🌐 Mailman 3 December 2000 - Python-list - python.org

Smalltalk/ROSE-like prog. environment?
by Bjoern Giesler Dec. 5, 2000

Dec. 5, 2000

Hi, I have a dream... :-) I'd like to have a programming environment that allows you to do graphical OO design (UML, ROSE-like) with access to all classes a project consists of (Smalltalk-like). This thing would allow the programmer to graphically design class interfaces and interactions, and edit method source code on a per-method basis. I.e. no editing-around in large .py files but working just on the job at hand. This would have a couple of other nifty features: A test mode in which an exception is presented to the user in a dialog box that allows modification of the code _while the program is running_ (this could be done with continuations, I believe) and stuff like that. This is a very hazy notion that has been floating around in my head for a while. I believe that Python would be the ideal language for this kind of application. Does anybody know of such an environment? If not, I'd like to give it a shot. Anybody have any ideas or want to collaborate with me? Regards, --Björn

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cursors.echo()
by Daniel Klein Dec. 5, 2000

Dec. 5, 2000

Hi, I'm trying to envoke the echo() function but the cursors module does not seem to be available on Windows. Is there an equivalent Windows function to turn echo off/on? Thanks, Daniel Klein

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Re: Graphs from python
by Larry Whitley Dec. 5, 2000

Dec. 5, 2000

I hadn't thought of that. I'll give it a shot. Thanks, Larry "Neil Hodgson" <neilh(a)scintilla.org> wrote in message news:HOTW5.4117$xW4.39082@news-server.bigpond.net.au... > Larry Whitley: > > > I'm looking at using win32com (by Mark Hammond) to drive excel or > > piddle+graphite to generage graphs directly from python. While I'm sure > it > > will get the job done, the excel object model is a bit overwhelming. > > The easy way to create Excel code and learn the object model is to turn > on the macro recorder and perform by hand the steps you need to create the > graphs. Then look at the generated code and generalise it to suite your > needs. > > Neil > > >

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debugging python extensions in c
by Oivvio Polite Dec. 5, 2000

Dec. 5, 2000

Hi everyone. We've just started writing a python extension in c. I know how to use the python debugger and I've done some c debugging before. But how do I go about to debug pointerstuff and memory leaks in python extension. We're writing this for both windows and linux. regards oivvio

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PythonWin
by Colin J. Williams Dec. 5, 2000

Dec. 5, 2000

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Dr. Dobb's Python-URL! - weekly Python news and links (Dec 4)
by Grant Edwards Dec. 5, 2000

Dec. 5, 2000

Alex Martelli discusses the issues involved in using Python within Windows Script Control. http://deja.com/=dnc/getdoc.xp?AN=698664345 Alex Martelli shows a clever way to overload a method based on number of arguments. http://deja.com/=dnc/getdoc.xp?AN=975947338 Dale Strickland-Clark and Alex Martelli on using Python programs as drop targets under Win32. http://deja.com/=dnc/getdoc.xp?AN=700537932 http://deja.com/=dnc/getdoc.xp?AN=700557153 Andrew H. Chatham announces Python bindings for Ogg/Vorbis (MP3 patent/licensing free replacement for MP3) -- and requests help with dlopen(). http://deja.com/=dnc/getdoc.xp?AN=975946985 Nick Mathewson shows how to implement a general overloading module for python. http://deja.com/=dnc/getdoc.xp?AN=700076223 Gordon McMillan releases fixed Installer for Python 2.0 http://deja.com/=dnc/getdoc.xp?AN=700179180 Raymond Hettinger shows a module to provide dynamic inheritance and convenient composition. http://deja.com/=dnc/getdoc.xp?AN=700743048 Johannes Nix releases Python wrappers for ALSA (Advanced Linux Sound Architecture) that enable real-time audio processing. http://deja.com/=dnc/getdoc.xp?AN=975947772 ======================================================================== Everything you want is probably one or two clicks away in these pages: Python.org's Python Language Website is the traditional center of Pythonia http://www.python.org although PythonLabs.com bills itself as "The Python Source", which is becoming increasingly true in 2000 http://www.pythonlabs.com/ PythonWare complements the digest you're reading with the daily python url http://www.pythonware.com/daily comp.lang.python.announce announces new Python software. Be sure to scan this newly-revitalized newsgroup at least weekly. http://deja.com/group/comp.lang.python.announce Andrew Kuchling writes marvelous summaries twice a month of the action on the python-dev mailing list, where the future of Python is truly determined http://www.amk.ca/python/dev The Vaults of Parnassus ambitiously collects Python resources http://www.vex.net/~x/parnassus/ Much of Python's real work takes place on Special-Interest Group mailing lists http://www.python.org/sigs/ Python Consortium emerges as an independent nexus of activity http://www.python.org/consortium Cetus does much of the same http://www.cetus-links.de/oo_python.html Python FAQTS http://python.faqts.com/ Python To-Do List anticipates some of Python's future direction http://www.python.org/cgi-bin/todo.py Python Journal is at work on its second issue http://www.pythonjournal.com Links2Go is a new semi-automated link collection; it's impressive what AI can generate http://www.links2go.com/search?search=python Archive probing trick of the trade: http://www.dejanews.com/dnquery.xp?QRY=&DBS=2&ST=PS&defaultOp=AND&LNG=ALL&f… Previous - (U)se the (R)esource, (L)uke! - messages are listed here: http://purl.org/thecliff/python/url.html or http://www.dejanews.com/dnquery.xp?QRY=~g%20comp.lang.python%20Python-URL%21 Suggestions/corrections for next week's posting are always welcome. [http://www.egroups.com/list/python-url-leads/ is hibernating. Just e-mail us ideas directly.] To receive a new issue of this posting in e-mail each Monday morning, ask <claird(a)neosoft.com> to subscribe. Mention "Python-URL!". -- The Python-URL! Team-- Dr. Dobb's Journal (http://www.ddj.com) is pleased to participate in and sponsor the "Python-URL!" project. -- Cameron Laird <claird(a)NeoSoft.com> Business: http://www.Phaseit.net Personal: http://starbase.neosoft.com/~claird/home.html

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Turning a flat file into a hierarchical structure
by Simon B. Dec. 5, 2000

Dec. 5, 2000

I have a tuple which contains a representation of a heirarcical structure, looking something like this: testdata = ((1, 'egg '), (2, 'bacon'), (2, 'sausage'), (3, 'spam'), (4, 'tomato'), (2, 'beans')) (In real world, this tuple is populated from a text file) I want to turn this into a tree structure, looking something like this: [(1, 'egg ', [(2, 'bacon', []), (2, 'sausage', [(3, 'spam', [(4, 'tomato', [])])]), (2, 'beans')])] I'm think that I'm nearly there, but I'm stuck on how to deal with climbing up the tree, that is to say, dealing with the transition from a lower to a higher level. My existing code looks like this: mylist = [] appendlist = mylist lastlevel = testdata[0][0] for level, text in testdata: if level == lastlevel: appendlist.append((level, text, [])) elif level > lastlevel: appendlist = appendlist[-1][-1] appendlist.append((level, text, [])) if level < lastlevel: break # What here? lastlevel = level print mylist Can anyone help me out? -- Simon Brunning The sooner you fall behind, the more time you'll have to catch up. - Steven Wright Sent via Deja.com http://www.deja.com/ Before you buy.

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Re: Script vs Program
by Dethe Elza Dec. 5, 2000

Dec. 5, 2000

Actually, I was referring to the tendency of a program to always be in the process of being written/maintained. It was also a misquote of P.E.I. Bonewits (who may have misquoted it from somewhere else himself). --Dethe

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Re: os.rmdir() and os.removedirs() only work on empty directories?
by Ben Hutchings Dec. 5, 2000

Dec. 5, 2000

jschmitt(a)vmlabs.com writes: > I was a bit surprised to find that os.rmdir() and os.removedirs() both > complained if I tried to delete a directory that was not empty. Is > that expected? POSIX says the rmdir call should only remove an empty directory, so it doesn't surprise me that os.rmdir behaves this way. I have yet to see what os.removedirs is for. > I guess shutil.rmtree() is the tool to use if I really want to > recursively delete a directory hierarchy that is non-empty. I hadn't seen that one - I wrote this function myself when I wanted recursive deletion: def rmdir_recursive(dir): """Remove a directory, and all its contents if it is not already empty.""" for name in os.listdir(dir): full_name = os.path.join(dir, name) # on Windows, if we don't have write permission we can't remove # the file/directory either, so turn that on if not os.access(full_name, os.W_OK): os.chmod(full_name, 0600) if os.path.isdir(full_name): rmdir_recursive(full_name) else: os.remove(full_name) os.rmdir(dir) > I don't quite understand this part of the documentation os.removedirs(): > '...if the leaf directory is successfully removed, directories > corresponding to rightmost path segments will be pruned way until > either the whole path is consumed...' I believe that this means it will remove successive parent directories referred to in the given path if they have become empty - so if you have the following directory structure: . (current directory) | +--a/ | | | +--b/ | | | | | +--c/ | | | | | +--d/ | | | +--e/ | +--f and you call os.removedirs('a/b/c/d'), it will remove directories a/b/c/d, a/b/c and a/b (assuming the process is permitted to do so). It will attempt to remove a, fail because a is not empty, and then stop. -- Any opinions expressed are my own and not necessarily those of Roundpoint.

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chunks in recordsets
by jon＠rne-s.com Dec. 5, 2000

Dec. 5, 2000

I've written a snipplet whitch i supposed to get a binary field from a database. Bur it don't work... here it is... (adoRS, success) = adoConn.Execute('select binary_field from multimedia where multimedia_id=41616') anyone who have a hint? is there any documentaton in ADO in python anywhere? Sent via Deja.com http://www.deja.com/ Before you buy.

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