Re: while c = f.read(1)
Op 2005-08-24, Magnus Lycka schreef <[EMAIL PROTECTED]>: > Antoon Pardon wrote: >> I think he did, because both expression are not equivallent >> unless some implicite constraints make them so. Values where >> both expressions differ are: >> >> start1=67, stop1=9, start2=10, stop2=29 > > Ouch! That didn't occur to me. How sloppy to just assume that > time periods can't end before they start. I have no trouble that you assume a time period starts before it ends. But two pieces of code that only give the same result under particular assumptions are not equivallent. For all I know his code might work without this assumption and thus be usefull in circumstances where yours is not. Maybe someone uses a convention where time intervals that stop before they start can have some meaning. Equivallent code IMO always gives the same results, not only under the particular constraints you are working with. > I'll shut up now. You win, > I'm obviously the idiot here, and Python's must be > redesigned from ground up. Pyrdon maybe? If I ever design a language it'll be called: 'Queny' -- Antoon Pardon -- http://mail.python.org/mailman/listinfo/python-list
Re: Should I move to Amsterdam?
Thank you for your praise of my little country, but depending on your definition, the Netherlands might not be as civil as you assume. A lot of my foreign collegues commplain about how rude the dutch can be. Countries like sweden or japan seem to have much better manners. As to which countries have been civilized for the longest time, the Netherlands wouldn't rank very high there either, China, Greece or Egypt have been civilized much longer. I do think however that New york should have it's name reverted to New Amsterdam ;-) >>>Tom Anderson <[EMAIL PROTECTED]> 08/24/05 6:49 pm >>> On Wed, 24 Aug 2005, Armin Steinhoff wrote: >Adriaan Renting wrote: > >"Wade" <[EMAIL PROTECTED]> 08/24/05 2:31 pm >>> >> >>http://www.slate.com/id/2124561/entry/2124562/ Nice little series by >>Seth Stevenson for Americans daydreaming about emigration. Somewhere, >>anywhere ... maybe Amsterdam? I've never been to the Netherlands >>myself, but it sounds very civilized. > >What a joke ... Amsterdam is 'civilized' since several hundreds of years >:) Indeed. Perhaps we should rename it Old New York to reinforce the point :). But yes, the Netherlands is a highly civilised country - up there with Denmark and Canada, and above the UK, France or Germany, IMNERHO. I'm not going to bother comparing it to the US! tom -- This should be on ox.boring, shouldn't it? -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Command Line arguments
michael <[EMAIL PROTECTED]> wrote: >I have a question about Windows based python (2.4 and later). > >For example, if I make a script called test.py like so: > >import sys >print sys.argv > >then run it: > >python test.py this is a test > >I see a list with > >['test.py', 'this', 'is', 'a', 'test'] > > >All is good! > >BUT... > >If i make .py extensions be run as exes (by setting the .py extension to >be executable with PATHEXT setting in environment variables, the Python >program will run, but NO arguments are passed! > >For example, after setting .py extension to be executable, i get this: > >test this is a test > >I get ['test.py]. NO arguments are passed. > >NOTE: This can NOT be blamed on Windows in my mind because Python2.2 and >earlier works FINE. It is a configuration problem. Bring up a Command Shell and run the assoc and ftype commands like this: C:\Tmp>assoc .py .py=Python.File C:\Tmp>ftype Python.File Python.File="C:\Apps\Python24\python.exe" "%1" %* C:\Tmp> The KEY part of that is the %* at the end of the Python.File defintion. That tells the system to insert the rest of the command line parameters at that point. If you have ONLY the "%1", the command will run but no parameters will be forwarded. If so, you can fix this by typing: C:\Tmp>ftype Python.File="C:\Apps\Python24\python.exe" "%1" %* Substituting your own path, of course. -- - Tim Roberts, [EMAIL PROTECTED] Providenza & Boekelheide, Inc. -- http://mail.python.org/mailman/listinfo/python-list
same menu point is activated
Hi all Im trying to learn wxpython by some samples and Ive come across this. After change EVT_MENU lines from EVT_MENU(self, ID_OPEN, self.OnOpen) to self.Bind(wx.EVT_MENU, self.OnOpen) It can run, but the menu points all trigger the openfile dialog. Seems like the last bind rules them all. What am i doing wrong? All the best OllieZ Code below import wx import os ID_ABOUT=101 ID_OPEN=102 ID_BUTTON1=110 ID_EXIT=200 class MainWindow(wx.Frame): def __init__(self,parent,id,title): self.dirname='' wx.Frame.__init__(self,parent,wx.ID_ANY, title, style=wx.DEFAULT_FRAME_STYLE| wx.NO_FULL_REPAINT_ON_RESIZE) self.control = wx.TextCtrl(self, 1, style=wx.TE_MULTILINE) self.CreateStatusBar() # A Statusbar in the bottom of the window # Setting up the menu. filemenu= wx.Menu() filemenu.Append(ID_OPEN, "&Open"," Open a file to edit") filemenu.AppendSeparator() filemenu.Append(ID_ABOUT, "&About"," Information about this program") filemenu.AppendSeparator() filemenu.Append(ID_EXIT,"&Exit"," Terminate the program") # Creating the menubar. menuBar = wx.MenuBar() menuBar.Append(filemenu,"&File") # Adding the "filemenu" to the MenuBar self.SetMenuBar(menuBar) # Adding the MenuBar to the Frame content. self.Bind(wx.EVT_MENU, self.OnAbout) self.Bind(wx.EVT_MENU, self.OnExit) self.Bind(wx.EVT_MENU, self.OnOpen) # EVT_MENU(self, ID_OPEN, self.OnOpen) self.sizer2 = wx.BoxSizer(wx.HORIZONTAL) self.buttons=[] for i in range(0,6): self.buttons.append(wx.Button(self, ID_BUTTON1+i, "Button &"+`i`)) self.sizer2.Add(self.buttons[i],1,wx.EXPAND) # Use some sizers to see layout options self.sizer=wx.BoxSizer(wx.VERTICAL) self.sizer.Add(self.control,1,wx.EXPAND) self.sizer.Add(self.sizer2,0,wx.EXPAND) #Layout sizers self.SetSizer(self.sizer) self.SetAutoLayout(1) self.sizer.Fit(self) self.Show(1) def OnAbout(self,e): d = wx.MessageDialog( self, " A sample editor \n" " in wxPython","About Sample Editor", wx.OK) # Create a message dialog box d.ShowModal() # Shows it d.Destroy() # finally destroy it when finished. def OnExit(self,e): self.Close(True) # Close the frame. def OnOpen(self,e): """ Open a file""" dlg = wx.FileDialog(self, "Choose a file", self.dirname, "", "*.*", wx.OPEN) if dlg.ShowModal() == wx.ID_OK: self.filename=dlg.GetFilename() self.dirname=dlg.GetDirectory() f=open(os.path.join(self.dirname, self.filename),'r') self.control.SetValue(f.read()) f.close() dlg.Destroy() app = wx.PySimpleApp() frame = MainWindow(None, -1, "Sample editor") app.MainLoop() -- http://mail.python.org/mailman/listinfo/python-list
Re: Jargons of Info Tech industry
Mike Schilling wrote: > "Mike Meyer" <[EMAIL PROTECTED]> wrote in message >> "Mike Schilling" <[EMAIL PROTECTED]> writes: >>> "l v" <[EMAIL PROTECTED]> wrote in message Xah Lee wrote: > (circa 1996), and email should be text only (anti-MIME, circa 1995), I think e-mail should be text only. I have both my email and news readers set to display in plain text only. It prevents the marketeers and spammers from obtaining feedback that my email address is valid. A surprising amount of information can be obtained from your computer by allowing HTML and all of it's baggage when executing on your computer. Phishing comes to my mind first and it works because people click the link without looking to see where the link really takes them. >>> >>> A formatting-only subset of HTML would be useful for both e-mail >>> and Usenet posts. >> >> Used to be people who wanted to send formatted text via email >> would use rich text. It never really caught on. But given that >> most of the people sending around formatted text are using >> point-n-click GUIs to create the stuff, the main advantage of >> HTML - that it's easy to write by hand - isn't needed. > > But the other advantage, that it's an existing and popular > standard, remains. However, for both e-mail and news, it is totally useless. It also interferes with the use of AsciiArt, while opening the recipient to the dangers above. -- "If you want to post a followup via groups.google.com, don't use the broken "Reply" link at the bottom of the article. Click on "show options" at the top of the article, then click on the "Reply" at the bottom of the article headers." - Keith Thompson -- http://mail.python.org/mailman/listinfo/python-list
Setting the encoding in pysqlite2
An easy question, but I don't find the answer in the docs :-(
I have a sqlite3 database containing accented characters (latin-1).
How do I set the right encoding? For instance if I do this:
#-*- encoding: latin-1 -*-
from pysqlite2 import dbapi2 as sqlite
import os
DBFILE="/tmp/example.db"
def writedb(conn):
c = conn.cursor()
c.executescript("""
create table example (word char(20));
insert into example values ("così");
""")
c.close()
def readdb(conn):
c = conn.cursor()
c.execute("select * from example;")
#print c.fetchall()
c.close()
if __name__ == "__main__":
conn = sqlite.connect(DBFILE)
writedb(conn)
readdb(conn)
conn.close()
os.remove(DBFILE)
I get UnicodeDecodeError: 'utf8' codec can't decode byte 0xec in
position 3: unexpected end of data
(notice, even if the 'print' statement is commented.
Michele Simionato
--
http://mail.python.org/mailman/listinfo/python-list
Re: Externally-defined properties?
Well, I have used factories of properties external to the class many times, and they work pretty well. Michele Simionato -- http://mail.python.org/mailman/listinfo/python-list
Re: Setting the encoding in pysqlite2
Michele Simionato ha scritto:
> An easy question, but I don't find the answer in the docs :-(
> I have a sqlite3 database containing accented characters (latin-1).
> How do I set the right encoding? For instance if I do this:
>
Hi,
i usually use this "string" method:
encode([encoding[,errors]])
An example:
cur.execute("""
insert into tab(
field1,
field2)
values (?,?)
""" , (myvar1.encode('utf8'),\
myvar2.encode('utf8')))
Bye,
Renzo
--
http://mail.python.org/mailman/listinfo/python-list
Re: Should I move to Amsterdam?
>But yes, the Netherlands is a highly civilised country - up there with >Denmark and Canada, and above the UK, France or Germany, IMNERHO. I'm not >going to bother comparing it to the US! > > How strange that you put Canada so high on your list. -- http://mail.python.org/mailman/listinfo/python-list
How to start PEP process?
Should I just put a "Proposed PEP" message here? Or is there a more formal way? Thanks, Ken -- http://mail.python.org/mailman/listinfo/python-list
Re: Email client in Pyhton
Thanks micheal, for help. I think this could solve most of problem. -- K Naren,MeTel Team. http://www.midascomm.com/ -- http://mail.python.org/mailman/listinfo/python-list
How to start a DTS Package on MS-SQL-Server?
I found this subject line in a post to this list on Jan 30, 2004. Does anybody know if this is possible? Thanks. -- http://mail.python.org/mailman/listinfo/python-list
Re: pipes like perl
many thanks to all the fellows who cared to answer! bye max -- http://mail.python.org/mailman/listinfo/python-list
overload builtin operator
Hi, I'm trying to overload the divide operator in python for basic arithmetic. eg. 10/2 ... no classes involved. I am attempting to redefine operator.__div__ as follows: # my divide function def safediv(a,b): return ... # reassign buildin __div__ import operator operator.__div__ = safediv The operator.__dict__ seems to be updated OK but the '/' operator still calls buildin __div__ Does anyone know if this is possible and if I'm going along the correct path with my attempts above? Is it possible to do this using a C extention? Regards, Shaun. -- http://mail.python.org/mailman/listinfo/python-list
Re: loop in python
Hi all, > What you are "comparing" is either IO times (the "print loop" program), > where Perl beats C - which means that Perl's IO have been written at a > very low level instead of relying on the stdlib's IO - i'd like to know what aspects are really coded in very low level for python ? regards, KM -- http://mail.python.org/mailman/listinfo/python-list
newbie question: convert a list to one string
H! I'm searching for the fastest way to convert a list to one big string. For example: test = ['test','test2','test3'] print unlist(test) > test test2 test3 (string) I know I can make a loop like below but is that the fastest/best option ? def unlist(test): output='' for v in test: output = output+" "+v return output Thanks for helping, GC-Martijn -- http://mail.python.org/mailman/listinfo/python-list
Get datatype of a column
Hi does anyone know how to get a column type from a database using jdbc and python? thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: How to start PEP process?
Kenneth McDonald wrote: > Should I just put a "Proposed PEP" message here? Or is there a more > formal way? See PEP 1. Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: How to start PEP process?
Kenneth McDonald wrote: > Should I just put a "Proposed PEP" message here? "Proposed Python Enhancement Proposal"? A bit redundant, don't you think? :-) I think "pre-PEP" is the usual term. > Or is there a more > formal way? Not until you get to the post-pre-PEP stage. By all means, please do post it here and get some feedback before formally submitting it. -- Robert Kern [EMAIL PROTECTED] "In the fields of hell where the grass grows high Are the graves of dreams allowed to die." -- Richard Harter -- http://mail.python.org/mailman/listinfo/python-list
wanna stop by my homemade glory hole?
my husband is installing an extra bathroom poolside. there is a perfect size hole (unless you have a huge cock) to stick your dick through into the adjoing room. come around the side of my house(perfect if you look like a repair man) enter into the unfisnished bathroom and I'll service you from the other side. you can leave when your done, no talking or small talk. i want to do this before the hole gets patched up. its been a huge fantasy of mine ever since I've seen a glory hole online. you can email me for a time convienient for you. im home all-day most days so my schedule is open. do you prefer a certain color of lipstick? check out my pic and email here under kallegirl26 www.no-strings-fun.net/kallegirl26 ready and waiting, me ;o) -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie question: convert a list to one string
[EMAIL PROTECTED] wrote: > H! > > I'm searching for the fastest way to convert a list to one big string. > > For example: > test = ['test','test2','test3'] > > print unlist(test) > >>test test2 test3 (string) > > > > I know I can make a loop like below but is that the fastest/best option > ? > > def unlist(test): > output='' > for v in test: > output = output+" "+v > return output ' '.join(test) -- Robert Kern [EMAIL PROTECTED] "In the fields of hell where the grass grows high Are the graves of dreams allowed to die." -- Richard Harter -- http://mail.python.org/mailman/listinfo/python-list
Re: Doubt C and Python
Grant Edwards wrote: > On 2005-08-23, praba kar <[EMAIL PROTECTED]> wrote: > > What why it is more efficient. Kindly let me > > know with some details. > > Have you read _any_ of the thread? A number of people have > already explained in detail why programming in Pything is more > efficient. Please read the responses you've already gotten. Grant, Going by the Google Groups timestamps that I see, there's a good chance that none of the other responses were visible to the OP when the above followup was posted. -- Ben Sizer -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie question: convert a list to one string
Thanks that's what i need. -- http://mail.python.org/mailman/listinfo/python-list
MySQLdb module, method executemany with anything other than strings?
The method cursor.executemany is there in order to avoid multiple calls
to cursor.execute().
I have tried, with success, to do like every single example (that I
have found on the www) on the subject shows, to use a insert statement
on the form:
statement = INSERT INTO table (colA,colB,colC) values (%s,%s,%s)
and pass in a list containing tuples
list = [('bla','bla','bla'),('bla','bla','bla'),('bla','bla','bla')]
on the form
cursor.executemany(statement,list)
This works fine for all strings, but I have never been able to insert a
single integer or a float using this method. I get an error message
reporting that float (or an int) is required.
Statement is then of course changed to something like
statement = INSERT INTO table (colA,colB,colC) values (%s,%i,%f)
list = [('bla',1,0.65),('bla',3,3.7),('bla',3,0.9)]
Havee anybody experienced similar problems?
Am I doing something wrong?
Any feedback is greatly appreciated.
Here is som real output from the interpreter:
>>> statement = 'insert into testtable3 (url,probability) values (%s,%f)'
>>> l
[('url1', 0.98999), ('url2', 0.89001)]
>>> cursor.executemany(statement,l)
Traceback (most recent call last):
File "", line 1, in ?
File "C:\Python24\Lib\site-packages\MySQLdb\cursors.py", line 181, in
execu
any
self.errorhandler(self, TypeError, msg)
File "C:\Python24\Lib\site-packages\MySQLdb\connections.py", line 33,
in de
lterrorhandler
raise errorclass, errorvalue
TypeError: float argument required
--
http://mail.python.org/mailman/listinfo/python-list
Re: newbie question: convert a list to one string
[EMAIL PROTECTED] wrote: > H! > > I'm searching for the fastest way to convert a list to one big string. > > For example: > test = ['test','test2','test3'] '-'.join(test) -- Maciej "Fiedzia" Dziardziel (fiedzia (at) fiedzia (dot) prv (dot) pl) www.fiedzia.prv.pl Stewardesses is the longest word that is typed with only the left hand. -- http://mail.python.org/mailman/listinfo/python-list
Re: overload builtin operator
Shaun wrote: > Hi, > > I'm trying to overload the divide operator in python for basic arithmetic. > eg. 10/2 ... no classes involved. > > I am attempting to redefine operator.__div__ as follows: > > # my divide function > def safediv(a,b): > return ... > > # reassign buildin __div__ > import operator > operator.__div__ = safediv > > The operator.__dict__ seems to be updated OK but the '/' operator still > calls buildin __div__ Actually, int1 / int2 is, I believe, equivalent to int.__div__(int1, int2) operator.__div__ does not get called. > Does anyone know if this is possible and if I'm going along the correct > path with my attempts above? > Is it possible to do this using a C extention? No, you can't replace the methods on builtin types. -- Robert Kern [EMAIL PROTECTED] "In the fields of hell where the grass grows high Are the graves of dreams allowed to die." -- Richard Harter -- http://mail.python.org/mailman/listinfo/python-list
Re: newbie question: convert a list to one string
<[EMAIL PROTECTED]> wrote: >I'm searching for the fastest way to convert a list to one big string. The join() method of strings. The string instance in question being the separator you want, so: " ".join(test) -- \S -- [EMAIL PROTECTED] -- http://www.chaos.org.uk/~sion/ ___ | "Frankly I have no feelings towards penguins one way or the other" \X/ |-- Arthur C. Clarke her nu becomeþ se bera eadward ofdun hlæddre heafdes bæce bump bump bump -- http://mail.python.org/mailman/listinfo/python-list
Re: loop in python
I am going to be a bit blunt. Don't get offended. >> Also the first thing any newbie to python asks me is abt "raw speed in >> comparison with similar languages like perl" when i advocate python to perl. Judging by your other posts, you are a newbie yourself. You are not really in a position to 'advocate' any language over others. >> I agree that python emphasizes on readability which i didnt see in many of >> the languages, but when the application concern is speed, does it mean that >> python is not yet ready? even most of the googling abt python vs perl >> convince me that perl is faster than python in most of the aspects. One does not compare speed when they use Perl/Python/Ruby/Tcl. They are all more or less in the same performance ball park. Next don't make up your own benchmarks and jump to conclusions. Writing good benchmarks is an art. If you need data, look at peer reviewed benchmarks such as this one. http://shootout.alioth.debian.org/ As with all benchmarks, it is really hard to make general conclusions. And you are simply looking at the wrong issue. Even if Python is 20 times slower than it's current implementation, it would still serve my purposes. Do you believe that you need more speed? Tell us what is it exactly that you are building and we will tell you what to do. Fetishes with Speed and executable size are very common for young newbies. I know because I had been there myself several years ago. Python has been more than ready as far as speed goes. Real people, real enterprises have been using Python in high load applications for quite a while now and there is nothing really left to proove. People have written entire application servers and databases in Python. I taught myself atleast half a dozen ways to write native extensions for Python, just in case. In the past 4 yrs or so that I have been using Python as my main language, I did not need to speed up my Python program even once with a custom extension. And I process multi giga byte data sets. Why? Because, if your program is slow, chances really are that your algorithm is slow, not the language. And most of the Python modules that are available that need speed (GUIs, image processing etc), are already written in C so that you, as a user, don't have to worry. Just get over your imaginary need for speed and learn to use Python for what it is intended. Once again, post your actual application need, not vague requirements with artificial conditions (I don't want C modules). You said, elsewhere that you are writing a web application. People have been using CGI, which has a terrible performace record for decades on very slow machines compared to modern PCs. My point is, web applications, "generally" aren't exactly the kind of applications that have a lot of computational overhead, atleast not from the logic that runs your site and is likely to be written in Python. -- http://mail.python.org/mailman/listinfo/python-list
Re: pipes like perl
> "infidel" <[EMAIL PROTECTED]> (i) wrote: >i> .readlines() won't return until it hits end-of-file, but the "man" >i> command waits for user input to scroll the content, like the "more" or >i> "less" commands let you view "pages" of information on a terminal. man shouldn't wait for user input if its output is a pipe. Try man man|cat. -- Piet van Oostrum <[EMAIL PROTECTED]> URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4] Private email: [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
Re: Should I move to Amsterdam?
Martin P. Hellwig enlightened us with: > Personal transportation sucks in the Netherlands, if you live in the > Randstad (the area of the above mentioned cities) and you have to > travel across the Randstad, you go with the bike and/or > bus/tram/metro/train because that is the fastest way of > transportation. And a bike isn't "personal transportation"? > By the way, the big cities are notorious for losing your bike fast. True. Unless you have two proper locks. In that case your bike will last a very long time. > That doesn't mean that public transportation is good, no actual > since the public transportation is commercialized it sucks too. It's quite good actually. The Dutch Railways (Nationale Spoorwegen, NS for short) have a reputation of being late, but it isn't that bad. Trains run frequently, and if you have a serious delay, you even get part of your money back. My GF and I just got back from a holiday in Croatia. There, there is only a train every four hours, and then you're lucky. The track is so bad, going by bus is just as fast, except you can buy a ticket on the bus instead of having to buy a ticket + reservation in advance. On the way back, we used the ICE (intercity express) through Germany. It got delayed, so we missed our train to Amsterdam by 15 minutes. The delay was in Köln, because the pope paid a visit - well known to the Deutsche Bahn, but still they didn't do anything about it. We had to use another train which left two hours later. And we didn't get any compensation for this - not even for the reservation for the train we missed. We had a delay of two hours. In The Netherlands you would at least get a significant percentage of your money back. Not in Germany. After all, I think with the frequent trains (compared to Croatia) and reasonable refunds (compared to Germany), the NS isn't that bad after all. > Just don't plan to get anywhere special with public transportation > after 2300h. There are night trains between the big cities in the Randstad. At least in Amsterdam busses go through the city all the night, every night. I don't know about other cities - I live in Amsterdam. > Well politics, in the Netherlands is like politics in the rest of > Western-Europe North-Atlantic-coast countries, excluding UK & > Ireland. Still, we were the first ones to legalize properly executed eutanasia. We were also the first to have official single-sex marriages. I don't know about other countries, but here prostitution is a regular job, so you have to pay taxes as a prostitute, and there is even a union. > Most of the time these politicians are social caring about everybody > in the country including non-voters, non-payers and > fanatic-believers of-whatever-you-can-imagine. That's very true. I'm not too happy about that. Too many people refuse to vote, for just that reason. > Most people in here are non-believers or so lightly believers that > you won't know the difference between them and the non-believers. > The biggest part of the remaining believers are realistic and value > life, moral and norms without compromising public safety, of course > fanatics are every where in the world including the Netherlands. Here in Amsterdam, things are getting more nasty. A writer/critic/actor was killed "in the name of Allah", just because he excercised his freedom of speech. Another man was seriously messed up while standing in his own front door opening, just because he's homosexual. In his street, sometimes people are shouting "Go away you homo, you're not welcome here. This is a Macoccan street!. I'm not discriminating, but Maroccans telling Dutch people they aren't welcome in their own captial? I wish _those_ people would just go back to Marocco. > The only serious downsize is that in the Randstad the house prices > are too high Very true. My girlfriend and I are renting a house in the northern part of Amsterdam, just above Central Station. We had to search quite hard to find that, though! Sybren -- The problem with the world is stupidity. Not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? Frank Zappa -- http://mail.python.org/mailman/listinfo/python-list
Re: Should I move to Amsterdam?
Adriaan Renting enlightened us with: > A lot of my foreign collegues commplain about how rude the dutch can > be. Countries like sweden or japan seem to have much better > manners. I also think the Dutch aren't all that communicative. I was queueing in a store when they announced to have the new CD from an already deceased artist. I turned around to tell the man behind me "I wonder how they did that". The reaction was just "yeah", and he looked away from me. Just coming back from Croatia, where everybody likes to talk to each other, it was indeed a bit of a shock. Another reason the Dutch are sometimes found to be a bit rude, is because usually we just say what we think. For some cultures, this is indeed considered to be rude. I just think it's honest. > I do think however that New york should have it's name reverted to > New Amsterdam ;-) Definitely ;-) Sybren -- The problem with the world is stupidity. Not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? Frank Zappa -- http://mail.python.org/mailman/listinfo/python-list
Re: loop in python
James enlightened us with: > One does not compare speed when they use Perl/Python/Ruby/Tcl. They > are all more or less in the same performance ball park. I don't want to offend you or anything, but doesn't the second sentence mean that someone DID do a speed comparison? Sybren -- The problem with the world is stupidity. Not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? Frank Zappa -- http://mail.python.org/mailman/listinfo/python-list
Re: Should I move to Amsterdam?
> "Martin P. Hellwig" <[EMAIL PROTECTED]> (MPH) wrote: >MPH> Of course this is all done with public transport and/or bike, not without >MPH> reason. >MPH> Personal transportation sucks in the Netherlands, if you live in the >MPH> Randstad (the area of the above mentioned cities) and you have to travel >MPH> across the Randstad, you go with the bike and/or bus/tram/metro/train >MPH> because that is the fastest way of transportation. That depends very much on where you live and where you have to go (mostly on the number of changes of transport vehicle). I, for example live in a small village, 11 km from my work in Utrecht. By bus it is 45-60 minutes, by bike 40 min. and by car (rush hour) usually 20-25 min. Only when something serious happens it can be 45 min. by car. This happens about once a year. Most of the time I take the bike, but not for the speed. It is actually a pleasant ride, mainly through woods and meadows. My daughter worked some years ago in Nieuwegein, adjacent to Utrecht. By car 20 min., by public transport 60-90 min. And this is not in some remote area, but just in the center of the country, one of the most densely populated areas. -- Piet van Oostrum <[EMAIL PROTECTED]> URL: http://www.cs.uu.nl/~piet [PGP 8DAE142BE17999C4] Private email: [EMAIL PROTECTED] -- http://mail.python.org/mailman/listinfo/python-list
RE Despair - help required
I am trying the following:
re.search(r'\\[^"\\]+(?=("?$))', "c:\ret_files")
and I get a return of NoneType, and I have no idea why. I know that I
missing something here, but I really can't figure out why (I bet it's
something obvious). I also tried this RE on KODOS and it works fine
there, so I am really puzzled.
Any ideas?
Thanks.
--
http://mail.python.org/mailman/listinfo/python-list
Re: Should I move to Amsterdam?
The problem with the world is stupidity. Not saying there should be acapital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? Frank Zappa Geef mij wat vloerbedekking onder deze vette zwevende sofa sorry, very off-topic, couldn't resist dimitri -- http://mail.python.org/mailman/listinfo/python-list
Re: Command Line arguments
On Thu, 25 Aug 2005 00:46:41 -0700, Tim Roberts wrote: > michael <[EMAIL PROTECTED]> wrote: > >>I have a question about Windows based python (2.4 and later). >> >>For example, if I make a script called test.py like so: >> >>import sys >>print sys.argv >> >>then run it: >> >>python test.py this is a test >> >>I see a list with >> >>['test.py', 'this', 'is', 'a', 'test'] >> >> >>All is good! >> >>BUT... >> >>If i make .py extensions be run as exes (by setting the .py extension to >>be executable with PATHEXT setting in environment variables, the Python >>program will run, but NO arguments are passed! >> >>For example, after setting .py extension to be executable, i get this: >> >>test this is a test >> >>I get ['test.py]. NO arguments are passed. >> >>NOTE: This can NOT be blamed on Windows in my mind because Python2.2 and >>earlier works FINE. > > It is a configuration problem. Bring up a Command Shell and run the assoc > and ftype commands like this: > > C:\Tmp>assoc .py > .py=Python.File > > C:\Tmp>ftype Python.File > Python.File="C:\Apps\Python24\python.exe" "%1" %* > > C:\Tmp> > > The KEY part of that is the %* at the end of the Python.File defintion. > That tells the system to insert the rest of the command line parameters at > that point. If you have ONLY the "%1", the command will run but no > parameters will be forwarded. If so, you can fix this by typing: > > C:\Tmp>ftype Python.File="C:\Apps\Python24\python.exe" "%1" %* > > Substituting your own path, of course. Tim, I can confirm you were right! Thank you very much. This will get us through the issue. I wonder why this was needed? One way or the other, you taught me something and I thank you. Michael Christopher -- http://mail.python.org/mailman/listinfo/python-list
Re: RE Despair - help required
Yoav wrote:
> I am trying the following:
>
> re.search(r'\\[^"\\]+(?=("?$))', "c:\ret_files")
>
> and I get a return of NoneType, and I have no idea why. I know that I
> missing something here, but I really can't figure out why (I bet it's
> something obvious). I also tried this RE on KODOS and it works fine
> there, so I am really puzzled.
>
> Any ideas?
Look at the second string. It has "\r" in the middle of it where you
really want "\\r" (or alternatively r"c:\ret_files").
--
Robert Kern
[EMAIL PROTECTED]
"In the fields of hell where the grass grows high
Are the graves of dreams allowed to die."
-- Richard Harter
--
http://mail.python.org/mailman/listinfo/python-list
Re: RE Despair - help required
Yoav enlightened us with:
> I am trying the following:
>
> re.search(r'\\[^"\\]+(?=("?$))', "c:\ret_files")
>
> and I get a return of NoneType, and I have no idea why.
Because you don't match a carriage return "\r".
> I know that I missing something here, but I really can't figure out
> why (I bet it's something obvious).
Use forward slashes instead of backward slashes. And go nag at
Microsoft for using the most widely used escape character as a path
separator...
Sybren
--
The problem with the world is stupidity. Not saying there should be a
capital punishment for stupidity, but why don't we just take the
safety labels off of everything and let the problem solve itself?
Frank Zappa
--
http://mail.python.org/mailman/listinfo/python-list
Re: Command Line arguments
On Thu, 25 Aug 2005 00:46:41 -0700, Tim Roberts wrote: > michael <[EMAIL PROTECTED]> wrote: > >>I have a question about Windows based python (2.4 and later). >> >>For example, if I make a script called test.py like so: >> >>import sys >>print sys.argv >> >>then run it: >> >>python test.py this is a test >> >>I see a list with >> >>['test.py', 'this', 'is', 'a', 'test'] >> >> >>All is good! >> >>BUT... >> >>If i make .py extensions be run as exes (by setting the .py extension to >>be executable with PATHEXT setting in environment variables, the Python >>program will run, but NO arguments are passed! >> >>For example, after setting .py extension to be executable, i get this: >> >>test this is a test >> >>I get ['test.py]. NO arguments are passed. >> >>NOTE: This can NOT be blamed on Windows in my mind because Python2.2 and >>earlier works FINE. > > It is a configuration problem. Bring up a Command Shell and run the assoc > and ftype commands like this: > > C:\Tmp>assoc .py > .py=Python.File > > C:\Tmp>ftype Python.File > Python.File="C:\Apps\Python24\python.exe" "%1" %* > > C:\Tmp> > > The KEY part of that is the %* at the end of the Python.File defintion. > That tells the system to insert the rest of the command line parameters at > that point. If you have ONLY the "%1", the command will run but no > parameters will be forwarded. If so, you can fix this by typing: > > C:\Tmp>ftype Python.File="C:\Apps\Python24\python.exe" "%1" %* > > Substituting your own path, of course. SOLVED! Thank you. I wonder why this was needed for 2.4 and not 2.2? I don't think it was lingering things from old installs because it happened on a persons computer that had never had any python installed before 2.4. Anyway, THANKS! Michael -- http://mail.python.org/mailman/listinfo/python-list
Re: Doubt C and Python
On Tue, 23 Aug 2005 06:15:03 +0100, praba kar wrote: > Dear All, >I want to know the link between c and python. >Some people with C background use Python instead > of programming in C.why? > > > > regards > Prabahar > > > > > > Just my $.02 I am a long time c/c++ programmer (by profession). I fell in love with python about 2 years ago. I use python for many things now, and I always have said, "When it is too slow, I will write it in c++". I have not hit that point yet. For some reasons that are hard to explain, even though python "should" be slower and maybe even is sometimes, it never is an issue. One reason is that python has so much better data structures built in, and THEY are written in C, I end up with faster code. For example, if I am doing a bunch of string compares in C, I would use a dictionary in python. Python ends up faster because I can get to a better algorithm FASTER. The other reason is that so many times, a hardware I/O device is really the limiting factor (such as a hard disc, or a serial/network connection, or waiting for the user). I have found that GUI programs written in python/wxpython to be every bit as fast as pure C++. I guess you could say that because the LIBRARIES of python are in C, and because you are never very far from a library call, you end up running C code a large percentage of the time, even when you are writing in Python. My advice is to just TRY python and resolve the "slow" speed if you ever hit it. I never have and I write a lot of code, even hardcore math and image processing (See PIL - python Imaging Library). Michael -- http://mail.python.org/mailman/listinfo/python-list
Re: MySQLdb module, method executemany with anything other than strings?
[EMAIL PROTECTED] wrote:
> The method cursor.executemany is there in order to avoid multiple calls
> to cursor.execute().
>
> I have tried, with success, to do like every single example (that I
> have found on the www) on the subject shows, to use a insert statement
> on the form:
> statement = INSERT INTO table (colA,colB,colC) values (%s,%s,%s)
>
> and pass in a list containing tuples
> list = [('bla','bla','bla'),('bla','bla','bla'),('bla','bla','bla')]
>
> on the form
>
> cursor.executemany(statement,list)
>
> This works fine for all strings, but I have never been able to insert a
> single integer or a float using this method. I get an error message
> reporting that float (or an int) is required.
>
> Statement is then of course changed to something like
> statement = INSERT INTO table (colA,colB,colC) values (%s,%i,%f)
> list = [('bla',1,0.65),('bla',3,3.7),('bla',3,0.9)]
>
> Havee anybody experienced similar problems?
> Am I doing something wrong?
> Any feedback is greatly appreciated.
>
>
> Here is som real output from the interpreter:
>
statement = 'insert into testtable3 (url,probability) values (%s,%f)'
^^
That's your problem, right there.
l
>
> [('url1', 0.98999), ('url2', 0.89001)]
>
cursor.executemany(statement,l)
>
> Traceback (most recent call last):
> File "", line 1, in ?
> File "C:\Python24\Lib\site-packages\MySQLdb\cursors.py", line 181, in
> execu
> any
> self.errorhandler(self, TypeError, msg)
> File "C:\Python24\Lib\site-packages\MySQLdb\connections.py", line 33,
> in de
> lterrorhandler
> raise errorclass, errorvalue
> TypeError: float argument required
>
It's just that you should use "%s" for *all* parameters, no matter what
their type:
>>> conn = db.connect()
>>> curs = conn.cursor()
>>> curs.execute("""
... create table thingy(
...f1 char(10) primary key,
...f2 float)""")
0L
>>> l = [('url1', 0.98999), ('url2', 0.89001)]
>>> curs.executemany("""
... insert into thingy (f1, f2) values (%s, %s)""", l)
2L
>>>
regards
Steve
--
Steve Holden +44 150 684 7255 +1 800 494 3119
Holden Web LLC http://www.holdenweb.com/
--
http://mail.python.org/mailman/listinfo/python-list
Re: Should I move to Amsterdam?
Sybren Stuvel wrote: > Martin P. Hellwig enlightened us with: > [...] > > On the way back, we used the ICE (intercity express) through Germany. > It got delayed, so we missed our train to Amsterdam by 15 minutes. The > delay was in Köln, because the pope paid a visit - well known to the > Deutsche Bahn, but still they didn't do anything about it. We had to > use another train which left two hours later. And we didn't get any > compensation for this - not even for the reservation for the train we > missed. > > We had a delay of two hours. In The Netherlands you would at least get > a significant percentage of your money back. Not in Germany. > [...] Hitler must be turnng in his grave. regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: Doubt C and Python
> > On Tue, 23 Aug 2005 06:15:03 +0100, praba kar wrote: > > > Dear All, > >I want to know the link between c and python. > >Some people with C background use Python instead > > of programming in C.why? > > > > > > > > regards > > Prabahar > > > > > > > > > Just my $.02 > > I am a long time c/c++ programmer (by profession). I fell in love with > python about 2 years ago. I use python for many things now, > and I always > have said, "When it is too slow, I will write it in c++". > > I have not hit that point yet. For some reasons that are hard > to explain, > even though python "should" be slower and maybe even is sometimes, it > never is an issue. I made the same experience. The only reason I have for using C++ is number crunching. And I love boost python for building the bridge. Greetings, Uwe. -- http://mail.python.org/mailman/listinfo/python-list
Re: while c = f.read(1)
Antoon Pardon wrote: > Op 2005-08-24, Magnus Lycka schreef <[EMAIL PROTECTED]>: > >>Antoon Pardon wrote: >> >>>I think he did, because both expression are not equivallent >>>unless some implicite constraints make them so. Values where >>>both expressions differ are: >>> >>> start1=67, stop1=9, start2=10, stop2=29 This is just too fatuous to ignore, sorry. >> >>Ouch! That didn't occur to me. How sloppy to just assume that >>time periods can't end before they start. > > > I have no trouble that you assume a time period starts before > it ends. > > But two pieces of code that only give the same result under > particular assumptions are not equivallent. For all I know > his code might work without this assumption and thus be > usefull in circumstances where yours is not. > > Maybe someone uses a convention where time intervals that > stop before they start can have some meaning. > > Equivallent code IMO always gives the same results, not > only under the particular constraints you are working with. > > >>I'll shut up now. You win, >>I'm obviously the idiot here, and Python's must be >>redesigned from ground up. Pyrdon maybe? > > > If I ever design a language it'll be called: 'Queny' > ...and you will regard it as perfect and be completely unable to understand why nobody likes it. Could we possibly reduce the number of arguments about ridiculous postulates such as , and try to remember that most people on this list are dealing with real life? Magnus gave you a perfectly reasonable example of some code that could be simplified. You say the two pieces of code aren't equivalent. While you may be (strictly) correct, your assertion signally fails to add enlightenment to the discussion. I continue to look forward to the first post in which you actually accept someone else's point of view without wriggling and squirming to justify your increasingly tenuous attempts to justify every opinion you've ever uttered on this group :-) regards Steve -- Steve Holden +44 150 684 7255 +1 800 494 3119 Holden Web LLC http://www.holdenweb.com/ -- http://mail.python.org/mailman/listinfo/python-list
Re: MySQLdb module, method executemany with anything other than strings?
I just realised that myself about two minutes ago, but thanks anyway! -- http://mail.python.org/mailman/listinfo/python-list
Re: HTML/text formatting question
"Dr. Who" <[EMAIL PROTECTED]> writes:
> This seems clunky and my next step was going to be to define generic
> functions which would generate the surrounding html tags only when
> passed the proper argument. I was wondering if there was a better way
> to do this with a standard Python library. It looked like formatter
> might but that it also might be too low-level.
You could use something like this:
class HTMLFormatter:
def __init__(self, tag, contents=None, **kwargs):
self.tag = tag
self._content = contents
self.attrs = dict()
self._set_attrs(kwargs)
def _set_attrs(self, attrs):
self.attrs = attrs
if '_class' in self.attrs:
self.attrs['class'] = self.attrs['_class']
del self.attrs['_class']
def set_content(self, contents, **kwargs):
"""
Set content of HTML element to contents.
>>> f = HTMLFormatter('a')
>>> f.set_content('cat', href='http://www.cat.org')
>>> str(f)
'http://www.cat.org";>cat'
>>> str(HTMLFormatter('td', 'cat'))
'cat'
>>> str(HTMLFormatter('p', 'kitty kit', _class='cat'))
'kitty kit'
>>> str(HTMLFormatter('br'))
''
"""
self._content = contents
if kwargs:
self._set_attrs(kwargs)
def set_attribute(self, attr, val):
"""Set/update attribute 'attr' to 'val'."""
self.attrs[attr] = val
def add_content(self, contents):
"""Add content to element.
>>> p = HTMLFormatter('p', 'name of the cat is ')
>>> p.add_content('meow')
>>> str(p)
'name of the cat is meow'
>>> p = HTMLFormatter('td')
>>> p.add_content('cat')
>>> str(p)
'cat'
"""
if self._content is None:
self._content = ''
self._content = "%s%s" % (self._content, str(contents))
def contents(self):
"""Get contents of object.
>>> p = HTMLFormatter('p', 'nice doggy dog')
>>> p.contents()
'nice doggy dog'
>>> p.add_content(HTMLFormatter('em', 'called wuff'))
>>> p.contents()
'nice doggy dogcalled wuff'
"""
return self._content
def __str__(self):
open_tag = '%s' % self.tag
if self.attrs:
attrs = self.attrs.items()
attrs.sort()
attrs_str = ' '.join(['%s="%s"' % (k, v) \
for k,v in attrs])
open_tag = '%s %s' % (self.tag, attrs_str)
if self._content is not None:
return '<%s>%s' % (open_tag, self._content, self.tag)
else:
return '<%s/>' % open_tag
Doctest strings show examples how to use it. For serious HTML building stuff
it needs fiddling with, but should be handy for tiny projects.
--
# Edvard Majakari Software Engineer
# PGP PUBLIC KEY available Soli Deo Gloria!
$_ = '456476617264204d616a616b6172692c20612043687269737469616e20'; print
join('',map{chr hex}(split/(\w{2})/)),uc substr(crypt(60281449,'es'),2,4),"\n";
--
http://mail.python.org/mailman/listinfo/python-list
Re: Python 2.1 Bible Source
SuppressedPen wrote: > Hi Everyone! > > Just started with Python 2 weeks ago and I can't put it down it's to easy > and to powerful, I'm sure the goons will be after us for having it soon, Hi > Hi. > > Was wondering if anyone might know where I can find the source code for > PYTHON 2.1 BIBLE book. Apparently it was online until the publisher sold > the company. I also understand it has been sold a second time since the > book was published. Maybe someone has a copy? Thanks. DOUG. you can access the web-site through the web.archive.org, e.g. http://web.archive.org/web/*/http://www.pythonapocrypha.com/ The site runs fairly slowly, but all the pages seem to be there. I even downloaded the source code to the book from http://web.archive.org/web/20040610022324/http://www.pythonapocrypha.com/PySource.tgz HTH Colin -- http://mail.python.org/mailman/listinfo/python-list
Re: Getting rid of "close failed: [Errno 0] No Error" on Win32
Ok , I tried: try: os.popen3(...) except: as someone suggested here. And on FreeBSD I don't get the error message, and it works great. However, on Win32 I do get the annoying message. Any idea why? And How I can make it go away? thanks. Yoav wrote: > I am using os.popen3 to call a console process and get its output and > stderr. However on Win32 (and not OS X) I also get the Errno message. > It's printed to the screen, which I wish to keep clean. How can disable > this notification? > > Thanks. -- http://mail.python.org/mailman/listinfo/python-list
Re: same menu point is activated
OllieZ wrote: > Hi all > > Im trying to learn wxpython by some samples and Ive come across this. > After change EVT_MENU lines from > EVT_MENU(self, ID_OPEN, self.OnOpen) to > self.Bind(wx.EVT_MENU, self.OnOpen) It should be: self.Bind(wx.EVT_MENU, self.OnOpen, id=ID_OPEN) ^^ etc. -greg -- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
Nx wrote: > I am unpacking a list into variables, for some reason they need to be > unpacked into variable names like a0,a1,a2upto aN whatever is > in the list. Explain this "some reason". This smells, and the way to go would be to use a dict mapping a_n to whatever is in the list - not creating variables. How do you want to access generated variables anyway - especially when you don't have the faintest idea how many of them there are? Obviously there can't be code written based on that. Regards, Diez -- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
Nx wrote: > Hi > > I am unpacking a list into variables, for some reason they need to be > unpacked into variable names like a0,a1,a2upto aN whatever is > in the list. Really? Why? -- Robert Kern [EMAIL PROTECTED] "In the fields of hell where the grass grows high Are the graves of dreams allowed to die." -- Richard Harter -- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
"Nx" <[EMAIL PROTECTED]> wrote: > I am unpacking a list into variables, for some reason they need to be > unpacked into variable names like a0,a1,a2upto aN whatever is > in the list. why? -- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
Nx enlightened us with: > I am unpacking a list into variables, for some reason they need to > be unpacked into variable names like a0,a1,a2upto aN whatever is > in the list. You're probably doing things the wrong way. What is your ultimate goal with this? There is probably a better way of doing it. In the mean time, look at eval(). Sybren -- The problem with the world is stupidity. Not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? Frank Zappa -- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
Nx schrieb:
> Hi
>
> I am unpacking a list into variables, for some reason they need to be
> unpacked into variable names like a0,a1,a2upto aN whatever is
> in the list.
>
> How to create the variables dynamically ?
>
> I am looking for something like
> pseudo code line follows :
>
> a%s = str(value)
>>> suffix = 'var'
>>> vars()['a%s' % suffix] = 45
>>> avar
45
--
---
Peter Maas, M+R Infosysteme, D-52070 Aachen, Tel +49-241-93878-0
E-mail 'cGV0ZXIubWFhc0BtcGx1c3IuZGU=\n'.decode('base64')
---
--
http://mail.python.org/mailman/listinfo/python-list
Re: RE Despair - help required
"Yoav" wrote:
>I am trying the following:
>
> re.search(r'\\[^"\\]+(?=("?$))', "c:\ret_files")
>
> and I get a return of NoneType, and I have no idea why. I know that I
> missing something here, but I really can't figure out why
instead of struggling with weird REs, why not use Python's standard
filename manipulation library instead?
http://docs.python.org/lib/module-os.path.html
--
http://mail.python.org/mailman/listinfo/python-list
variable hell
Hi I am unpacking a list into variables, for some reason they need to be unpacked into variable names like a0,a1,a2upto aN whatever is in the list. How to create the variables dynamically ? I am looking for something like pseudo code line follows : a%s = str(value) here below is a snippet from the mylist unpack code #next lines cut the end of line character from each line in the list mylist = [line[:-1] for line in mylist] for index,value in enumerate(mylist): if index == 0 : a0 = str(value) print "a0 : ",a0 elif index == 1 : a1 = str(value) print "a1 : ",a1 Thanks Nx -- http://mail.python.org/mailman/listinfo/python-list
Re: RE Despair - help required
Thanks guys. Issue solved.
I am also going to give Microsoft a call about it. Any other issues you
want me to raise while I am talking to them?
Cheers.
Robert Kern wrote:
> Yoav wrote:
>
>>I am trying the following:
>>
>>re.search(r'\\[^"\\]+(?=("?$))', "c:\ret_files")
>>
>>and I get a return of NoneType, and I have no idea why. I know that I
>>missing something here, but I really can't figure out why (I bet it's
>>something obvious). I also tried this RE on KODOS and it works fine
>>there, so I am really puzzled.
>>
>>Any ideas?
>
>
> Look at the second string. It has "\r" in the middle of it where you
> really want "\\r" (or alternatively r"c:\ret_files").
>
--
http://mail.python.org/mailman/listinfo/python-list
Re: RE Despair - help required
Don't think it will do much good. I need to get them from a file and
extract the last folder in the path. For example:
if I get "c:\dos\util"
I want to extract the string "\util"
Fredrik Lundh wrote:
> "Yoav" wrote:
>
>>I am trying the following:
>>
>>re.search(r'\\[^"\\]+(?=("?$))', "c:\ret_files")
>>
>>and I get a return of NoneType, and I have no idea why. I know that I
>>missing something here, but I really can't figure out why
>
>
> instead of struggling with weird REs, why not use Python's standard
> filename manipulation library instead?
>
> http://docs.python.org/lib/module-os.path.html
>
>
>
>
>
--
http://mail.python.org/mailman/listinfo/python-list
Re: overload builtin operator
Shaun wrote: > Hi, > > I'm trying to overload the divide operator in python for basic arithmetic. > eg. 10/2 ... no classes involved. > > I am attempting to redefine operator.__div__ as follows: > > # my divide function > def safediv(a,b): > return ... > > # reassign buildin __div__ > import operator > operator.__div__ = safediv > > The operator.__dict__ seems to be updated OK but the '/' operator still > calls buildin __div__ It won't work that way. You cannot globally modify the behaviour of an operator, but you can customize how an operator works for your type. Consider: class safeint(int): def __div__(self, other): return safediv(self, other) safeint(10)/2 Reinhold -- http://mail.python.org/mailman/listinfo/python-list
Re: Doubt C and Python
On 2005-08-25, Ben Sizer <[EMAIL PROTECTED]> wrote: > Grant Edwards wrote: >> On 2005-08-23, praba kar <[EMAIL PROTECTED]> wrote: >> > What why it is more efficient. Kindly let me >> > know with some details. >> >> Have you read _any_ of the thread? A number of people have >> already explained in detail why programming in Pything is more >> efficient. Please read the responses you've already gotten. > > Grant, > > Going by the Google Groups timestamps that I see, there's a good chance > that none of the other responses were visible to the OP when the above > followup was posted. You're probably right. Google groups may be "The End of "Usenet as We Know It". -- Grant Edwards grante Yow! Are we on STRIKE yet? at visi.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie question: Sub-interpreters for CAD program
Terry Hancock wrote: > On Wednesday 24 August 2005 09:12 pm, Peter Hansen wrote: >>Or even http://www.pythoncad.org/ which, although probably for >>mechanical CAD work (I haven't looked at it, don't really know), is >>surely a good place to get ideas of what Python can do in this area. > > No, I doubt it. PythonCAD is a 2D mechanical CAD drawing system. > I don't think it would be anywhere near what this guy wants. They're > just different applications. He's looking for an electronic CAD system or > EDA, I'm pretty sure (or looking to write one, rather). As an engineer who's worked extensively in both kinds of systems (primarily designing microcontroller-based circuit boards), and a programmer who's stolen useful ideas from endless amounts of other people's code, I'll say only that I disagree with your implication that looking at PythonCAD will give him no useful ideas whatsoever about how certain aspects of CAD programs could be handled. PCB layout programs do, after all, have to do the basic work of displaying circuits (which as you know are generally shown as 2D drawings). -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: RE Despair - help required
Yoav wrote:
> Don't think it will do much good. I need to get them from a file and
> extract the last folder in the path. For example:
> if I get "c:\dos\util"
> I want to extract the string "\util"
like frederik says (I use '/' as I am using Unix):
>>> import os
>>> os.path.split ('c:/foo/bar')
('c:/foo', 'bar')
>>> os.path.splitext ('c:/foo/bar')
('c:/foo/bar', '')
>>> os.path.splitext ('c:/foo/bar.txt')
('c:/foo/bar', '.txt')
or if you are really reluctant:
>>> 'c:\\foo\\bar'.split ('\\')
['c:', 'foo', 'bar']
>>> 'c:\\foo\\bar'.split ('\\') [-1]
'bar'
> Fredrik Lundh wrote:
>> instead of struggling with weird REs, why not use Python's standard
>> filename manipulation library instead?
>>
>> http://docs.python.org/lib/module-os.path.html
>>
>>
>>
>>
--
rafi
"Imagination is more important than knowledge."
(Albert Einstein)
--
http://mail.python.org/mailman/listinfo/python-list
Re: RE Despair - help required
Yoav wrote: > Don't think it will do much good. I need to get them from a file and > extract the last folder in the path. For example: > if I get "c:\dos\util" > I want to extract the string "\util" Then os.path.basename should be for you. Reinhold -- http://mail.python.org/mailman/listinfo/python-list
RE: RE Despair - help required
Hi, > Don't think it will do much good. I need to get them from a file and > extract the last folder in the path. For example: > if I get "c:\dos\util" > I want to extract the string "\util" Still, os.path is your friend: import os filepath = r'C:\dos\util' base, last = os.path.split(filepath) print base # 'C:\dos' print last # 'util' print os.sep+last # '\util' Don't forget to read > > http://docs.python.org/lib/module-os.path.html for some more info! Regards, Mc! -- http://mail.python.org/mailman/listinfo/python-list
Re: loop in python
Sybren Stuvel wrote: > James enlightened us with: > >>One does not compare speed when they use Perl/Python/Ruby/Tcl. They >>are all more or less in the same performance ball park. > > > I don't want to offend you or anything, but doesn't the second > sentence mean that someone DID do a speed comparison? Yes, and has shown that they are in the same ballpark, and therefore one does not _need_ to compare speed any more. At least, that's how I read what James posted. -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
Peter Maas wrote: > >>> suffix = 'var' > >>> vars()['a%s' % suffix] = 45 > >>> avar > 45 Quoting from http://docs.python.org/lib/built-in-funcs.html#l2h-76 about the "vars" built in: The returned dictionary should not be modified: the effects on the corresponding symbol table are undefined. -- Benji York -- http://mail.python.org/mailman/listinfo/python-list
Re: RE Despair - help required
Yoav wrote: > Don't think it will do much good. I need to get them from a file and > extract the last folder in the path. For example: > if I get "c:\dos\util" > I want to extract the string "\util" You mean like this: import os os.path.sep + os.path.split(r"c:\dos\util")[-1] -- Robert Kern [EMAIL PROTECTED] "In the fields of hell where the grass grows high Are the graves of dreams allowed to die." -- Richard Harter -- http://mail.python.org/mailman/listinfo/python-list
New Arrival to Python
Hi Everyone, I'm totally captivated by Python so far. I want to develop professional-looking Win32 applications with the least effort. I have many years experience with PowerBuilder, PowerBuilder Foundation Class, and SQL Anywhere. I would really like to leverage as many of these skills as possible. Recently I've been learning C#.NET but am concerned with the anticipated longer development times. If it matters, the IDE I choose should also allow for simpler web development. thanks in advance, Norm QUESTIONS: 1. What IDE should I use? 2. If Wing IDE is really good, which version Professional or Personal? 3. Can Sybase's SQL Anywhere Studio be fully integrated with Python? 4. How about versions that integrate with MicroSoft's Visual Studio. Are they generally considered a smart idea? 5. How does Python compare to PowerBuilder's DATAWINDOW technology? 6. What books are worthwhile? My O'Reilly's Safari network has these books: -Core Python Programming; Wesley J. Chun -Python Developer's Handbook; André Dos Santos Lessa -Python Essential Reference, Second Edition; David M Beazley -Perl To Python Migration; Martin C. Brown -Programming Python, 2nd Edition; Mark Lutz -Python Standard Library; Fredrik Lundh -Python & XML; Fred L. Drake, Jr., Christopher A. Jones -Python Cookbook; Alex Martelli, David Ascher -Python Pocket Reference, 2nd Edition; Mark Lutz -Learning Python; David Ascher, Mark Lutz -Python Pocket Reference; Mark Lutz -Python Programming on Win32; Mark Hammond, Andy Robinson -Python: Visual QuickStart Guide; Chris Fehily -Python Programming with the Java™ Class Libraries: A Tutorial for Building Web and Enterprise Applications with Jython; Richard Hightower -Python in a Nutshell; Alex Martelli -Text Processing in Python; David Mertz -Learning Python, 2nd Edition; David Ascher, Mark Lutz -Game Programming with Python, Lua, and Ruby; Tom Gutschmidt -Python Programming for the absolute beginner; MICHAEL DAWSON -Python Cookbook, 2nd Edition; David Ascher, Alex Martelli, Anna Ravenscroft -- http://mail.python.org/mailman/listinfo/python-list
Re: Jargons of Info Tech industry
CBFalconer wrote: > Mike Schilling wrote: >> "Mike Meyer" <[EMAIL PROTECTED]> wrote in message >>> "Mike Schilling" <[EMAIL PROTECTED]> writes: "l v" <[EMAIL PROTECTED]> wrote in message > Xah Lee wrote: > >> (circa 1996), and email should be text only (anti-MIME, circa 1995), > > I think e-mail should be text only. I have both my email and > news readers set to display in plain text only. It prevents > the marketeers and spammers from obtaining feedback that my > email address is valid. A surprising amount of information > can be obtained from your computer by allowing HTML and all > of it's baggage when executing on your computer. Phishing > comes to my mind first and it works because people click the > link without looking to see where the link really takes them. A formatting-only subset of HTML would be useful for both e-mail and Usenet posts. >>> >>> Used to be people who wanted to send formatted text via email >>> would use rich text. It never really caught on. But given that >>> most of the people sending around formatted text are using >>> point-n-click GUIs to create the stuff, the main advantage of >>> HTML - that it's easy to write by hand - isn't needed. >> >> But the other advantage, that it's an existing and popular >> standard, remains. > > However, for both e-mail and news, it is totally useless. It also > interferes with the use of AsciiArt, while opening the recipient to > the dangers above. And HTML has the tendency to make e-mail and Usenet posts unnecessarily bigger, which will continue to be a bugger until broadband links become common enough. -- Denis -- http://mail.python.org/mailman/listinfo/python-list
Re: Fighting Spam with Python
Before you do too much work you should probably check out: http://spambayes.sourceforge.net/ There has already been a lot of work done on this project. FYI, Larry David MacQuigg wrote: > Are you as mad about spam as I am? Are you frustrated with the > pessimism and lack of progress these last two years? Do you have > faith that an open-source project can do better than the big companies > competing for a lock-in solution? If so, you might be interested in > the Open-Mail project. > > I'm writing some scripts to check incoming mail against a registry of > reputable senders, using the new authentication methods. Python is > ideal for this because it will give mail-system admins the ability to > experiment with the different methods, and provide some real-world > feedback sorely needed by the advocates of each method. So far, we > have SPF and CSV. See http://purl.net/macquigg/email/python for the > latest project status. > > I welcome anyone who is interested in helping, expecially if you have > some experience with mail transfer programs, like Sendmail or Postfix, > or spam filtering programs, like SpamAssassin. My Python may not be > the best, so I welcome suggestions there also. We need to make these > scripts a model of clarity. > > -- > Dave > -- http://mail.python.org/mailman/listinfo/python-list
Re: Limited XML tidy
In article <[EMAIL PROTECTED]>, Toby White wrote: > [snip] I do similar stuff in the new (upcoming) version of Atox (atox.sf.net), which works with potentially ill-formed, partial XML (in the form of PYX events) internally, and can take partial, ill-formed XML as input. >The problem is that when the sax handler raises an exception, >I can't see how to find out why. What I want to do is for >DodgyErrorHandler to do something different depending on >where we are in the course of parsing. Is there anyway >to get that information back from xml.sax (or indeed from >any other sax handler?) What I ended up doing was using an SGML parser (sgmlop) instead. It's highly forgiving (even of illegal entities and the like) but gives me the information I need. Might be worth a look in your app too? >Toby -- Magnus Lie Hetland http://hetland.org -- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
Thanks for the many replies here is an example for what it will be used for , in this case fixed at 31 fieldvalues: inputvalues=(s0,s1,s2,s3,s4,s5,s6,s7,s8,s9,s10,s11,s12,s13,s14,s15,s16,s17,s18,s19,s20,s21,s22,s23,s24,s25, s26,s27,s28,s29,s30,s31) MYINSERTSELECT = "INSERT INTO ADDRESS(ALIAS,COMPANY,ADDRESSLI1,ADDRESSLI2,ADDRESSCO,TOWN,ZIP,COUNTRY,TEL1,TEL2,FAX,EMAIL,INTERNET,PERSON1,TITLE1,RES1,PERSON2,TITLE2,RES2,PERSON3,TITLE3,RES3,PERSON4,TITLE4,RES4,PERSON5,TITLE5,RES5,PRODALIAS,PAGER,TLX,ADDMEMO) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)" con1.commit() cur = con1.cursor() try : cur.execute(MYINSERTSELECT,inputvalues) con1.commit() print 'Inserted 1 record' except IOError, (errno, strerror): print "I/O error(%s): %s" % (errno, strerror) except ValueError: print "Could not convert data to an integer." except: print "Unexpected error:", sys.exc_info()[0] raise I am sure there is an easier way, but I have not found it yet. Nx -- http://mail.python.org/mailman/listinfo/python-list
Re: Fighting Spam with Python
David MacQuigg wrote: > Are you as mad about spam as I am? Are you frustrated with the > pessimism and lack of progress these last two years? Do you have > faith that an open-source project can do better than the big companies > competing for a lock-in solution? If so, you might be interested in > the Open-Mail project. > > I'm writing some scripts to check incoming mail against a registry of > reputable senders, using the new authentication methods. Python is > ideal for this because it will give mail-system admins the ability to > experiment with the different methods, and provide some real-world > feedback sorely needed by the advocates of each method. So far, we > have SPF and CSV. See http://purl.net/macquigg/email/python for the > latest project status. You might find www.spambayes.org of interest, in several ways. -Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
Nx wrote:
> Thanks for the many replies
>
> here is an example for what it will be used for , in this case
> fixed at 31 fieldvalues:
>
>
> inputvalues=(s0,s1,s2,s3,s4,s5,s6,s7,s8,s9,s10,s11,s12,s13,s14,s15,s16,s17,s18,s19,s20,s21,s22,s23,s24,s25,
> s26,s27,s28,s29,s30,s31)
>MYINSERTSELECT = "INSERT INTO
> ADDRESS(ALIAS,COMPANY,ADDRESSLI1,ADDRESSLI2,ADDRESSCO,TOWN,ZIP,COUNTRY,TEL1,TEL2,FAX,EMAIL,INTERNET,PERSON1,TITLE1,RES1,PERSON2,TITLE2,RES2,PERSON3,TITLE3,RES3,PERSON4,TITLE4,RES4,PERSON5,TITLE5,RES5,PRODALIAS,PAGER,TLX,ADDMEMO)
>VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)"
>
>con1.commit()
>cur = con1.cursor()
>try :
> cur.execute(MYINSERTSELECT,inputvalues)
If I refer to your original post, there's someting I dont understand:
"""
I am unpacking a list into variables, for some reason they need to be
unpacked into variable names like a0,a1,a2upto aN whatever is
in the list.
"""
Why unpack inputvalues if your next step is to pack'em back again ? Or
what did I miss ?
--
bruno desthuilliers
python -c "print '@'.join(['.'.join([w[::-1] for w in p.split('.')]) for
p in '[EMAIL PROTECTED]'.split('@')])"
--
http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
On Thu, 2005-08-25 at 10:43, Nx wrote: > Thanks for the many replies > > here is an example for what it will be used for , in this case > fixed at 31 fieldvalues: > > > inputvalues=(s0,s1,s2,s3,s4,s5,s6,s7,s8,s9,s10,s11,s12,s13,s14,s15,s16,s17,s18,s19,s20,s21,s22,s23,s24,s25, > s26,s27,s28,s29,s30,s31) inputvalues = tuple(mylist) Hope this helps, Carsten. -- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
You might be able to do something along the lines of
for count in range(0,maxcount):
value = values[count]
exec(eval("'a%s=%s' % (count, value)"))
But I am also wonder: why?
Peter Maas wrote:
> >>>suffix = 'var'
> >>>vars()['a%s' % suffix] = 45
> >>>avar
>45
--
http://mail.python.org/mailman/listinfo/python-list
Re: New Arrival to Python
Norm Goertzen wrote: I can just answer about books: > -Programming Python, 2nd Edition; Mark Lutz Quite good. Exhaustive and authoritative. The 1st edition was questionable but the second one is very fine. > -Python Standard Library; Fredrik Lundh Quite a need for a beginner. The HTML docu of Python is huge and a little bit confusing at first. This book can avoid you a lot of search-and-read work. > -Python & XML; Fred L. Drake, Jr., Christopher A. Jones Required if you plan to work with XML. (there are other books regarding this topic, anyway) > -Python Cookbook; Alex Martelli, David Ascher The most useful book after your first week of real work with python. > -Learning Python, 2nd Edition; David Ascher, Mark Lutz Excellent primer. Probably too elementar for a professional programmer. > -Python Programming on Win32; Mark Hammond, Andy Robinson Excellent book for Windows users. Exhaustive and clear. > -Text Processing in Python; David Mertz Very interesting book on a very common programming task. Read it if you have time. > -Python Cookbook, 2nd Edition; David Ascher, Alex Martelli, Anna > Ravenscroft I have the 1st edition and it is very fine. The second one can just be better. HTH --- Alessandro Bottoni -- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
On Thu, 2005-08-25 at 11:04, I hastily wrote: > On Thu, 2005-08-25 at 10:43, Nx wrote: > > Thanks for the many replies > > > > here is an example for what it will be used for , in this case > > fixed at 31 fieldvalues: > > > > > > inputvalues=(s0,s1,s2,s3,s4,s5,s6,s7,s8,s9,s10,s11,s12,s13,s14,s15,s16,s17,s18,s19,s20,s21,s22,s23,s24,s25, > > s26,s27,s28,s29,s30,s31) > > inputvalues = tuple(mylist) And actually, you probably don't have to do that, because the execute method should be able to handle a list just as well as a tuple. -Carsten. -- http://mail.python.org/mailman/listinfo/python-list
Re: RE Despair - help required
In article <[EMAIL PROTECTED]>, Yoav <[EMAIL PROTECTED]> wrote:
>Fredrik Lundh wrote:
>> "Yoav" wrote:
>>>I am trying the following:
>>>
>>>re.search(r'\\[^"\\]+(?=("?$))', "c:\ret_files")
>> instead of struggling with weird REs, why not use Python's standard
>> filename manipulation library instead?
>>
>> http://docs.python.org/lib/module-os.path.html
>Don't think it will do much good. I need to get them from a file and
>extract the last folder in the path. For example:
>if I get "c:\dos\util"
>I want to extract the string "\util"
Did you actually look at the docs Fredrik pointed you at? Did you,
in particular, notice os.path.basename, which does (almost) exactly
what you want?
--
\S -- [EMAIL PROTECTED] -- http://www.chaos.org.uk/~sion/
___ | "Frankly I have no feelings towards penguins one way or the other"
\X/ |-- Arthur C. Clarke
her nu becomeþ se bera eadward ofdun hlæddre heafdes bæce bump bump bump
--
http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
> """ > > Why unpack inputvalues if your next step is to pack'em back again ? Or > what did I miss ? > The original values in this case are being read from a text file with one value including a linefeed per line and the original idea was, that having them read into a list was the best way to massage them into the form required to be used as input values for the insert statement. Nx -- http://mail.python.org/mailman/listinfo/python-list
Re: RE Despair - help required
Thank you all guys. It seems like the simpler the solution, the more I am happy about it. Sorry, for the simple question, I am quite new to this lang. Cheers. Robert Kern wrote: > Yoav wrote: > >>Don't think it will do much good. I need to get them from a file and >>extract the last folder in the path. For example: >>if I get "c:\dos\util" >>I want to extract the string "\util" > > > You mean like this: > > import os > os.path.sep + os.path.split(r"c:\dos\util")[-1] > -- http://mail.python.org/mailman/listinfo/python-list
prevent callback during initialization
I am creating several tkinter widgets. In my classes they each have a change() method that is a callback to various IntVar, and StringVar objects. Everything works fine, but don't really want to trigger the callback when I am initializing each widget/control variable. I can use a "flag" like self.initialized= true, and wrap the change() procedures in an "if self.initialized:" block. I get the impression using "flags" is not the preferred approach. Is there some other way to accomplish this without using a flag? Can I redefine my change() method in __init__(), or would that mess up the callback references already established? Bill -- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
Hey, if the man wants to write it that way, let the man write it that way. If it works for him, great... he's sure confused the heck out of all of us, and that translates into job security for him! As you can see, the name of the post is 'variable hell' and that is exactly what he is creating, so "Adriaan Renting", excellent response! -- http://mail.python.org/mailman/listinfo/python-list
Socket Support When Compiling Python 2.3.5 On Cygwin
I compiled Python 2.3.5 from source on my Cygwin machine (XP), and I got the following error when I tried to initialize Zope: Traceback (most recent call last): File "/opt/Zope-2.7.7/lib/python/ZEO/runzeo.py", line 42, in ? import socket File "/opt/Python23//lib/python2.3/socket.py", line 44, in ? import _socket ImportError: No module named _socket Apparently, Zope depends on the $PY23_HOME/lib/python2.3/lib-dynload/_socket.dll, and this file doesn't exist on my system. What do I need to do to make sure that this file will be created with I compile Python 2.3.5? The really weird thing about this is that I also compiled Python 2.4 on this system, and the socket files were created. What's different about 2.3.5? Thanks in advance! Tom Purl -- http://mail.python.org/mailman/listinfo/python-list
Re: loop in python
Peter Hansen enlightened us with: > Yes, and has shown that they are in the same ballpark, and therefore > one does not _need_ to compare speed any more. Ok. I'd worded it as "there have been tests already, so there is no need to do your own", instead of "one does not test". Sybren -- The problem with the world is stupidity. Not saying there should be a capital punishment for stupidity, but why don't we just take the safety labels off of everything and let the problem solve itself? Frank Zappa -- http://mail.python.org/mailman/listinfo/python-list
Re: Jargons of Info Tech industry
"CBFalconer" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED] > Mike Schilling wrote: >> "Mike Meyer" <[EMAIL PROTECTED]> wrote in message >>> "Mike Schilling" <[EMAIL PROTECTED]> writes: "l v" <[EMAIL PROTECTED]> wrote in message > Xah Lee wrote: > >> (circa 1996), and email should be text only (anti-MIME, circa 1995), > > I think e-mail should be text only. I have both my email and > news readers set to display in plain text only. It prevents > the marketeers and spammers from obtaining feedback that my > email address is valid. A surprising amount of information > can be obtained from your computer by allowing HTML and all > of it's baggage when executing on your computer. Phishing > comes to my mind first and it works because people click the > link without looking to see where the link really takes them. A formatting-only subset of HTML would be useful for both e-mail and Usenet posts. >>> >>> Used to be people who wanted to send formatted text via email >>> would use rich text. It never really caught on. But given that >>> most of the people sending around formatted text are using >>> point-n-click GUIs to create the stuff, the main advantage of >>> HTML - that it's easy to write by hand - isn't needed. >> >> But the other advantage, that it's an existing and popular >> standard, remains. > > However, for both e-mail and news, it is totally useless. Useless except in that it can describe formatting, which is what it would be used for? ( > It also > interferes with the use of AsciiArt, Except that it can specify the use of a fixed-width font, which makes Ascii Art work. It can also distinguish between text that can be reformatted for flow and text than can not. So I think you meant to say that it *enables* Ascii Art. > while opening the recipient to > the dangers above. Which is why a formatting-only subset, which doesn't cause any such dangers, is required. As I said above. Another advantage is that evewry internet-enabled computer today already comes with an HTML renderer (AKA browser), so that a message saved to a file can be read very easily. -- http://mail.python.org/mailman/listinfo/python-list
Experience regarding Python tutorials?
Cheers everyone, I aim to learn a programming language and haven't yet decided on what's going to be. Here I'd like to hear some voices on where I should start, and pls don't hit me google. I have been doing some research, but I'd like to hear about some real life expiriencies on subject. Is Python maybe a to small target for newcomers? Make it compared to Perl... TIA --- -Linux- -Becouse PC is a terible thing to waste... -- http://mail.python.org/mailman/listinfo/python-list
Re: a question about tkinter StringVars()
Eric Brunel wrote: > On Wed, 24 Aug 2005 15:07:27 GMT, William Gill <[EMAIL PROTECTED]> wrote: > >> Working with tkinter, I have a createWidgets() method in a class. >> Within createWidgets() I create several StringVars() and >> assign them to the textvariable option of several widgets. >> Effectively my code structure is: >> >> def createWidgets(self): >> ... >> var = StringVar() >> Entry(master,textvariable=var) >> ... >> ... >> >> Though 'var' would normally go out of scope when createWidgets >> completes, since the Entry and its reference do not go out of scope, >> only the name 'var' goes out of scope, not the StringVar object, Right? > > > Well, apparently not: > > > from Tkinter import * > > class MyStringVar(StringVar): > def __del__(self): > print "I'm dying!" > > root = Tk() > > def cw(): > var = MyStringVar() > Entry(root, textvariable=var).pack() > > cw() > > root.mainloop() > > > Running this script actually prints "I'm dying!", so there is obviously > no reference from the Entry widget to the variable object. The reference > is actually kept at tcl level between an entry and the *tcl* variable, > which knows nothing about the *Python* variable. > > BTW, the whole purpose of StringVar's is to be kept so that the text for > the entry can be retrieved or modified by another part of the program. > So what can be the purpose of creating variables in a function or method > and not keeping them anywhere else than a local variable? I posted that changing back to a non-local variable works now, and that my problem was probably name conflict. I haven't been able to verify that, but I have to assume that was the original problem. My band-aid may have 'worked' because tcl maintained the control variable and callback even though the Python variable was gone. As far as "... the purpose of creating variables ... and not keeping them anywhere else...". I actually was keeping them in a non-local list. I was creating a local variable, appending it to the list, then reusing the local name for the next new control variable: ... var= IntVar() self.variables.append(var) ... This was 'copied' from a snippet I was using as a template. I now use: ... self.variables.append(IntVar()) ... Please let me know if I'm on thin ice here. Bill -- http://mail.python.org/mailman/listinfo/python-list
Re: Fighting Spam with Python
On Thu, 25 Aug 2005 10:18:37 -0400, Peter Hansen <[EMAIL PROTECTED]> wrote: >David MacQuigg wrote: >> Are you as mad about spam as I am? Are you frustrated with the >> pessimism and lack of progress these last two years? Do you have >> faith that an open-source project can do better than the big companies >> competing for a lock-in solution? If so, you might be interested in >> the Open-Mail project. >> >> I'm writing some scripts to check incoming mail against a registry of >> reputable senders, using the new authentication methods. Python is >> ideal for this because it will give mail-system admins the ability to >> experiment with the different methods, and provide some real-world >> feedback sorely needed by the advocates of each method. So far, we >> have SPF and CSV. See http://purl.net/macquigg/email/python for the >> latest project status. > >You might find www.spambayes.org of interest, in several ways. Integration of a good spam filter is one of our top priorities. Spambayes looks like a good candidate. The key new features needed in a spam filter are the ability to extract the sender's identity (not that of the latest forwarder), and to factor into the spam score the reputation of that identity. We could use some help on this integration. I guess I should have said a little more about the Open-Mail project. We are not focused on developing new authentication or filtering methods, but rather, providing a platform that will bring these pieces together and allow the mail admin to chose which methods are used and in what order. Interoperability has been the main barrier to widescale use of authentication. Python is superb at gluing these pieces together. In the flow we envision, the spam filter is the final process, used only on the 5% that is hard to classify. 80% will get an immediate reject. 15% will get an immediate accept without filtering, because the sender is authenticated and has a good reputation. Eventually, all reputable senders will join the 15%, and the 5% will shrink to where we can ignore it. -- Dave -- http://mail.python.org/mailman/listinfo/python-list
Re: Experience regarding Python tutorials?
Shoeshine wrote on 25/08/2005 17:43: > Cheers everyone, I aim to learn a programming language and haven't yet > decided on what's going to be. Here I'd like to hear some voices on > where I should start, and pls don't hit me google. I have been doing > some research, but I'd like to hear about some real life expiriencies on > subject. Is Python maybe a to small target for newcomers? Make it > compared to Perl... Try [http://www.python.org/doc/Intros.html]. There are lots of different-level introductions and tutorials available that should give you an idea of what to expect of Python. -- Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
Adriaan Renting wrote:
> You might be able to do something along the lines of
>
> for count in range(0,maxcount):
> value = values[count]
> exec(eval("'a%s=%s' % (count, value)"))
why using the eval?
exec ('a%s=%s' % (count, value))
should be fine
--
rafi
"Imagination is more important than knowledge."
(Albert Einstein)
--
http://mail.python.org/mailman/listinfo/python-list
Filetypes in email attachments.
Hello everyone, I'm writing a simple spam filter as a project, partly to learn python. I want to filter by filetype, however, the mime content type I get using .get_content_type gives limited and possibly bogus information, especially when trying to detect viruses or spam. I would like to use the magic file to detect the filetype, if this is possible. I have the attachement stored and (generally) decoded in a variable. Justin -- http://mail.python.org/mailman/listinfo/python-list
Re: Experience regarding Python tutorials?
Python is a very good place to start. However,Perl isn't a bad place to start either. Perl has a gazillion ways to express yourself. Perl is overly complicated (yet easy to get started with), so you are exposed to numerous ways to think. Perl gives you 8 million different sized and colored ropes to hang yourself with (google TMTOWTDI), so Perl will teach you to BE CAREFUL. The O'Reilly Perl books are excellent. -- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
In article <[EMAIL PROTECTED]>, Benji York <[EMAIL PROTECTED]> wrote: > Peter Maas wrote: > > >>> suffix = 'var' > > >>> vars()['a%s' % suffix] = 45 > > >>> avar > > 45 > > Quoting from http://docs.python.org/lib/built-in-funcs.html#l2h-76 about > the "vars" built in: > > The returned dictionary should not be modified: the effects on the > corresponding symbol table are undefined. If you really want to make something like this work you can define a class that would work like this: vars = funkyclass() varname = 'x' vars[varname] = value vars.x But this is clearly a design mistake. Either you know the names of the variables when you write the code or you do not. If you know them you can simply assign them directly. If you do not know them then you can't put them in the code to read their values anyway, and what you need is just a regular dictionary. rg -- http://mail.python.org/mailman/listinfo/python-list
Re: Protected message
Your file is attached.-- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
Ron Garret wrote: > If you really want to make something like this work you can define a > class that would work like this: > > vars = funkyclass() > varname = 'x' > vars[varname] = value > vars.x > > But this is clearly a design mistake. Either you know the names of the > variables when you write the code or you do not. If you know them you > can simply assign them directly. If you do not know them then you can't > put them in the code to read their values anyway, and what you need is > just a regular dictionary. In fact, I do this all of the time. class Bunch(dict): def __init__(self, *args, **kwds): dict.__init__(self, *args, **kwds) self.__dict__ = self It's a lifesaver when you're working at the interactive prompt. In the bowels of my modules, I may not know what the contents are at code-time, but at the prompt I probably do. Bunch assists both usages. -- Robert Kern [EMAIL PROTECTED] "In the fields of hell where the grass grows high Are the graves of dreams allowed to die." -- Richard Harter -- http://mail.python.org/mailman/listinfo/python-list
Just a thank... (ignore)
Thanx for sharing... -it was of use. --- -Linux- -Becouse PC is a terible thing to waste... -- http://mail.python.org/mailman/listinfo/python-list
Re: Jargons of Info Tech industry
On Thu, 25 Aug 2005, Mike Schilling wrote: > Another advantage is that evewry internet-enabled computer today already > comes with an HTML renderer (AKA browser), so that a message saved to a file > can be read very easily. I think you're missing the point: email and Usenet are, historically have been, and should always be, plain text mediums. If I wanted to look at prettily formatted HTML, I'd use a web browser to look at the web. -- Rich Teer, SCNA, SCSA, OpenSolaris CAB member President, Rite Online Inc. Voice: +1 (250) 979-1638 URL: http://www.rite-group.com/rich -- http://mail.python.org/mailman/listinfo/python-list
Re: variable hell
Nx wrote: >>""" >> >>Why unpack inputvalues if your next step is to pack'em back again ? Or >>what did I miss ? > > The original values in this case are being read from a text file > with one value including a linefeed per line and the original idea was, > that having them read into a list was the best way to massage them into the > form required to be used as input values for the insert statement. Again, why unpack them into separate variables when they are *already* in the form that you want to use them? -- Robert Kern [EMAIL PROTECTED] "In the fields of hell where the grass grows high Are the graves of dreams allowed to die." -- Richard Harter -- http://mail.python.org/mailman/listinfo/python-list
Re: Experience regarding Python tutorials?
I'd say, start with Python and work yourself into more complex languages. Python teaches you to indent properly, and it is good with being simple, yet powerful at the same time. I'd be happy to teach you the basics with Python. I've taught a few people how to program, and they learn Python pretty quickly, and from that, they are able to get into the "programmer's mindset" and move on to other languages. As an example, I taught a person how to program in Python over about a week period, and after that he wanted to learn C++. We worked on a small project together, using TCP sockets and such, and eventually he made a savegame editor for some game that he was beta testing all on his own, as well as a Netware NLM that checks backup logs and reports the status to a webserver. Python is good in that it does support object oriented programming, yet it's very easy to pickup on. Also, the builtin interpreter makes it easy to try out your code as you are writing it. There are others out there though, such as Microsoft Visual Basic that do a decent job. But, the nice thing about Python is that you can run your programs on Linux as well as Windows without any (or very few) changes. -- http://mail.python.org/mailman/listinfo/python-list
