Find more than one error at once
Is it possible to coax python to find more than one error at once? Thanks, Joseph -- http://mail.python.org/mailman/listinfo/python-list
Re: People still using Tkinter?
On Sat, 10 May 2008 00:20:33 -0500, Kenneth McDonald wrote: Any guesses as to how many people are still using Tkinter? And can anyone direct me to good, current docs for Tkinter? AFAIK `Tkinter` hasn't changed much over time, so old documentation is still current. Ciao, Marc 'BlackJack' Rintsch -- http://mail.python.org/mailman/listinfo/python-list
Re: RELEASED Python 2.6a3 and 3.0a5
I'm trying to install on the latest Ubuntu (8.04) and the following extension modules fail: _bsddb, _curses, _curse_panel, _hashlib, _sqlite3, _ssl, _tkinter, bz2, dbm, gdbm, readline, zlib All of them except for _tkinter are included in the preinstalled Python 2.5.2, so I guess the dependencies must be somewhere there. Does Ubuntu have any non-standard lib dir ? You need to manually install the -dev packages (through aptitude) before building Python. Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: Property in derived class
On May 9, 9:05 pm, George Sakkis [EMAIL PROTECTED] wrote: Using the overridable property recipe [1], [1]http://infinitesque.net/articles/2005/enhancing%20Python's%20property... Thanks, this is a great solution! Joseph -- http://mail.python.org/mailman/listinfo/python-list
Re: anagram finder / dict mapping question
On May 9, 11:19 pm, dave [EMAIL PROTECTED] wrote:
On 2008-05-09 18:53:19 -0600, George Sakkis [EMAIL PROTECTED] said:
On May 9, 5:19 pm, [EMAIL PROTECTED] wrote:
What would be the best method to print the top results, the one's that
had the highest amount of anagrams?? Create a new histogram dict?
You can use the max() function to find the biggest list of anagrams:
top_results = max(anagrams.itervalues(), key=len)
--
Arnaud
That is the biggest list of anagrams, what if I wanted the 3 biggest
lists? Is there a way to specific top three w/ a max command??
import heapq
help(heapq.nlargest)
Help on function nlargest in module heapq:
nlargest(n, iterable, key=None)
Find the n largest elements in a dataset.
Equivalent to: sorted(iterable, key=key, reverse=True)[:n]
HTH,
George
I both the 'nlargest' and the 'sorted' methods.. I could only get the
sorted to work.. however it would only return values like (3, edam)
not the list of words..
Here is what I have now.. Am I over-analyzing this? It doesn't seem
like it should be this hard to get the program to print the largest set
of anagrams first...
def anafind():
fin = open('text.txt')
mapdic = {}
finalres = [] # top answers go here
for line in fin:
line = line.strip()
alphaword = ''.join(sorted(line)) #sorted word as key
if alphaword not in mapdic:
mapdic[alphaword] = [line]
else:
mapdic[alphaword].append(line)
topans = sorted((len(mapdic[key]), key) for key in mapdic.keys())[-3:]
#top 3 answers
for key, value in topans: #
finalres.append(mapdic[value])
print finalres
Here is a working, cleaned up version:
from heapq import nlargest
from collections import defaultdict
def anagrams(words, top=None):
key2words = defaultdict(set)
for word in words:
word = word.strip()
key = ''.join(sorted(word))
key2words[key].add(word)
if top is None:
return sorted(key2words.itervalues(), key=len, reverse=True)
else:
return nlargest(top, key2words.itervalues(), key=len)
if __name__ == '__main__':
wordlist = ['live', 'evil', 'one', 'nose', 'vile', 'neo']
for words in anagrams(wordlist,2):
print words
By the way, try to generalize your functions (and rest of the code for
that matter) so that it can be reused easily. For example, hardcoding
the input file name in the function's body is usually undesirable.
Similarly for other constants like 'get top 3 answers'; it doesn't
cost you anything to replace 3 with 'top' and pass it as an argument
(or set it as default top=3 if that's the default case).
HTH,
George
--
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Re: Find more than one error at once
On Sat, May 10, 2008 at 8:38 AM, Joseph Turian [EMAIL PROTECTED] wrote: Is it possible to coax python to find more than one error at once? Thanks, Joseph -- http://mail.python.org/mailman/listinfo/python-list Sounds like you want to catch and log exceptions. -- http://mail.python.org/mailman/listinfo/python-list
Re: Find more than one error at once
Joseph Turian [EMAIL PROTECTED] writes: Is it possible to coax python to find more than one error at once? Definitely, write unit tests and run the whole suite URL:http://www.python.org/doc/lib/module-unittest. All errors found by your unit test suite will be reported. If you mean the Python parser and compiler, then the answer to this is in the Zen of Python: In the face of ambiguity, refuse the temptation to guess. An error in parsing or compiling leaves no clear unambiguous path for finding further parsing or compilation errors. -- \ It's a good thing we have gravity or else when birds died | `\ they'd just stay right up there. Hunters would be all | _o__) confused. -- Steven Wright | Ben Finney -- http://mail.python.org/mailman/listinfo/python-list
Re: The Importance of Terminology's Quality
George Neuner wrote: On Thu, 8 May 2008 22:38:44 -0700, Waylen Gumbal [EMAIL PROTECTED] wrote: Not everyone follows language-neutral groups (such as comp,programming as you pointed out), so you actually reach more people by cross posting. This is what I don't understand - everyone seems to assume that by cross posting, one intends on start a flamefest, when in fact most such flamefests are started by those who cannot bring themselves to skipping over the topic that they so dislike. The problem is that many initial posts have topics that are misleading or simplistic. Often an interesting discussion can start on some point the initial poster never considered or meant to raise. Is this not a possibility for any topic, whether it's cross-posted or not? -- wg -- http://mail.python.org/mailman/listinfo/python-list
firefox add-on to grab python code handily?
I encounter a fair number of small Python scripts online, and usually try them out by copying them to the clipboard, pasting into Notepad, saving them, and either running them directly or opening them in IDLE. And so I was wondering if anyone knew of an extension/add-on/script for Firefox which would allow a way to do something like this: user highlights Python code on a webpage right clicks selects a menu item, Save as Python code FF pops up a filename dialog or popup for filename (and, though I don't know if this is possible, runs Python code) Not an important thing by any means, but it would be a nice convenience. I know there are similar add-ons in FF for grabbing highlighted text and saving, but they are not good, as they don't seem to preserve line breaks properly or append the .py extension, etc. I've Googled for this and so far it seems it doesn't exist. Anyone know? -- http://mail.python.org/mailman/listinfo/python-list
Re: anagram finder / dict mapping question
Kam-Hung Soh [EMAIL PROTECTED] writes: On Sat, 10 May 2008 07:19:38 +1000, [EMAIL PROTECTED] wrote: What would be the best method to print the top results, the one's that had the highest amount of anagrams?? Create a new histogram dict? You can use the max() function to find the biggest list of anagrams: top_results = max(anagrams.itervalues(), key=len) -- Arnaud That is the biggest list of anagrams, what if I wanted the 3 biggest lists? Is there a way to specific top three w/ a max command?? Built-in max() function only returns one result. My solution is to make a sorted list and return last three items: sorted((len(anagrams[key]), key) for key in anagrams.keys())[-3:] Using the key= parameter of sorted() beats explicit DSU: sorted(anagrams.itervalues(), key=len)[-3:] Or even sorted(anagrams.itervalues(), key=len, reverse=True)[:3] -- Arnaud -- http://mail.python.org/mailman/listinfo/python-list
Pythonicity of some algorithms
Hi list. I have 2 questions about the Pythonicity of some algorithms. One question is about generator usage, the other is about producer and consumer threads GENERATOR QUESTION Usually for generators, the usage is like this: for var in generator(): do_something(var) I sometimes have cases where I want to use a generator, but I don't want to stall the main program if the generator function doesn't have any new data for me (maybe it's retrieving data from a device, but I want to do other things with the same device if there isn't any data yet). So currently, some of my code looks something like this: def get_serial_data(): while True: block = request_a_packet_from_serial_device() # Get some raw data parsed_list = parse_block(block) # Extract a list of records from the packet if parsed_list: # The record contains 1 or more records for record in parse_list: yield record else: # Sometimes there aren't any records in the packet yield None def thread_function_for_handling_serial_device(): record_iter = iter(get_serial_data()) while True: record = record_iter.next() if record: handle_record() # eg: add to a queue for the main thread to process other_serial_logic1() other_serial_logic2() other_serial_logic3() This works for me. But I'd like to know if this is considered Pythonic, and if there are other, better ways of doing the above in Python. PRODUCER AND CONSUMER THREAD QUESTION In some of my Python apps I use the producer/consumer model, where the producer and consumer threads communicate through Queues. Usually code (in the consumer thread function) looks something like this: def consumer_thread(): while True: record = some_queue.get() process_record(record) In some cases I'd like to do something unusual to threads consuming a queue - interrupt them, make them terminate, etc. The problem is that a lot of the time it's locking, waiting for a record from some_queue.get() A few things I've considered: 1) Add a timeout to some_queue.get(), so the loop has a chance to do other things while waiting for new records. This is problematic because most of the time there isn't other things for the thread to do. Also, it won't be able to respond immediately to those events. 2) Add special values to the queue, the purpose of which is to notify the consumers. This is problematic when you have multiple consumers. You have to add the exact correct number of 'interrupt' objects to the queue. 3) Make a custom thread-safe queue class, with an 'interrupt_get' method. When your app calls queue.interrupt_get(), all threads currently locking on a queue.get() will continue, but with a GetInterrupted exception thrown. Perhaps there is some other Python threading idiom I should be using in this case. Any suggestions? David. -- http://mail.python.org/mailman/listinfo/python-list
Re: Pythonicity of some algorithms
This works for me. But I'd like to know if this is considered Pythonic, and if there are other, better ways of doing the above in Python. From the Python point of view, it's fine. However, it uses busy-wait, which I consider bad style (in any language). 3) Make a custom thread-safe queue class, with an 'interrupt_get' method. When your app calls queue.interrupt_get(), all threads currently locking on a queue.get() will continue, but with a GetInterrupted exception thrown. That's what I would do. I'd use the existing Queue class as a base class, though, rather than starting from scratch. Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: implementation for Parsing Expression Grammar?
Hi, Finite automata works for nested things. http://en.wikipedia.org/wiki/Automata_theory -- Lars Rune Nøstdal http://nostdal.org/ -- http://mail.python.org/mailman/listinfo/python-list
Re: PyXml
Stefan Behnel wrote: Martin v. Löwis wrote: Can anyone recommend a Python validating parser that validates vs Xml Schema? The libxml bindings for Python can do that. ... although the OP will likely prefer using lxml, where it's three lines of Python (ok, plus an import), compared to quite a bit of code in the official libxml2 bindings. http://codespeak.net/lxml Stefan -- http://mail.python.org/mailman/listinfo/python-list Stefan, Martin, Thanks for your replies. Kev -- http://mail.python.org/mailman/listinfo/python-list
Re: Pythonicity of some algorithms
On May 10, 5:21 am, Martin v. Löwis [EMAIL PROTECTED] wrote: This works for me. But I'd like to know if this is considered Pythonic, and if there are other, better ways of doing the above in Python. From the Python point of view, it's fine. However, it uses busy-wait, which I consider bad style (in any language). 3) Make a custom thread-safe queue class, with an 'interrupt_get' method. When your app calls queue.interrupt_get(), all threads currently locking on a queue.get() will continue, but with a GetInterrupted exception thrown. That's what I would do. I'd use the existing Queue class as a base class, though, rather than starting from scratch. Regards, Martin Did you follow the links to Dev-C++? It rules house. I have drizzle.c compiling in Windows GDI and SDL. I'm poised to double-time Dev-C++ and Windows GDI, if double-tasking is on the market. Credit up... what's standard? -- http://mail.python.org/mailman/listinfo/python-list
Re: slicing lists
On May 9, 3:17 pm, [EMAIL PROTECTED] wrote: On May 9, 10:11 am, Yves Dorfsman [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] wrote: The only thing is, is there is another natural meaning to [a,b:c]. Counting grids on the diagonals, the rational set is well defined: 0: 0, 0 1: 1, 0 2: 0, 1 3: 2, 0 4: 1, 1 5: 0, 2 6: 3, 0 7: 2, 1 ... Thencefore ( 2, 0 ) : ( 3, 0 ) is well defined. Thencefore, a,b:c,d is not; x[a,b:c,d]= x[a]+ x[b:c]+ x[d]. I'm not sure what you mean here. Could you give me a simple piece of code to show an example ? Yves.http://www.SollerS.ca-Hide quoted text - - Show quoted text - Yves, sadly, simple piece of code is not the writer's forte. I was merely advising against leaping in to syntax additions, changes even. The point was, even though a,b:c,d is shown ill-defined, a,b:c may not be.- Hide quoted text - - Show quoted text - Now: In the case of enumerate( rationals ), list slicing can be plenty fine. Any use to the dirational enumerate? -- http://mail.python.org/mailman/listinfo/python-list
Re: People still using Tkinter?
On May 10, 1:38 am, Marc 'BlackJack' Rintsch [EMAIL PROTECTED] wrote: On Sat, 10 May 2008 00:20:33 -0500, Kenneth McDonald wrote: Any guesses as to how many people are still using Tkinter? And can anyone direct me to good, current docs for Tkinter? AFAIK `Tkinter` hasn't changed much over time, so old documentation is still current. Ciao, Marc 'BlackJack' Rintsch Get synchronizing into wx. CallAfter and CallLater both pull too hard, but I didn't write it for money. How are specs doing on coming down? Window size is important. Does anyone else bounce around resizability either? Ciao. -- http://mail.python.org/mailman/listinfo/python-list
Re: Find more than one error at once
Joseph Turian schrieb: Is it possible to coax python to find more than one error at once? What kind of errors? Syntax-errors? Then use one of the python source code analyzers, such as pylint or pychecker. Diez -- http://mail.python.org/mailman/listinfo/python-list
Authoring SOAP and WSDL
I would like to write SOAP services in python, and have an environment that will then generate a matching WSDL for me automatically. Does such a thing exist in python? Thanks in advance. Ken. -- http://mail.python.org/mailman/listinfo/python-list
Re: People still using Tkinter?
2008/5/10 Kenneth McDonald [EMAIL PROTECTED]: Any guesses as to how many people are still using Tkinter? And can anyone direct me to good, current docs for Tkinter? I will say no to the first question. Now about the second question.. there are these links you may find interesting: An Introduction to Tkinter -- http://www.pythonware.com/library/tkinter/introduction/index.htm Tkinter reference: a GUI for Python -- http://infohost.nmt.edu/tcc/help/pubs/tkinter/index.html There is also a book, http://www.manning.com/grayson/ and a wiki, http://tkinter.unpythonic.net/wiki/ Also, stdlib docs at http://docs.python.org/lib/module-Tkinter.html And there is a mail list too. Thanks, Ken -- http://mail.python.org/mailman/listinfo/python-list -- -- Guilherme H. Polo Goncalves -- http://mail.python.org/mailman/listinfo/python-list
Re: The Importance of Terminology's Quality
Waylen Gumbal wrote: George Neuner wrote: On Thu, 8 May 2008 22:38:44 -0700, Waylen Gumbal [EMAIL PROTECTED] wrote: Not everyone follows language-neutral groups (such as comp,programming as you pointed out), so you actually reach more people by cross posting. This is what I don't understand - everyone seems to assume that by cross posting, one intends on start a flamefest, when in fact most such flamefests are started by those who cannot bring themselves to skipping over the topic that they so dislike. The problem is that many initial posts have topics that are misleading or simplistic. Often an interesting discussion can start on some point the initial poster never considered or meant to raise. Is this not a possibility for any topic, whether it's cross-posted or not? You guys are off topic. None of the million groups to which this message was posted are about netiquette. -- Lew -- http://mail.python.org/mailman/listinfo/python-list
Simple question
I use to write code with PHP. To ran script width PHP I need to open new file inside my WWW directory and name it somethin.php and then to write my script inside ?php? tags how can i ran script with python thenks -- http://mail.python.org/mailman/listinfo/python-list
Re: Simple question
Gandalf wrote: how can i ran script with python It depends on your web server configuration. To get your web server execute Python code, there are several alternatives like * CGI * FastCGI * mod_python Regards, Björn -- BOFH excuse #93: Feature not yet implemented -- http://mail.python.org/mailman/listinfo/python-list
Re: Simple question
On May 10, 2:36 pm, Bjoern Schliessmann usenet- [EMAIL PROTECTED] wrote: Gandalf wrote: how can i ran script with python It depends on your web server configuration. To get your web server execute Python code, there are several alternatives like * CGI * FastCGI * mod_python Regards, Björn -- BOFH excuse #93: Feature not yet implemented my server is my computer and all i did way to install python on it. -- http://mail.python.org/mailman/listinfo/python-list
Re: How to kill Python interpreter from the command line?
Jean-Paul Calderone [EMAIL PROTECTED] wrote: (Ctrl+Z which sends SIGSTOP and _cannot_ be masked or otherwise ignored) Bzzt! Ctrl-Z causes a SIGTSTP to be sent, not SIGSTOP, and SIGTSTP can be both caught, ignored and masked. -- Thomas Bellman, Lysator Computer Club, Linköping University, Sweden You cannot achieve the impossible without ! bellman @ lysator.liu.se attempting the absurd. ! Make Love -- Nicht Wahr! -- http://mail.python.org/mailman/listinfo/python-list
Re: Simple question
Gandalf wrote: my server is my computer and all i did way to install python on it. But what web server program are you using? Apache? IIS? Lighttpd? -- -- http://mail.python.org/mailman/listinfo/python-list
Re: firefox add-on to grab python code handily?
CM wrote: I encounter a fair number of small Python scripts online, and usually try them out by copying them to the clipboard, pasting into Notepad, saving them, and either running them directly or opening them in IDLE. And so I was wondering if anyone knew of an extension/add-on/script for Firefox which would allow a way to do something like this: user highlights Python code on a webpage right clicks selects a menu item, Save as Python code FF pops up a filename dialog or popup for filename (and, though I don't know if this is possible, runs Python code) Not an important thing by any means, but it would be a nice convenience. I know there are similar add-ons in FF for grabbing highlighted text and saving, but they are not good, as they don't seem to preserve line breaks properly or append the .py extension, etc. I've Googled for this and so far it seems it doesn't exist. Anyone know? Since most of us keep Idle or some other Python IDE open nearly 100% of the time we just copy from webpage, paste into new Python document, and run in the IDE. While you could clearly write a plug-in for FF to achieve this, IMHO I doubt many people would actually use it. -Larry -- http://mail.python.org/mailman/listinfo/python-list
Re: implementation for Parsing Expression Grammar?
On 10 Mai, 07:52, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: In the past weeks i've been thinking over the problem on the practical problems of regex in its matching power. For example, often it can't be used to match anything of nested nature, even the most simple nesting. It can't be used to match any simple grammar expressed by BNF. Some rather very regular and simple languages such as XML, or even url, email address, are not specified as a regex. Well formed XML cannot be fully specified within BNF as well because it is context sensitive: in order to recognize a tag/endtag pair one has to maintain a stack. That's not a big deal in practice if one wants to write an XML parser but one can't use an arbitrary LL or LR parser generator to produce a parse tree representing the XML. -- http://mail.python.org/mailman/listinfo/python-list
Re: Simple question
Gandalf wrote: On May 10, 2:36 pm, Bjoern Schliessmann usenet- [EMAIL PROTECTED] wrote: Gandalf wrote: how can i ran script with python It depends on your web server configuration. To get your web server execute Python code, there are several alternatives like * CGI * FastCGI * mod_python Regards, Björn -- BOFH excuse #93: Feature not yet implemented my server is my computer and all i did way to install python on it. You might want to read a bit more about Python and how it can be used for web programming. Because your question is not easily answered. I suggest the following at least: http://wiki.python.org/moin/PythonVsPhp (especially the Compared as Web Development Frameworks section) http://wiki.python.org/moin/WebProgramming Good luck. --irmen -- http://mail.python.org/mailman/listinfo/python-list
Re: People still using Tkinter?
I like New Mexico Tech's site as well. Also, take a look at the PMW extension for additional widgets, and TkTable and/or TableListWrapper. http://infohost.nmt.edu/tcc/help/pubs/tkinter/ -- http://mail.python.org/mailman/listinfo/python-list
Now, as for the jokes: Python!
Dear Monty, Grail This. The grail is unarmed and floating. Stop posting the newsgroup. Python is Monty Python. In the sense of identity ascription, of course. Trivially not, A Bartender. -- http://mail.python.org/mailman/listinfo/python-list
Re: Mathematics in Python are not correct
In article [EMAIL PROTECTED], Terry Reedy [EMAIL PROTECTED] wrote: Lou Pecora [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] | In article [EMAIL PROTECTED], | Terry Reedy [EMAIL PROTECTED] wrote: | | Luis Zarrabeitia [EMAIL PROTECTED] wrote in message | news:[EMAIL PROTECTED] | | Btw, there seems to be a math problem in python with exponentiation... | | 0**0 | | 1 | | That 0^0 should be a nan or exception, I guess, but not 1. | | a**b is 1 multiplied by a, b times. 1 multiplied by 0 no times is 1. | But there are unenlighted people who agree with you ;-) | Wikipedia has a discussion of this. | | tjr | | I like that argument better. But... | | I've also heard the very similar a**b is a multiplied by a b-1 times. Me too, in school, but *that* definition is incomplete: it excludes b=0 and hence a**0 for all a. It was the best people could do before 0 was known. But 0 was introduced to Europe just over 800 years ago ;-) [cut some interesting examples] Yes, I was also thinking about the b=0 case and then the case when b0. If you solve the b0 case, you solve the b=0 case for a !=0. Define a**b= a multiplied by 1/a |b-1| times when b0. Then for b=0 we get a*(1/a)=1. Of course, I can avoid all this mathematical dancing around by using some of the other simpler definitions like the original one. :-) -- -- Lou Pecora -- http://mail.python.org/mailman/listinfo/python-list
Re: People still using Tkinter?
2008/5/10 Zentrader [EMAIL PROTECTED]: I like New Mexico Tech's site as well. Also, take a look at the PMW extension for additional widgets, and TkTable and/or TableListWrapper. http://infohost.nmt.edu/tcc/help/pubs/tkinter/ There is also Tile, or Ttk since Tk 8.5, if you are interested in extensions too. Apparently there are three Tile wrappers now, two are incomplete (sorry for saying that): http://bruno.thoorens.free.fr/ttk.html -- Missing Treeview, big part of ttk styling, maybe other things and it is not only a ttk wrapper (there are other things besides it) http://bugs.python.org/file10010/Tile.py -- Missing several methods in Treeview, big part of ttk styling and maybe something else. And there is also one I'm doing, that I expect to be complete: http://gpolo.ath.cx:81/projects/ttk_to_tkinter/ Documentation and samples are still lacking, but I'm working on them. And I haven't tested it under Windows, so I invite you all to test it. Regards, -- -- Guilherme H. Polo Goncalves -- http://mail.python.org/mailman/listinfo/python-list
Re: How to call a file
Chris Sprinkles wrote:
I'm still having trouble with calling a text file and I know its so
simple here is the code
work = open('C:\Documents and Settings\Administrator\My
Documents\Chris\Python\Python\work.txt', 'r')
for line in work.txt:
print line
-
Ok so I know that the directory is right cause I'm not a complete
idiot but I keep getting an error? What am I missing here?
-Chris-
--
http://mail.python.org/mailman/listinfo/python-list
First of all, some terminology: You are not *calling* a file, you are
*opening* it or reading.
Once you *open* the file, you store the resulting file object in a
variable named work, then to use that object to request a line, thus:
for line in work:
print line
Hint: When you say I keep getting an error, you really have not
provided mush useful information. In the future, when you get an
error, and you want help, spend the time to post the error message and
traceback along with your question. In this case, the problem was
trivially easy to spot, but you'll get past these trivial problems
soon. Then you'll be more likely to find volunteers who will spend time
to help *if* you spend the time to provide useful information.
Gary Herron
--
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Re: People still using Tkinter?
Kenneth McDonald wrote: Any guesses as to how many people are still using Tkinter? And can anyone direct me to good, current docs for Tkinter? Thanks, Ken I develop Tk applications commercially on Mac OS X, using Tcl and Python. Here's a screenshot of my Python app: http://www.codebykevin.com/phynchronicity-running.png This app is built on Python 2.5.1 and Tk 8.5.0. Tk 8.5 has a huge number of improvements over older versions of Tk: http://www.tkdocs.com/resources/backgrounder.html Most importantly, Tk 8.5 has a themed widget set that allows for platform-native appearance on Windows and Mac (not emulated, but hooking into system API's). The themed widget set also adds a lot of new widgets, such as combobox, tree, and others. The older widget set is still available as well and they can be freely matched. Tk also has a lot of lightweight, script-level widget libraries that can also enhance the appearance and usability of your app. My own app uses widgets from Tk's traditional set, the new Tile/ttk set, the Tabelist widget, and the BWidget widget library. It uses the following Python wrappers for these widgets: http://tkinter.unpy.net/wiki/TileWrapper http://tkinter.unpy.net/wiki/TableListTileWrapper http://tkinter.unpythonic.net/bwidget/ It also uses a few private wrappers/custom widgets. In addition to the Python-specifc resources that others have provided, here's a new site that documents the latest-and-greatest Tk techniques, including Tile/ttk: http://www.tkdocs.com/ The developer of this site is mainly interest in Tcl and Ruby, so examples of those are provided--I may provide some Python examples at some point. But there should be enough code snippets there for you to get started, especially if you already have some experience with Tk/Tkinter. Tk still has some limitations, including a lack of cross-platform printing support (the canvas widget generates postscript, but that's not enough anymore) and an incomplete cross-platform drag-and-drop mechanism (works fine on Windows, it's buggy on *NIx because Xdnd is so inconsistent, and it was never developed for OS X). If you absolutely need these features, look at wxPython or PyQt. But coming to Python from a Tcl background, I'm very comfortable with Tk--it is lightweight, extremely flexible, and (as I hope you can see from my screenshot) it's possible to do sophisticated user interfaces with it. It fits my brain much better than wxPython, for instance. And the long effort by Tk's developers to modernize its appearance has finally paid off, I think. Hope that helps, Kevin -- Kevin Walzer Code by Kevin http://www.codebykevin.com -- http://mail.python.org/mailman/listinfo/python-list
Re: People still using Tkinter?
Guilherme Polo wrote: 2008/5/10 Zentrader [EMAIL PROTECTED]: I like New Mexico Tech's site as well. Also, take a look at the PMW extension for additional widgets, and TkTable and/or TableListWrapper. http://infohost.nmt.edu/tcc/help/pubs/tkinter/ There is also Tile, or Ttk since Tk 8.5, if you are interested in extensions too. Apparently there are three Tile wrappers now, two are incomplete (sorry for saying that): http://bruno.thoorens.free.fr/ttk.html -- Missing Treeview, big part of ttk styling, maybe other things and it is not only a ttk wrapper (there are other things besides it) http://bugs.python.org/file10010/Tile.py -- Missing several methods in Treeview, big part of ttk styling and maybe something else. And there is also one I'm doing, that I expect to be complete: http://gpolo.ath.cx:81/projects/ttk_to_tkinter/ Documentation and samples are still lacking, but I'm working on them. And I haven't tested it under Windows, so I invite you all to test it. Regards, I'm the maintainer of Tile.py. It may well be incomplete, as it was first developed by Martin Franklin a couple of years ago and I've been modifying it as my own needs require. So you're doing your own implementation of ttk in Tkinter as a Google Summer of Code Project? Wonderful! Are you planning on submitting it for including in Tkinter's core, as I did? If yours proves to be the better implementation I'll gladly withdraw mine, as I'm not sure I have time to overhaul it extensively. I'll follow your progress with interest! --Kevin -- Kevin Walzer Code by Kevin http://www.codebykevin.com -- http://mail.python.org/mailman/listinfo/python-list
Re: People still using Tkinter?
2008/5/10 Kevin Walzer [EMAIL PROTECTED]: Guilherme Polo wrote: 2008/5/10 Zentrader [EMAIL PROTECTED]: I like New Mexico Tech's site as well. Also, take a look at the PMW extension for additional widgets, and TkTable and/or TableListWrapper. http://infohost.nmt.edu/tcc/help/pubs/tkinter/ There is also Tile, or Ttk since Tk 8.5, if you are interested in extensions too. Apparently there are three Tile wrappers now, two are incomplete (sorry for saying that): http://bruno.thoorens.free.fr/ttk.html -- Missing Treeview, big part of ttk styling, maybe other things and it is not only a ttk wrapper (there are other things besides it) http://bugs.python.org/file10010/Tile.py -- Missing several methods in Treeview, big part of ttk styling and maybe something else. And there is also one I'm doing, that I expect to be complete: http://gpolo.ath.cx:81/projects/ttk_to_tkinter/ Documentation and samples are still lacking, but I'm working on them. And I haven't tested it under Windows, so I invite you all to test it. Regards, I'm the maintainer of Tile.py. It may well be incomplete, as it was first developed by Martin Franklin a couple of years ago and I've been modifying it as my own needs require. So you're doing your own implementation of ttk in Tkinter as a Google Summer of Code Project? Wonderful! Are you planning on submitting it for including in Tkinter's core, as I did? Thanks ;) And, yes Kevin, I'm planning to submit it for inclusion into Tkinter's core. If yours proves to be the better implementation I'll gladly withdraw mine, as I'm not sure I have time to overhaul it extensively. I'll follow your progress with interest! Thanks for support it, and sorry for saying yours was incomplete. I wasn't trying to sell my version by doing that, was just trying to say there were some point on doing another wrapper. I also noticed that there is some problem in getting Martin Franklin to fill the contributors agreement, that was the second point on doing this wrapper. --Kevin -- Kevin Walzer Code by Kevin http://www.codebykevin.com Regards, -- -- Guilherme H. Polo Goncalves -- http://mail.python.org/mailman/listinfo/python-list
Re: People still using Tkinter?
I am, but still isn't the word, I just started. Good, *complete* docs seem to be hard to find, but using a combination of the free resources and going back and forth between them seems to work all right so far. -Chuckk On Sat, May 10, 2008 at 8:20 AM, Kenneth McDonald [EMAIL PROTECTED] wrote: Any guesses as to how many people are still using Tkinter? And can anyone direct me to good, current docs for Tkinter? Thanks, Ken -- http://mail.python.org/mailman/listinfo/python-list -- http://www.badmuthahubbard.com -- http://mail.python.org/mailman/listinfo/python-list
Re: People still using Tkinter?
Guilherme Polo wrote: Thanks ;) And, yes Kevin, I'm planning to submit it for inclusion into Tkinter's core. Excellent. I hope your effort is successful. Thanks for support it, and sorry for saying yours was incomplete. I wasn't trying to sell my version by doing that, was just trying to say there were some point on doing another wrapper. I also noticed that there is some problem in getting Martin Franklin to fill the contributors agreement, that was the second point on doing this wrapper. No offense taken. Martin is pretty busy these days and doesn't have time to work on it further; frankly, I'm not sure I'd have time if a lot of changes were requested. So if your package proves to be the best, great! I'll switch over my own apps to it. Good luck! Kevin -- Kevin Walzer Code by Kevin http://www.codebykevin.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Am I missing something with Python not having interfaces?
On May 9, 1:53 pm, Daniel Marcel Eichler [EMAIL PROTECTED] wrote: Am Freitag 09 Mai 2008 10:19:45 schrieb Bruno Desthuilliers: very often sees do-nothing catch-all try/catch blocks in Java - which is way worse than just letting the exception propagate. I find all this totally pointless, because there's just no way for a compiler to check if your code is logically correct. But it's enough if the called method exists and returns the correct type. At least it prevents a crash. The application has already failed. You'd prefer it silently do the wrong thing than get an explicit error message and stop? That's the point. Interfaces garantee that a duck is a duck, an not only a chicken that quack. Who cares if it's a chicken as long as it quacks when you ask her to ? Now *This* is the whole point of chicken^Mduck typing, isn't it ?-) Ducks can also swim and fly. And if you need a really duck, If you're code expects something that quacks, swims and flies, anything that quacks, swims and flies is ok. You just don't care if it's a duck or a flying whale with a quacking device tied to it. Not the point. It really is. They're only going to give you something they expect to work. They might occasionally make a mistake and give you garbage, but it's not worth the effort of trying to catch it early. -- http://mail.python.org/mailman/listinfo/python-list
Now what!?
Grrr
I'm following A Byte of Python and into the while loops chap. I cp/paste
while.py to a file and give 777 perms. I mv while.py to while and run it
(./while)
as a standalone script. I get errors.
Here is the script:
while.py
http://www.ibiblio.org/swaroopch/byteofpython/read/while-statement.html
When I run it as.
$ python while
.it works perfect. But, if I run it simply as.
$ ./while
.I get this:
$ ./while
number: illegal number: =
./while: line 6: running: command not found
./while: line 9: syntax error near unexpected token ('
./while: line 9: guess = int(raw_input('Enter an integer : '))'
Why does it work one way and not the other. If I run the simple hello world
script the same way ($ ./helloworld) and it works fine. Same shebang, same
dir, same permission, etc. I even meticulously indented everything
perfectly by hand. What am I missing?
BTW, anyone know a better cli news client/editor combo than slrn/jed (don't
even think vi!)? When I cp/past code (or most anything else) to jed, all
the lines become stair-stepped. This is no biggie for a most stuff, but for
idented code, it's unacceptable.
nb
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Re: Now what!?
notbob schrieb:
Grrr
I'm following A Byte of Python and into the while loops chap. I cp/paste
while.py to a file and give 777 perms. I mv while.py to while and run it
(./while)
as a standalone script. I get errors.
Here is the script:
while.py
http://www.ibiblio.org/swaroopch/byteofpython/read/while-statement.html
When I run it as.
$ python while
.it works perfect. But, if I run it simply as.
$ ./while
.I get this:
$ ./while
number: illegal number: =
./while: line 6: running: command not found
./while: line 9: syntax error near unexpected token ('
./while: line 9: guess = int(raw_input('Enter an integer : '))'
Why does it work one way and not the other. If I run the simple hello world
script the same way ($ ./helloworld) and it works fine. Same shebang, same
dir, same permission, etc. I even meticulously indented everything
perfectly by hand. What am I missing?
I'm pretty sure you misse the correct shebang - the shell tries to
execute your script as shell-script, instead of invoking the interpreter.
Diez
--
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Re: The Importance of Terminology's Quality
Lew [EMAIL PROTECTED] writes: You guys are off topic. None of the million groups to which this message was posted are about netiquette. Netiquette has come up at one point or another in pretty much every group I've ever read. It's pretty much a universal meta-topic. sherm-- -- My blog: http://shermspace.blogspot.com Cocoa programming in Perl: http://camelbones.sourceforge.net -- http://mail.python.org/mailman/listinfo/python-list
Re: People still using Tkinter?
I am, but still isn't the word, I just started. Good, *complete* docs seem to be hard to find, but using a combination of the free resources and going back and forth between them seems to work all right so far. IMO, the trick really is to also have a Tk documentation around. If you need to find out what option is supported by what widget, there isn't really much point in duplicating that information in Tkinter, IMO - the Tk documentation has it all. Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
Re: Now what!?
Diez B. Roggisch escribió:
notbob schrieb:
Grrr
I'm following A Byte of Python and into the while loops chap. I cp/paste
while.py to a file and give 777 perms. I mv while.py to while and run
it (./while)
as a standalone script. I get errors.
Here is the script:
while.py
http://www.ibiblio.org/swaroopch/byteofpython/read/while-statement.html
When I run it as.
$ python while
.it works perfect. But, if I run it simply as.
$ ./while
.I get this:
$ ./while
number: illegal number: =
./while: line 6: running: command not found
./while: line 9: syntax error near unexpected token ('
./while: line 9: guess = int(raw_input('Enter an integer : '))'
Why does it work one way and not the other. If I run the simple hello
world
script the same way ($ ./helloworld) and it works fine. Same shebang,
same
dir, same permission, etc. I even meticulously indented everything
perfectly by hand. What am I missing?
I'm pretty sure you misse the correct shebang - the shell tries to
execute your script as shell-script, instead of invoking the interpreter.
Diez
--
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Add #!/path/to/bin/python on the first line of your script.
Also should work with:
#!/usr/bin/env python
--
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Orlando Florida Python Tutor Needed
I will pay anyone for a face-to-face tutoring in the Orlando Florida area. I will pay $20.00 per hour (minimum 2 hours needed). What I need are lessons in Decorators and Class methods. If I can walk away with at least 5 lessons taught in both subjects I will be happy to offer an additional $20.00. If you are interested in this offer feel free to either reply through email OR here on this thread. There are no string attached, catches, etc. I need to learn and if you can teach well, I will be happy to learn. Best Regards Victor B. Gonzalez -- http://mail.python.org/mailman/listinfo/python-list
Re: Simple question
Thanks guys I think you miss understood me. i have been mining to use python to create a none web application. And i found out that i can ran python scripts by calling them from CMD or just raning them from windows -- http://mail.python.org/mailman/listinfo/python-list
Re: Now what!?
On 2008-05-10, Diez B. Roggisch [EMAIL PROTECTED] wrote: notbob schrieb: script the same way ($ ./helloworld) and it works fine. Same shebang, same dir, same permission, etc. I'm pretty sure you misse the correct shebang - Sorry. Both exactly the same. I checked 5 times. helloworld shebang: #!/usr/bin/python while shebang: #!/usr/bin/python (above yanked from respective scripts) nb -- http://mail.python.org/mailman/listinfo/python-list
Re: Now what!?
On 10 май, 21:22, notbob [EMAIL PROTECTED] wrote: On 2008-05-10, Diez B. Roggisch [EMAIL PROTECTED] wrote: notbob schrieb: script the same way ($ ./helloworld) and it works fine. Same shebang, same dir, same permission, etc. I'm pretty sure you misse the correct shebang - Sorry. Both exactly the same. I checked 5 times. helloworld shebang: #!/usr/bin/python while shebang: #!/usr/bin/python (above yanked from respective scripts) nb Shebang is certainly broken, possible causes: 1. Wrong line endings (should be \n) 2. Whitespace before the shebang -- Ivan -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie to python --- why should i learn !
In article [EMAIL PROTECTED], Gary Herron [EMAIL PROTECTED] wrote: With Python, you can program with a smile on your face. +1 QOTW (Truly, when I found Python, programming became fun again.) Again? Looking back over the years, after I learned Python I realized that I never really had enjoyed programming before. -- Aahz ([EMAIL PROTECTED]) * http://www.pythoncraft.com/ Help a hearing-impaired person: http://rule6.info/hearing.html -- http://mail.python.org/mailman/listinfo/python-list
list object
my manual contain chapter about lists with python. when i try to copy paste : li = [a, b, mpilgrim, z, example] (1) it i get this errore: TypeError: 'list' object is not callable i was wondering if their is any special module I should import before i use this function i know i ask foolish questions it's my first day with python and i have experience only with PHP and javascript, so please be patient thanks -- http://mail.python.org/mailman/listinfo/python-list
Re: list object
On 5/10/08, Gandalf [EMAIL PROTECTED] wrote: my manual contain chapter about lists with python. when i try to copy paste : li = [a, b, mpilgrim, z, example] (1) it i get this errore: TypeError: 'list' object is not callable i was wondering if their is any special module I should import before i use this function i know i ask foolish questions it's my first day with python and i have experience only with PHP and javascript, so please be patient thanks -- http://mail.python.org/mailman/listinfo/python-list Remove the (1) -- http://mail.python.org/mailman/listinfo/python-list
Re: Now what!?
On 2008-05-10, Ivan Illarionov [EMAIL PROTECTED] wrote: Shebang is certainly broken, possible causes: 1. Wrong line endings (should be \n) Nope. Not it. 2. Whitespace before the shebang BINGO! we have a winner. ;) I thought for sure that was not correct. No white space before the sheba Wait a minute! Howzabout a blank line above the shebang? D0H!! These are the minute details that bedevil the poor noob. I've read dozens of tutorials on different prog langs and have never read a single thing on white space or blank lines preceding a shebang. Till now. I always get frustrated and give up on learning programming, not really caring much for coding, anyway. But, dammit, I'm gonna stick with it this time. I'll learn python if it kills me! that is, if you folks can stand all my dumb questinons. ;) Thank you, Ivan, and other repondents. nb back to while loops -- http://mail.python.org/mailman/listinfo/python-list
Re: multiple Python versions, but on Windows (how to handle registry updates)
Banibrata Dutta [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] | given that I already have Python2.5 installed will install Python2.4, will | copying the ../Lib/site-packages/ from 2.5 into 2.4's, work ? | i think the answer is no, but still asking. is it package specific ? If a particular distribution consists of only Python code (no C dll's) and that code uses no 2.5 features and does not depend on any other 2.5 changes, then it should work with 2.4. Otherwise -- http://mail.python.org/mailman/listinfo/python-list
Is there a PyPI API?
Hi,
I am experimenting on creating a GUI wrapper for easy_install and I
would like to be able to allow the user the browse PyPI topically.
However, I am having some trouble figuring out how to get the
information in a topical manner.
I can get the list of classifiers easily using urllib2 like so:
def getPyPiClassifiers():
print 'Get list of Topics from PyPI...'
url = 'http://pypi.python.org/pypi?%3Aaction=list_classifiers'
res = urllib2.urlopen(url)
page = res.read()
And there's a light-weight list of all the packages on PyPI here:
http://pypi.python.org/simple/
I just can't figure out how to get the metadata, I guess. I found Paul
Boddies SGMLParser example (http://www.boddie.org.uk/python/HTML.html)
which can get me some URLs, but what I really need is some kind of
dict of tuples or lists like this:
{'Framework':(('Buildout', 'bazaarrecipe', 'Buildout recipe for
Bazaar'),
('Buildout', 'buildout_script', 'zc.buildout
recipes for generating script and conf files from templates.')
)}
Any ideas on how best to approach this would be great. I'm still
learning HTML/XML parsing techniques and am having trouble wrapping my
mind around it.
Thanks!
Mike
--
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Re: list object
member thudfoo [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] | On 5/10/08, Gandalf [EMAIL PROTECTED] wrote: | my manual contain chapter about lists with python. when i try to copy | paste : | | li = [a, b, mpilgrim, z, example] (1) | | | it i get this errore: | | TypeError: 'list' object is not callable | Remove the (1) The '(1)' was almost certainly an 'equation number' or 'line label' added so the author could refer it in the text, like 'type line (1) into the interpreter and... . This is a standard mathematical idiom, but sometimes confusing when there is not enough space between the equation and the label, and especially when the equation label *could* be part of the equation, as with Python. -- http://mail.python.org/mailman/listinfo/python-list
Re: People still using Tkinter?
The only trick it that sometimes it isn't obvious how to make the Tcl/ Tk call via Python. Ken On May 10, 2008, at 11:27 AM, Martin v. Löwis wrote: I am, but still isn't the word, I just started. Good, *complete* docs seem to be hard to find, but using a combination of the free resources and going back and forth between them seems to work all right so far. IMO, the trick really is to also have a Tk documentation around. If you need to find out what option is supported by what widget, there isn't really much point in duplicating that information in Tkinter, IMO - the Tk documentation has it all. Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Is there a PyPI API?
I just can't figure out how to get the metadata, I guess. See http://wiki.python.org/moin/PyPiXmlRpc Regards, Martin -- http://mail.python.org/mailman/listinfo/python-list
how to reference my own module ?
hello, I've a library that I import as import ppygui.api as gui the reason for this construct is that I've to use different libraries for different platforms. Now I like to write some examples in the library (activated by if __name__ == '__main__' :) and I would that these examples can be used in the user program just by copy / paste. For calling a function / class in the user program I've to write: sizer = gui.VBox () So also write exactly the same sentence in the library examples, but gui is not recognized Any ideas how I can realize the above ? thanks, Stef Mientki -- http://mail.python.org/mailman/listinfo/python-list
Re: Now what!?
On 2008-05-10, notbob [EMAIL PROTECTED] wrote: BTW, anyone know a better cli news client/editor combo than slrn/jed (don't even think vi!)? When I cp/past code (or most anything else) to jed, all the lines become stair-stepped. This is no biggie for a most stuff, but for idented code, it's unacceptable. Whoo-hoo! I just got emacs config'd to do python. Let's see how that works. nb -- http://mail.python.org/mailman/listinfo/python-list
Re: Is there a PyPI API?
On May 10, 2:23 pm, Martin v. Löwis [EMAIL PROTECTED] wrote: I just can't figure out how to get the metadata, I guess. See http://wiki.python.org/moin/PyPiXmlRpc Regards, Martin Ah-so. Most helpful, Martin. Thanks a lot! Mike -- http://mail.python.org/mailman/listinfo/python-list
Any other UI kits with text widget similar to that in Tk?
I'm wondering if any of the other GUI kits have a text widget that is similar in power to the one in Tk. wxWindows, from what I can tell, doesn't offer nearly the options the Tk widget does. I'm less familiar with Qt. Any feedback would be most appreciated. Thanks, Ken -- http://mail.python.org/mailman/listinfo/python-list
Re: Any other UI kits with text widget similar to that in Tk?
Kenneth McDonald wrote: I'm wondering if any of the other GUI kits have a text widget that is similar in power to the one in Tk. wxWindows, from what I can tell, doesn't offer nearly the options the Tk widget does. I'm less familiar with Qt. Any feedback would be most appreciated. Thanks, Ken -- http://mail.python.org/mailman/listinfo/python-list Don't know what the power of tk is, but wxPython has the powerfull Scintilla and a less sophisticated richtext on board. cheers, Stef -- http://mail.python.org/mailman/listinfo/python-list
Re: Mathematics in Python are not correct
I am stunned that this simple misunderstanding of mine ended in a mathematical clash of a sort. :) You guys really blew me away wih your mathematical knowledge. And also the 0**0 is a thing I've never thought about trying, until now that is. If the mathematical rule is that EVERYTHING raised to the power of 0 is 1, then we should accept that, even in the case of 0**0. This is just the way it is. I have two another interesting things to discuss about, for which I'll open new posts on this group. Look for Python doesn't recognize quote types and Python, are you ill?. -- http://mail.python.org/mailman/listinfo/python-list
Python doesn't recognize quote types
There's a thing that bugs me in Python. Look at this... print Testing\ SyntaxError: EOL while scanning single-quoted string Please focus on the part of the error message that states while scanning single-quoted string. How can Python claim it scanned a single-quoted string when I fed it with a double-quoted string? Is quote type (single quote and double quote) recognition not implemented in Python? -- http://mail.python.org/mailman/listinfo/python-list
Python, are you ill?
If you are in the interactive prompt of the Python interpreter and you do this print Testing\ or print '''Testing\''' you get three dots [...] as if Python expects a code block. If you press Enter, you get three dots again, and again, and again... You can't get out of the code block with pressing the Enter key; you have to press Ctrl+Z (if you're in Linux) in order to get out of that code block, which then throws you back to the Linux command line, but before that it prints this line [1]+ Stopped python If you do print Testing\ or print 'Testing\' you get an error, but not of you use the triple quotes. Is that a bug in the interpreter perhaps? -- http://mail.python.org/mailman/listinfo/python-list
Re: Python, are you ill?
This is not a bug, this is how it should work. A triple quoted string ends only with another triple quoted string (which can extend over multiple lines) In your example you are escaping the first quote character at the end of the line, thus leaving just two quotes that do not end the string. Another (triple quote) will terminate the string. HTH 2008/5/10 [EMAIL PROTECTED]: If you are in the interactive prompt of the Python interpreter and you do this print Testing\ or print '''Testing\''' you get three dots [...] as if Python expects a code block. If you press Enter, you get three dots again, and again, and again... You can't get out of the code block with pressing the Enter key; you have to press Ctrl+Z (if you're in Linux) in order to get out of that code block, which then throws you back to the Linux command line, but before that it prints this line [1]+ Stopped python If you do print Testing\ or print 'Testing\' you get an error, but not of you use the triple quotes. Is that a bug in the interpreter perhaps? -- http://mail.python.org/mailman/listinfo/python-list -- http://mail.python.org/mailman/listinfo/python-list
Re: Python, are you ill?
On May 11, 6:59 am, [EMAIL PROTECTED] wrote: If you are in the interactive prompt of the Python interpreter and you do this print Testing\ or print '''Testing\''' you get three dots [...] as if Python expects a code block. If you press Enter, you get three dots again, and again, and again... You can't get out of the code block with pressing the Enter key; you have to press Ctrl+Z (if you're in Linux) in order to get out of that code block, which then throws you back to the Linux command line, but before that it prints this line [1]+ Stopped python If you do print Testing\ or print 'Testing\' you get an error, but not of you use the triple quotes. Is that a bug in the interpreter perhaps? No. This might clue you in: print Testing\ Testing Cheers, John -- http://mail.python.org/mailman/listinfo/python-list
Re: Python, are you ill?
[EMAIL PROTECTED] wrote: If you are in the interactive prompt of the Python interpreter and you do this print Testing\ or print '''Testing\''' you get three dots [...] as if Python expects a code block. If you press Enter, you get three dots again, and again, and again... You can't get out of the code block with pressing the Enter key; you have to press Ctrl+Z (if you're in Linux) in order to get out of that code block, which then throws you back to the Linux command line, but before that it prints this line [1]+ Stopped python If you do print Testing\ or print 'Testing\' you get an error, but not of you use the triple quotes. Is that a bug in the interpreter perhaps? print testing\ testing John -- http://mail.python.org/mailman/listinfo/python-list
Re: Python, are you ill?
* [EMAIL PROTECTED] [EMAIL PROTECTED] [2008-05-10 13:59:37 -0700]: If you are in the interactive prompt of the Python interpreter and you do this print Testing\ or print '''Testing\''' you get three dots [...] as if Python expects a code block. If you press Enter, you get three dots again, and again, and again... You can't get out of the code block with pressing the Enter key; That is because Python expects you to end the triple-quoted string with three unescaped quotes. you have to press Ctrl+Z (if you're in Linux) in order to get out of that code block, which then throws you back to the Linux command line, but before that it prints this line [1]+ Stopped python That ^Z just suspends your Python interpreter. It has become a job you can now bring to foreground again with fg. (but it's a feature of your shell, not of Python) If you do print Testing\ or print 'Testing\' you get an error, but not of you use the triple quotes. Is that a bug in the interpreter perhaps? The fact is, that triple-quoted strings can span on multiple lines, and that single-quoted strings cannot (without the line ending with a \). So no, it's not a bug in the interpreter. Regards, -- Nicolas Dandrimont signature.asc Description: Digital signature -- http://mail.python.org/mailman/listinfo/python-list
Re: Python doesn't recognize quote types
* [EMAIL PROTECTED] [EMAIL PROTECTED] [2008-05-10 13:56:39 -0700]: There's a thing that bugs me in Python. Look at this... print Testing\ SyntaxError: EOL while scanning single-quoted string Please focus on the part of the error message that states while scanning single-quoted string. How can Python claim it scanned a single-quoted string when I fed it with a double-quoted string? Is quote type (single quote and double quote) recognition not implemented in Python? The single-quoted string (e.g. 'foo' or bar) is so named by opposition to triple-quoted (e.g. '''foo''' or bar) strings. Regards, -- Nicolas Dandrimont signature.asc Description: Digital signature -- http://mail.python.org/mailman/listinfo/python-list
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Re: Python, are you ill?
[EMAIL PROTECTED] wrote: You can't get out of the code block with pressing the Enter key; you have to press Ctrl+Z (if you're in Linux) in order to get out of that code block, which then throws you back to the Linux command line, but before that it prints this line [1]+ Stopped python You can use Ctrl+C and Python will stop what it's doing and go back to its main prompt. -- -- http://mail.python.org/mailman/listinfo/python-list
Re: The Importance of Terminology's Quality
Sherman Pendley wrote: Lew [EMAIL PROTECTED] writes: You guys are off topic. None of the million groups to which this message was posted are about netiquette. Netiquette has come up at one point or another in pretty much every group I've ever read. It's pretty much a universal meta-topic. Good, then please have the courtesy not to include comp.lang.java.programmer in the distribution for this thread any longer. -- Lew -- http://mail.python.org/mailman/listinfo/python-list
Re: Python doesn't recognize quote types
On May 11, 6:56 am, [EMAIL PROTECTED] wrote: There's a thing that bugs me in Python. Look at this... print Testing\ SyntaxError: EOL while scanning single-quoted string Please focus on the part of the error message that states while scanning single-quoted string. How can Python claim it scanned a single-quoted string when I fed it with a double-quoted string? Is quote type (single quote and double quote) recognition not implemented in Python? Read this: http://docs.python.org/ref/strings.html Try each of these: print 'Testing print 'Testing\' print 'Testing\'Testing print 'Testing' print 'Testing\'' print 'Testing\'Testing' There's a wrinkle that's common to both your questions: \ causes the not to be regarded as (part of) the end marker but to be included as a data character. Similarly with '. Examples: print She said \Hello!\ She said Hello! print 'His surname is O\'Brien' His surname is O'Brien In the error message, quoted is the past tense of the verb to quote, meaning to wrap a string of characters with a leading string and a trailing string to mark the contained string as a lexical item, typically a string constant. The message is intended to convey that the leading marker has been seen, but an EOL (end of line) was reached without seeing the trailing marker. A better error message might be something like String constant not terminated at end of line. Unfortunately the above-mentioned documentation uses le-quote as a noun to describe characters -- IMHO this is colloquial and confusing; it should call ' an apostrophe, not a single-quote, and all a quote, not a double-quote. The confusion is compounded by referring to '''abc''' and xyz as triple-quoted strings ... so one might expect 'abc' and xyz to be called single-quoted strings, and this sense is what is being used in the error message. HTH, John -- http://mail.python.org/mailman/listinfo/python-list
test
test -- http://mail.python.org/mailman/listinfo/python-list
test
test -- http://mail.python.org/mailman/listinfo/python-list
Re: how to reference my own module ?
Stef Mientki [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
| hello,
|
| I've a library that I import as
|
|import ppygui.api as gui
|
| the reason for this construct is that I've to use different libraries
| for different platforms.
|
| Now I like to write some examples in the library (activated by if
| __name__ == '__main__' :)
| and I would that these examples can be used in the user program just by
| copy / paste.
|
| For calling a function / class in the user program I've to write:
|
|sizer = gui.VBox ()
|
| So also write exactly the same sentence in the library examples,
| but gui is not recognized
|
| Any ideas how I can realize the above ?
Put the import statement in the example so 'gui' *is* recognized ;-)
If I understand what you meant ...
xploro/test/begin.py
-
def start():
print('hello')
if __name__ == '__main__':
import xploro.test.begin as etb
etb.start()
prints 'hello'|
Import is a name-binding statement that also creates a module when it does
not exist already. Modules can be bound to multiple names just like any
other object.
Terry Jan Reedy
--
http://mail.python.org/mailman/listinfo/python-list
Re: Now what!?
On 2008-05-10, Dennis Lee Bieber [EMAIL PROTECTED] wrote: These are the minute details that bedevil the poor noob. I've read dozens of tutorials on different prog langs and have never read a single thing on white space or blank lines preceding a shebang. Till now. I always get Well... The shebang line is OS and shell specific The #! is sort of a holdover from the magic number used back in the day on Unix systems. Traditionally, the type of an executable file on Unix systems was determined by a magic number that was read from the first two bytes of a file: http://en.wikipedia.org/wiki/Magic_number_(programming) Back then there was a text file somewhere that listed the various 16-bit values and what they meant. The file program used that list to guess what a file was. It's gotten considerably more complex since then, and the magic file has syntax to specify fairly large/complex patterns that are used to determine file types. If you're curious, there's probably a magic file somewhere on your system. On Gentoo it's at /usr/share/misc/file/magic, On a Linux system (and I presume on other Unixes), the kernel itself (if built with the proper options) knows know how start a script file that starts with the characters #!. When the kernel is told to execute a file whose first two bytes are #! (0x32,0x21), it knows to read the newline terminated path of an executable starting at the byte following the ! (the third byte in the file). The kernel then executes that file, appending the name of the original script file to the argv list. -- Grant Edwards grante Yow! My mind is making at ashtrays in Dayton ... visi.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Find more than one error at once
On May 10, 8:13 am, Diez B. Roggisch [EMAIL PROTECTED] wrote: What kind of errors? Syntax-errors? Then use one of the python source code analyzers, such as pylint or pychecker. Great! -- http://mail.python.org/mailman/listinfo/python-list
Re: Now what!?
On Sat, May 10, 2008 at 3:57 PM, Grant Edwards [EMAIL PROTECTED] wrote: On a Linux system (and I presume on other Unixes), the kernel itself (if built with the proper options) knows know how start a script file that starts with the characters #!. When the kernel is told to execute a file whose first two bytes are #! (0x32,0x21), it knows to read the newline terminated path of an executable starting at the byte following the ! (the third byte in the file). The kernel then executes that file, appending the name of the original script file to the argv list. Wow, thanks for the history lesson. I was under the impression that this was a bash thing, I had no idea it went as deep as the kernel! -- http://mail.python.org/mailman/listinfo/python-list
Re: how to reference my own module ?
Terry Reedy wrote:
Stef Mientki [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
| hello,
|
| I've a library that I import as
|
|import ppygui.api as gui
|
| the reason for this construct is that I've to use different libraries
| for different platforms.
|
| Now I like to write some examples in the library (activated by if
| __name__ == '__main__' :)
| and I would that these examples can be used in the user program just by
| copy / paste.
|
| For calling a function / class in the user program I've to write:
|
|sizer = gui.VBox ()
|
| So also write exactly the same sentence in the library examples,
| but gui is not recognized
|
| Any ideas how I can realize the above ?
Put the import statement in the example so 'gui' *is* recognized ;-)
If I understand what you meant ...
xploro/test/begin.py
-
def start():
print('hello')
if __name__ == '__main__':
import xploro.test.begin as etb
etb.start()
prints 'hello'|
Import is a name-binding statement that also creates a module when it does
not exist already. Modules can be bound to multiple names just like any
other object.
Thanks Terry,
works like a charm,
why is the obvious often so difficult overlooked ;-)
cheers,
Stef
Terry Jan Reedy
--
http://mail.python.org/mailman/listinfo/python-list
--
http://mail.python.org/mailman/listinfo/python-list
Re: Now what!?
On 2008-05-10, Dennis Lee Bieber [EMAIL PROTECTED] wrote: So... in short, you'd need to have been reading a tutorial specific to shell scripting... I have been. I'm also trying to learn bash shell scripting, not to mention sed/awk, php, etc. I should have started this a long time ago, but I'm lazy and, like I said, I'm not particularly fond of coding. Yes, I have learned basic C and basic , but never beyond intro. Now, I'm doing it because I'm a geezer and I figure my brain needs more exercise then just blabbing on usenet. Besides, I've been cruising while using linux for too long and have remained low end intermediate. Time to get serious. Pass the cheat sheets! nb -- http://mail.python.org/mailman/listinfo/python-list
Initializing a subclass with a super object?
Class A inherits from class B. Can anyone point me in the direction of documentation saying how to initialize an object of A, a1, with an object of B, b1? -- http://mail.python.org/mailman/listinfo/python-list
Re: implementation for Parsing Expression Grammar?
In article [EMAIL PROTECTED], Lars Rune Nøstdal [EMAIL PROTECTED] wrote: Hi, Finite automata works for nested things. Only in the special case when the depth of nesting is bounded ahead of time. If it's unbounded then there is an unbounded amount of stack information that the automaton needs to remember, therefore a finite automaton cannot do it. pedantry That should be Finite automata WORK ..., since automata is plural. /pedantry http://en.wikipedia.org/wiki/Automata_theory -- --- | BBBb\ Barbara at LivingHistory stop co stop uk | B B aa rrr b | | BBB a a r bbb |Quidquid latine dictum sit, | B B a a r b b |altum viditur. | BBBaa a r bbb | - -- http://mail.python.org/mailman/listinfo/python-list
Re: Initializing a subclass with a super object?
On May 11, 7:22 am, [EMAIL PROTECTED] wrote: Class A inherits from class B. Can anyone point me in the direction of documentation saying how to initialize an object of A, a1, with an object of B, b1? This is called a 'factory'in design patterns. Search 'python factory', you will get a lot of examples. br, Terry -- http://mail.python.org/mailman/listinfo/python-list
Re: Find more than one error at once
Diez B. Roggisch wrote: Joseph Turian schrieb: Is it possible to coax python to find more than one error at once? What kind of errors? Syntax-errors? Then use one of the python source code analyzers, such as pylint or pychecker. I don't know about pylint, but PyChecker works in a combination of ways. First, it imports each module. If there is an import error, the module cannot be processed. -- so it fails on the first syntax error. For example: C:\junktype syntaxerrors.py if foo = bar: pass foo = unterminated 123 = foo C:\junkpython -m pychecker.checker syntaxerrors.py Processing syntaxerrors... SyntaxError: invalid syntax (syntaxerrors.py, line 1) if foo = bar: ^ Warnings... syntaxerrors:1: NOT PROCESSED UNABLE TO IMPORT C:\junk -- http://mail.python.org/mailman/listinfo/python-list
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Re: Mathematics in Python are not correct
[EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] |I am stunned that this simple misunderstanding of mine ended in a | mathematical clash of a sort. :) You guys really blew me away wih | your mathematical knowledge. And also the 0**0 is a thing I've never | thought about trying, until now that is. Anyone who defines a function should think about 'edge' and 'corner' cases. Recursive definitions often help, since such cases are typically the base cases. When learning a (computer) function, I often test such cases since they are a common place to mess up. tjr -- http://mail.python.org/mailman/listinfo/python-list
Re: Initializing a subclass with a super object?
Hi, Terry. Yeah, no. If we think of the inherited B as an object nested within a1, I'm attempting to initialize that B with b1 by accessing the B, say, via a function call. I don't see how using a python factory achieves this. -- http://mail.python.org/mailman/listinfo/python-list
Re: multiple Python versions, but on Windows (how to handle registry updates)
En Sat, 10 May 2008 01:38:24 -0300, Banibrata Dutta [EMAIL PROTECTED] escribió: given that I already have Python2.5 installed will install Python2.4, will copying the ../Lib/site-packages/ from 2.5 into 2.4's, work ? i think the answer is no, but still asking. is it package specific ? does it matter if the packages were egg drops ? Packages containing only .py modules (pure packages) are OK; packages using C extensions (.dll, .pyd) have to be rebuilt (or you have to download the binaries for the other Python version). -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: The Importance of Terminology's Quality
On Fri, 09 May 2008 22:45:26 -0500, [EMAIL PROTECTED] (Rob Warnock) wrote: George Neuner gneuner2/@/comcast.net wrote: On Wed, 7 May 2008 16:13:36 -0700 (PDT), [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Functions [in Mathematica] that takes elements out of list are variously named First, Rest, Last, Extract, Part, Take, Select, Cases, DeleteCases... as opposed to car, cdr, filter, filter, pop, shift, unshift, in lisps and perl and other langs. | Common Lisp doesn't have filter. Of course it does! It just spells it REMOVE-IF-NOT!! ;-} ;-} I know. You snipped the text I replied to. Xah carelessly conflated functions snatched from various languages in an attempt to make some point about intuitive naming. If he objects to naming a function filter, you can just imagine what he'd have to say about remove-if[-not]. George -- for email reply remove / from address -- http://mail.python.org/mailman/listinfo/python-list
do you fail at FizzBuzz? simple prog test
http://reddit.com/r/programming/info/18td4/comments claims people take a lot of time to write a simple program like this: Write a program that prints the numbers from 1 to 100. But for multiples of three print Fizz instead of the number and for the multiples of five print Buzz. For numbers which are multiples of both three and five print FizzBuzz. for i in range(1,101): if i%3 == 0 and i%5 != 0: print Fizz elif i%5 == 0 and i%3 != 0: print Buzz elif i%5 == 0 and i%3 == 0: print FizzBuzz else: print i is there a better way than my solution? is mine ok? -- http://mail.python.org/mailman/listinfo/python-list
Re: implementation for Parsing Expression Grammar?
On Fri, 9 May 2008 22:52:30 -0700 (PDT), [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: In the past weeks i've been thinking over the problem on the practical problems of regex in its matching power. For example, often it can't be used to match anything of nested nature, even the most simple nesting. It can't be used to match any simple grammar expressed by BNF. Some rather very regular and simple languages such as XML, or even url, email address, are not specified as a regex. (there exist regex that are pages long that tried to match email address though) What's your point? The limitations of regular expressions are well known. After days of researching this problem, looking into parsers and its theories etc, today i found the answer!! What i was looking for is called Parsing Expression Grammar (PEG). PEG has its own problems - it's very easy with PEG to create subtly ambiguous grammars for which quite legal looking input is rejected. And there are no good tools to analyze a PEG and warn you of subtle problems. Chris Clark (YACC++) has posted at length about the merits, problems and limitations of various parse techniques - including PEG - in comp.compilers. Before you consider doing anything with PEG I suggest you look up his posts and read the related threads. It seems to me it's already in Perl6, and there's also a implementation in Haskell. Is the perl6 PEG is in a usable state? Thanks. Xah [EMAIL PROTECTED] ? http://xahlee.org/ George -- for email reply remove / from address -- http://mail.python.org/mailman/listinfo/python-list
RE: firefox add-on to grab python code handily?
On Behalf Of Larry Bates Since most of us keep Idle or some other Python IDE open nearly 100% of the time we just copy from webpage, paste into new Python document, and run in the IDE. While you could clearly write a plug-in for FF to achieve this, IMHO I doubt many people would actually use it. Not that I'm going to implement it, but it would be really neat to tie something together with codepad[1] [1] http://codepad.org/ (With the site owner's permission, of course!) Regards, Ryan Ginstrom -- http://mail.python.org/mailman/listinfo/python-list
Re: do you fail at FizzBuzz? simple prog test
globalrev wrote: http://reddit.com/r/programming/info/18td4/comments claims people take a lot of time to write a simple program like this: Write a program that prints the numbers from 1 to 100. But for multiples of three print Fizz instead of the number and for the multiples of five print Buzz. For numbers which are multiples of both three and five print FizzBuzz. for i in range(1,101): if i%3 == 0 and i%5 != 0: print Fizz elif i%5 == 0 and i%3 != 0: print Buzz elif i%5 == 0 and i%3 == 0: print FizzBuzz else: print i is there a better way than my solution? is mine ok? Try doing it using %3 and %5 only once each. -- http://mail.python.org/mailman/listinfo/python-list
Re: do you fail at FizzBuzz? simple prog test
On Sun, 11 May 2008 11:12:37 +1000, globalrev [EMAIL PROTECTED] wrote: http://reddit.com/r/programming/info/18td4/comments claims people take a lot of time to write a simple program like this: Write a program that prints the numbers from 1 to 100. But for multiples of three print Fizz instead of the number and for the multiples of five print Buzz. For numbers which are multiples of both three and five print FizzBuzz. for i in range(1,101): if i%3 == 0 and i%5 != 0: print Fizz elif i%5 == 0 and i%3 != 0: print Buzz elif i%5 == 0 and i%3 == 0: print FizzBuzz else: print i is there a better way than my solution? is mine ok? Looks OK to me. A different version, and I test for multiples of 3 and 5 first: map(lambda x: (not x%3 and not x%5 and FizzBuzz) or (not x%3 and Fizz) or (not x%5 and Buzz) or x, xrange(1,101)) -- Kam-Hung Soh a href=http://kamhungsoh.com/blog;Software Salariman/a -- http://mail.python.org/mailman/listinfo/python-list
Re: Can I delete the namespace of a module that i import?
En Fri, 09 May 2008 11:06:49 -0300, gbin,Zhou [EMAIL PROTECTED] escribió: I see from http://docs.python.org/tut/node11.html; that Name spaces are created at different moments and have different lifetimes. The namespace containing the built-in names is created when the Python interpreter starts up, and is never deleted. The global namespace for a module is created when the module definition is read in; normally, module namespaces also last until the interpreter quits. So can I delete the namespace of a module that i import? You can make Python forget a module by removing it from sys.modules; that way, next time you import it, Python will load it again from file. Or you can use the built-in reload() function to get a fresh copy from file. But any references to objects in the old module will still refer to the old objects (that means, by example, that existing instances of classes defined in the module will still refer to the old definition) -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
