defined ParseElements. (Inspired by Klaas Hofstra's inquiry on the Sourceforge pyparsing forum.) - Added helper parse actions to support some very common parse action use cases: .. replaceWith(replStr) - replaces the matching tokens with the provided replStr replacement string; especially useful with transformString() .. removeQuotes - removes first and last character from string enclosed in quotes (note - NOT the same as the string strip() method, as only a single quote character is removed at each end) - Added copy() method to ParseElement, to make it easier to define different parse actions for the same basic parse expression. (Note, copy is implicitly called when using setResultsName().) (The following changes were posted to CVS as Version 1.2.3 - October-December, 2004) - Added support for Unicode strings in creating grammar definitions. (Big thanks to Gavin Panella!) - Added constant alphas8bit to include the following 8-bit characters: ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþ - Added srange() function to simplify definition of Word elements, using regexp-like '[A-Za-z0-9]' syntax. This also simplifies referencing common 8-bit characters. - Fixed bug in Dict when a single element Dict was embedded within another Dict. (Thanks Andy Yates for catching this one!) - Added 'formatted' argument to ParseResults.asXML(). If set to False, suppresses insertion of whitespace for pretty-print formatting. Default equals True for backward compatibility. - Added setDebugActions() function to ParserElement, to allow user-defined debugging actions. - Added support for escaped quotes (either in \', \, or doubled quote form) to the predefined expressions for quoted strings. (Thanks, Ero Carrera!) - Minor performance improvement (~5%) converting char in string tests to char in dict. (Suggested by Gavin Panella, cool idea!) You can download pyparsing at http://pyparsing.sourceforge.net. Enjoy! -- Paul McGuire -- http://mail.python.org/mailman/listinfo/python-list
Re: html tags and python
select option name = 1 value=1January option name = 2 value=2February option name = 3 value=3March option name = 4 value=4April option name = 5 value=5May option name = 6 value=6June option name = 7 value=7July option name = 8 value=8August option name = 9 value=9September option name = 10 value=10October option name = 11 value=11November option name = 12 value=12December /select The thing is: I also want the user to choose a date I will make this with another dropdownbox. But if the first month is selected, then there should be 31 days in the days dropdownbox, if the second month is selected there should be 28 days in the dropdownbow. Python is great, but I'd suggest trying this with JavaScript and the DOM (Document Object Model). In fact you may be able to Google-up a JavaScript script that does what you want. JavaScript executes on the client machine, which is perfect for that aspect of your application. The general idea would be to have the script redefine the option values for days upon selection of the year and month. The DOM lets you access those options at run time very easily. JavaScript is not as robust a programming language as Python, but it is handy for executing certain functionality within a browser interface, and because it works within the browser and can access the DOM, there is an element of instant gratification. Then... about the time you start to try to build a real application with JavaScript, it will start to drive you mad... and you will have a new, greater affection for Python. -- http://mail.python.org/mailman/listinfo/python-list
Re: html tags and python
On Sat, 26 Mar 2005 18:07:01 -0800, EP wrote:
Then... about the time you start to try to build a real application with
JavaScript, it will start to drive you mad... and you will have a new,
greater affection for Python.
Actually, if you dig into it really hard, it's not bad. In fact of all the
languages I know, Javascript is probably the closest to Python circa 1.5.2
that I can think of. Not identical, and it doesn't have *any* of the later
nice things in Python (metaclasses, descriptors, list comprehensions,
etc.), the OO can be clumsy (though it is fairly functional), and there
are inconveniences that I really wish I could make go away, but it's not
too bad.
(The worst being that
for (var something in someArray) {}
gives you the *indices* of the array, not the values, so the next line is
almost always
var theActualStinkingValue = someArray[something];
.)
The DOM is clumsy, but for any given browser not to bad. The *differences*
in the DOMs from browser to browser are what kill you. And of course, no
real libraries.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Turn of globals in a function?
On Sat, 26 Mar 2005 12:18:39 -0800, Michael Spencer
[EMAIL PROTECTED] wrote:
Ron_Adam wrote:
Is there a way to hide global names from a function or class?
I want to be sure that a function doesn't use any global variables by
mistake. So hiding them would force a name error in the case that I
omit an initialization step. This might be a good way to quickly
catch some hard to find, but easy to fix, errors in large code blocks.
Examples:
def a(x):
# ...
x = y # x is assigned to global y unintentionally.
# ...
return x
def b(x):
# hide globals somehow
# ...
x = y# Cause a name error
# ...
return x
y = True
a(False):
True
b(False):
*** name error here ***
Ron_Adam
For testing, you could simply execute the function in an empty dict:
a = I'm a
def test():
... print a
...
test()
I'm a
exec test.func_code in {}
Traceback (most recent call last):
File input, line 1, in ?
File input, line 2, in test
NameError: global name 'a' is not defined
I didn't know you could do that. Interesting. :)
I was hoping for something in line that could use with an assert
statement. But this is good too, I'll have to play around with it a
bit. Thanks.
Ron
This would get more complicated when you wanted to test calling with
parameters,
so with a little more effort, you can create a new function where the globals
binding is to an empty dict:
from types import FunctionType as function
testtest = function(test.func_code, {})
testtest()
Traceback (most recent call last):
File input, line 1, in ?
File input, line 2, in test
NameError: global name 'a' is not defined
HTH
Michael
--
http://mail.python.org/mailman/listinfo/python-list
Re: Python slogan, was Re: Grouping code by indentation - feature or ******?
Peter Otten wrote: Skip Montanaro wrote: Or, paraphrasing Mark Twain, Python is the worst possible programming language, except for all the others. Google thinks it's Winston Churchill as well. I did come across a quote wiki: http://www.wikiquote.org/ Wikiquote is nice. I missed it because I googled for Mark Twain and parts of the Churchill quote -- for that I'm now convinced it is as wikiquote gives a slightly longer excerpt and the date and location of the speech (November 11, 1947, in the House of Commons). Interesting that in the quote on wikiquote, Churchill indicates that the sentiment is not original with him: Indeed, it has been said that democracy is the worst form of government except all those other forms that have been tried from time to time. Note the it has been said... Kent -- http://mail.python.org/mailman/listinfo/python-list
Re: ossaudiodev full duplex
Thanks that was helpful. The mixer seems werid though. I tested first with the alsamixer and the only way I can get the line-in in to record is to put the mix channel into capture mode. However, doing that mixes all the record sources together so I get the orginal sound that is played through the output on the Wave channel recorded as well. If I don't select the mix channel for capture I still get the wave channel in the record but I don't get the line-in channel anymore. Thanks again for your help at least it set me in the right direction for things to look for. -richie Marc 'BlackJack' Rintsch wrote: In [EMAIL PROTECTED], rjm wrote: [recording the output] Any ideas? Am I doing something fundamentally wrong? Any help would be greatly appreciated. You have to use the mixer to select which channel(s) should be the source of the recording. It's best is to deselect all other sources except the line-in or microphone input because some soundcards can mix several input sources when recording. The `ossaudiodev` module has an `openmixer()` function but it may be easier to use one of the graphical mixer programs like `kmix` or `alsamixergui`. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: Turn off globals in a function?
If you put the above def b in e.g. a_module.py, and do a (untested ;-) from a_module import b instead of defining it locally, then the global references from b (and whatever else you import from a_module) should be to the global dict defined for a_module (i.e., its outermost scope), not to the globals where you do the import. y = True a(False): True Should work if you define a in place having same scope as the y assignment b(False): *** name error here *** UIAM it should do this if you import b as above. Regards, Bengt Richter Good suggestion. Thanks. I was somewhat aware of the modular scope, but was looking for way to apply it on a more local level. Michael's suggestion looks interesting for that. Ron_Adam -- http://mail.python.org/mailman/listinfo/python-list
Re: Suggesting a new feature - Inverse Generators -- tangential topic
The ability to have 'full coroutines', or at least more 'coroutiney behaviour' than is provided by generators alone, was I think what I was Jordan, This is somewhat off-topic, but perhaps you might be interested in taking a look at the Lua language (http://www.lua.org/). It supports coroutines, and is similar to Python in that it is a dynamically typed language with support for a nice associative dictionary-like data structure. It doesn't cover the same solution space that Python does, but it is an interesting language to play with. Phil Schmidt -- http://mail.python.org/mailman/listinfo/python-list
Re: Why tuple with one item is no tuple
Antoon Pardon wrote: snip So python choose a non-deterministic direction. To me (2,3) + (4,5) equals (6,8). I don't dispute that having an operator to combine (2,3) and (4,5) in (2,3,4,5) is usefull, but they should never have used the + for that. (alph, bravo) + (delta, max) -- (alphdelta, bravomax) As we say in Australia, What The . Joal -- http://mail.python.org/mailman/listinfo/python-list
Re: Python for a 10-14 years old?
Simon Brunning wrote: On 23 Mar 2005 21:03:04 -0800, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Is there something out there like Python for kids which would explain *basic* programming concepts in a way which is accessible and entertaining for kids aged 10-14 (that about where her brain is right now) and which would allow them to play around and have fun solving small problems? I don't know about kid's tutorials, but I can recommend that you try the turtle module. It's great for kids. It gives really good immediate feedback, You can start out using it interactively: snip Couldn't help myself. I had to write the Dragon Fractal in python.turtle :) Generates the L-System for the Dragon Fractal, using the turtle module. import re, turtle from math import sin, pi The default L-System rules for the dragon fractal are: Angle 45 degrees Starting Axiom FX F = Y = +FX--FY+ X = -FX++FY- I've optimised them a little bit the following ways: Take out all occurances of F. Replace Y with +FN--FY+ Replace X with -FX++FY- Replace N with X Take out all occurances of -+ Take out all occurances of +- def rules(instring): I originally had this as a series of nested re.sub expressions. Once the rule list got long though, I split it up to make it more pythonic. newstring, subs = re.subn(F, , instring) # Use N as a placeholder for X newstring, subs = re.subn(Y, +FN--FY+, newstring) # So that we don't get double substitution. newstring, subs = re.subn(X, -FX++FY-, newstring) # Now we replace the placeholder with X newstring, subs = re.subn(N, X, newstring) # And optimise the string in regard to left/right turns. subs = 1 while subs: newstring, first = re.subn(-\+, , newstring) newstring, second = re.subn(\+-, , newstring) subs = first + second return newstring def colorator(value): # Makes the colour of the cursor cycle. range, fract = divmod(value*6, 1) if range == 0: red = 1.0 green = fract blue = 0.0 elif range == 1: red = 1.0 - fract green = 1.0 blue = 0.0 elif range == 2: red = 0.0 green = 1.0 blue = fract elif range == 3: red = 0.0 green = 1.0 - fract blue = 1.0 elif range == 4: red = fract green = 0.0 blue = 1.0 elif range = 5: red = 1.0 green = 0.0 blue = 1.0 - fract return red, green, blue # The default is that the turtle will only move one pixel def parser(parsestring, distance=1, angle=45): # First we clean up the parsestring newstring = re.sub(X, , parsestring) newstring = re.sub(Y, , newstring) # Clear the screen turtle.clear() strlen = len(newstring) colorinc = 1.0 / float(strlen) turtle.color(colorator(0)) for i in range(strlen): value = newstring[i] turtle.color(colorator(float(i) * colorinc)) if value == +: turtle.right(angle) elif value == -: turtle.left(angle) elif value == F: turtle.forward(distance) # Hide the cursor turtle.color(1.0,1.0,1.0) def run(count=15, distance=1, angle=45, width=1): string = FX while count 0: string = rules(string) count -= 1 # Hide the cursor while we are moving it. ##print string turtle.width(width) turtle.color(1.0,1.0,1.0) # Move the cursor so the turtle won't go off the screen. # You might want to resize the turtle screen while the program is doing this turtle.setx(100) turtle.sety(-200) parser(string, distance=distance, angle=angle) if __name__ == __main__: run(15) -- http://mail.python.org/mailman/listinfo/python-list
Re: Python slogan, was Re: Grouping code by indentation - feature or ******?
Kent Johnson wrote: Interesting that in the quote on wikiquote, Churchill indicates that the sentiment is not original with him: Indeed, it has been said that democracy is the worst form of government except all those other forms that have been tried from time to time. Note the it has been said... Back to square one then. When will I ever learn to read... Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: Turn of globals in a function?
Ron_Adam [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED]...
Is there a way to hide global names from a function or class?
I want to be sure that a function doesn't use any global variables by
mistake. So hiding them would force a name error in the case that I
omit an initialization step. This might be a good way to quickly
catch some hard to find, but easy to fix, errors in large code blocks.
def noglobals(f):
. import new
. return new.function(
. f.func_code,
. {'__builtins__':__builtins__},
. f.func_name,
. f.func_defaults,
. f.func_closure
. )
You can use it with the Python 2.4 @decorator syntax:
@noglobals
def a(...):
. # code here
Doing this for a class is a little more work. You will need dig inside
to perform this treatment on each method separately and handle new and
old-style classes a bit differently.
Note that this kind of function may declare globals. They will be
persistent but private to the function.
Oren
--
http://mail.python.org/mailman/listinfo/python-list
Re: Suggesting a new feature - Inverse Generators
Jordan Rastrick [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED]... Hmmm, I like the terminology consumers better than acceptors. Here's an implementation of Python consumers using generators: http://groups.google.co.uk/[EMAIL PROTECTED] Oren -- http://mail.python.org/mailman/listinfo/python-list
Re: Grouping code by indentation - feature or ******?
On Sat, 26 Mar 2005 10:02:13 +0100, Javier Bezos wrote: Tim Tyler [EMAIL PROTECTED] escribió en el mensaje news:[EMAIL PROTECTED] What do you guys think about Python's grouping of code via indentation? Is it good - perhaps because it saves space and eliminates keypresses? Or is it bad - perhaps because it makes program flow dependent on invisible, and unpronouncable characters - and results in more manual alignment issues by preventing code formatters from managing indentation? I particularly hate it, but Python has lots of good things which compesate that (another annoying point of Python are slices -- mine are always off by 1). I always write explicitly ends as #end, so that I can reorganice the code easily if necessary. Maybe in the future, when Ruby matures, I could change my mind, but currently Python is still my favourite scripting language (as formerly was Tcl). About slices: I agree that Python's slice boundaries (some_list[a:b] being all elements with a = index b) are counterintuitive at first. But this method does satisfy some handy properties, the first of which being: l[:n] + l[n:] = l Secondly, the range() function behaves identically to slices, meaning that for i in range(10): will iterate 10 times, and for i in range(len(l)): will iterate over the indices of the sequence l. If you had l[a:b] be inclusive on both a and b (instead of inclusive on a and exclusive on b), you would have to be adding and subtracting one in all of these examples, leading that much more easily to off-by-one errors. A digression: my data structures teacher (in c++) has a vector class that allows you to set upper and lower bounds, and he combines this with for loops that usually start at one but don't always. I doubt he was trying to get this point across, but the lesson I've learned is to always start at zero and count to less than the length of the list (in c, the idiom is for (i = 0; i length; i++)). Believe me that any other way will only lead to trouble! :-) -- Jacob Lee [EMAIL PROTECTED] | www.nearestneighbor.net -- http://mail.python.org/mailman/listinfo/python-list
Re: regular expression
Aaron - Here's a pyparsing approach (requires latest 1.3 pyparsing version). It may not be as terse or fast as your regexp, but it may be easier to maintain. By defining floatNum ahead of DOT in the scanner definition, you specify the dot-containing expressions that you do *not* want to have dots converted to colons. -- Paul === from pyparsing import Word,Literal,replaceWith, Combine, nums DOT = Literal(.).setParseAction( replaceWith(:) ) floatNum = Combine( Word(nums) + . + Word(nums) ) scanner = floatNum | DOT testdata = '375 mi. south of U.C.B is 3.4 degrees warmer. print scanner.transformString( testdata ) === prints out: '375 mi: south of U:C:B is 3.4 degrees warmer: -- http://mail.python.org/mailman/listinfo/python-list
[ python-Bugs-853411 ] After fork in subthread, signals are blocked
Bugs item #853411, was opened at 2003-12-03 16:55 Message generated for change (Comment added) made by mwh You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=853411group_id=5470 Category: Threads Group: Python 2.2.3 Status: Closed Resolution: Fixed Priority: 5 Submitted By: Göran Uddeborg (goeran) Assigned to: Nobody/Anonymous (nobody) Summary: After fork in subthread, signals are blocked Initial Comment: When a Python program starts a new thread, and this new thread forks, the forked process ingores signals. It will not terminate, or dump core if that would be applicable, when it receives a signal. I attach a test case which illustrates the behaviour. In this example, the child process is sent a SEGV signal from the subthread of the parent process. This should cause the child process to die and produce a core. But execution of the parent program threads finishes, there is still a python process around, continuing to sleep. Apparently, Python subthreads blocks signals. On Linux, /proc/*/status for subthreads includes the line SigBlk: 7ffbfeff The Python documentation says one should only install signal handlers in the main thread, and only the main thread will recieve signals. So this makes sense. But when the subthread forks, the new process inherits this signal mask, which seems to be incorrect behaviour. I would assume, if Python sets this signal mask for threads, it should also reset it again after a fork. I've seen this on these two platforms: Python 2.2.3 on Red Hat Linux RHEL 3WS (IA32) Python 2.2.1 on Sun Solaris 8 (Sparc) -- Comment By: Michael Hudson (mwh) Date: 2005-03-26 10:41 Message: Logged In: YES user_id=6656 Good. Closing. -- Comment By: Erik Osheim (moculus) Date: 2005-03-21 05:07 Message: Logged In: YES user_id=542811 I can confirm that on my install of 2.4, I no longer get this problem. -- Comment By: Michael Hudson (mwh) Date: 2005-03-18 08:59 Message: Logged In: YES user_id=6656 I think this should be fixed in Python 2.4. -- Comment By: Erik Osheim (moculus) Date: 2005-03-18 03:45 Message: Logged In: YES user_id=542811 This bug is still around. I have been experiencing it firsthand: if I write a simple program with one parent and one child thread and run rsync in the parent thread (via os.system), all is well. In the child thread it hangs indefinitely. After putting a bunch of debugging into rsync, I discovered that a USR2 signal was getting sent but never received, and rsyncs parent thread was waiting for the child to exit, and that the child was sleeping (having not gotten the signal). Is there any clue as to why this happens? This has been widely observed on Linux 2.6.* (this particular case affects Gentoo). -- Comment By: gmanipon (pymonger) Date: 2004-12-06 21:24 Message: Logged In: YES user_id=1173063 Sorry for the bother. Was there any resolution to this bug report? -- Comment By: Jack Jansen (jackjansen) Date: 2004-01-26 10:02 Message: Logged In: YES user_id=45365 I have absolutely no idea where the bug could be, someone better versed in the threading ideosyncracies of the various platforms needs to look at this, but I do want to point at hairy_flange's comment that fink-python 2.2.3 on OSX does *not* exhibit the bug (while on other platforms it does). It may be worthwhile to download a fink-python in source form, and see whether they do any configure magic. -- Comment By: Steve Muir (hairy_flange) Date: 2004-01-26 04:04 Message: Logged In: YES user_id=960132 I just submitted a bug report that is a duplicate of this bug (apologies!), I observed the same behaviour with the Python shipped with Mac OS X (Python 2.3), and Python 2.2.2 on RedHat/x86, but Fink Python 2.2.3 for OS X does not have this bug. -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=853411group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1171023 ] Thread.join() fails to release Lock on KeyboardInterrupt
Bugs item #1171023, was opened at 2005-03-26 09:40 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1171023group_id=5470 Category: Threads Group: Python 2.4 Status: Open Resolution: None Priority: 5 Submitted By: Peter Hansen (phansen) Assigned to: Nobody/Anonymous (nobody) Summary: Thread.join() fails to release Lock on KeyboardInterrupt Initial Comment: In threading.Thread.join(), the Condition/Lock object called self.__block is acquired upon entry, and released on exit without an enclosing try/finally to ensure that the release really occurs. If the join() call has no timeout, the wait() call that occurs inside can never be interrupted so there is no problem. If the join() call has a timeout, however, the wait() occurs in a loop which can be interrupted by a Ctrl-C, raising a KeyboardInterrupt which skips the self.__block.release() call and leaves the Lock acquired. This is a problem if the main thread (which is the only one that will see a KeyboardInterrupt) is the one calling join() and only if the other thread on which the join() is being called is a non-daemon thread or, in the case of a daemon thread, if the main thread subsequently attempts to wait for the other thread to terminate (for example, by monitoring isAlive() on the other thread). In any event, the lack of a try/finally means the joined thread will never really finish because any attempt by it to call its __stop() method will block forever. -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1171023group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1170766 ] weakref.proxy incorrect behaviour
Bugs item #1170766, was opened at 2005-03-25 21:54 Message generated for change (Comment added) made by arigo You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1170766group_id=5470 Category: Python Library Group: Python 2.4 Status: Open Resolution: None Priority: 5 Submitted By: Alexander Kozlovsky (kozlovsky) Assigned to: Nobody/Anonymous (nobody) Summary: weakref.proxy incorrect behaviour Initial Comment: According documentation, proxy in most contexts must have the same behaviour as object itself. PROBLEM: bool(proxy_object) != bool(object_itself) EXAMPLE: class X(list): pass # collection class ... x = X() # empty collection import weakref proxy = weakref.proxy(x) bool(x) False bool(proxy) True PYTHON VERSION: 2.4 (#60, Nov 30 2004, 11:49:19) [MSC v.1310 32 bit (Intel)] also tested on: 2.3.4 (#53, May 25 2004, 21:17:02) [MSC v.1200 32 bit (Intel)] -- Comment By: Armin Rigo (arigo) Date: 2005-03-26 14:50 Message: Logged In: YES user_id=4771 The bug is in weakrefobject:proxy_nonzero(), which calls the underlying object's nb_nonzero slot instead of going through the general PyObject_IsTrue() mecanism. Built-in types like list and dict don't have a nb_nonzero slot. As a related bug, (Callable)ProxyType should implement tp_richcompare in addition to tp_compare. In fact, we should review the code to check if ProxyType knows about the most recent type slots... -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1170766group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[ python-Bugs-1167930 ] threading.Thread.join() cannot be interrupted by a Ctrl-C
Bugs item #1167930, was opened at 2005-03-21 17:19 Message generated for change (Comment added) made by phansen You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1167930group_id=5470 Category: Threads Group: Feature Request Status: Open Resolution: None Priority: 5 Submitted By: Nicholas Veeser (nveeser) Assigned to: Nobody/Anonymous (nobody) Summary: threading.Thread.join() cannot be interrupted by a Ctrl-C Initial Comment: I write a python program that that starts several threads and then waits on them all. If I use join() to wait on the threads, there is no way to Stop the process with Ctrl-C. Threading.Thread.join() uses a lock (thread.allocate_lock()) to put itself on the wait_queue.It then calls thread.Lock.acquire(), which blocks indefinitely. Lock.acquire() (at least in POSIX) seems to work in such a way as to ignore any signals. (both semaphore and condition variable type). PyThread_acquire_lock() will not return until the lock is acquired, even if a signal is sent. Effectively, Ctrl-C is masked until the lock is released, (the joined thread is done), and the main thread comes back to the interpreter and handles the signal, producing a KeyboardInterrupt Exception. But not before the lock is released, which is once the thread is finished, which is too late if you want to kill the main thread and have it gracefully stop its child threads. So the main thread has no way to call, join() and still respond to Ctrl-C in some way. One solution could be to change threading.Thread.join() to use other methods of synchronization which respond to Ctrl-C more effectively. Another solution would be to have Lock.acquire() throw a KeyboardInterruped exception like other system calls. This IHMO would make the python objects behave more like Java, which requires catching the InterruptedException, giving the developer more control over how to handle this case. -- Comment By: Peter Hansen (phansen) Date: 2005-03-26 09:59 Message: Logged In: YES user_id=567267 Coincidentally this issue came up in a thread in comp.lang.python just now. See tim one's reply at http://groups.google.ca/groups?selm=mailman.884.815188.1799.python-list%40python.org which indicates that it's simply not possible for Ctrl+C to interrupt a mutex acquire. A workaround is to be sure to call join() with a timeout value, inside a loop if you absolutely need an indefinite timeout, but that won't necessarily work because of a different problem which I just reported as bug 1171023. There's a workaround for that problem too though, provided you can subclass threading.Thread: provide your own join() which wraps the builtin one and which attempts to release the lock safely. I'll attach an example if I can figure out how... there's no option to do so on this particular page in Sourceforge. :-( -- You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=105470aid=1167930group_id=5470 ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
