🌐 Mailman 3 September 2010 - Python-list - python.org

py2exe deal with python command line inside a program
by susan_kijiji＠yahoo.ca Sept. 28, 2012

Sept. 28, 2012

Hi, I need to create a python subprogress, like this: myProcess = subprocess.Popen([sys.executable, 'C:\myscript.py'], env=env, stdin=subprocess.PIPE, stdout=subprocess.PIPE) sys.executable was printed out as ''C:\\Python25\\python.exe'', how can I make this work in executable package through py2exe? I have to fix the following problems: -Source code shouldn't exposed in an executable program -Since python environment is not required when running an executable program, how to deal with the situation that "C:\\Python25\ \python.exe" is required as part of command? Thanks in advance!

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Redirecting STDOUT to a Python Variable
by Anthony Papillion Sept. 27, 2012

Sept. 27, 2012

I'm writing an application that uses the Google Storage Python library. When an error occurs, the error is printed on the terminal. What I need to do is intercept that text into a variable so I can run a re.search() against it and find out what's going on. I thought doing a output_text = method_name(parameters) would stuff the output in the output_text variable but it doesn't. How can I accomplish this?

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PHP vs. Python
by stephen.mayer＠gmail.com Sept. 25, 2012

Sept. 25, 2012

Anyone know which is faster? I'm a PHP programmer but considering getting into Python ... did searches on Google but didn't turn much up on this. Thanks! Stephen

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Re: Storing of folder structure in SQL DB
by Sergei Minayev Sept. 21, 2012

Sept. 21, 2012

Amit Khemka: > On 5 Apr 2007 04:58:22 -0700, Sergei Minayev <sergei.minayev(a)gmail.com> wrote: > > Hi All! > > Can you please help me with the following problem: > > I need to store a copy of local folders structure in MySQL database. > > I have chosen the following table structure for that: > > ------------------------------------------------ > > | id | id_uplink | folder_name | > > ------------------------------------------------ > > id - unique property of each folder. > > id_uplink - id of upper level folder is stored here (for example: if > > id of c:\test is 1, than id_uplink of c:\test\python equals 1). > > folder_name - name of folder. > > You see, i dont want to store the path list, but the structure. > > > > The question is how to implement that in Python. I easily made it in C+ > > + using recursion. But, unfortunately, I can't figure it out how to > > make it in python using os.walk function (or can you recommend smth. > > else???). :( Though it looks quite simple, but anyway. > > > > Best Regards, > > os.walk should be more than sufficient in your case. You can navigate > the directory structure and at each 'new' directory find its parents > id and assign a new-id to this 'new' directory. > > An Example: > > import os > root='/my/root/directory' > id =0 > tree={root:(-1, id)} > id+=1 > for path, dirs, files in os.walk(root): > for dir in dirs: > if not tree.has_key(path+'/'+dir): > tree[path+'/'+dir]=(tree[path][1], id) > id+=1 > > It stores ids as a tuple (parent_id, id) in a dictionary(tree). Should > be straight forward to modify to your requirements. Also you can make > the following code more efficient by saving/caching some lookups ! > > Cheers, > -- > ---- > Amit Khemka -- onyomo.com > Home Page: www.cse.iitd.ernet.in/~csd00377 > Endless the world's turn, endless the sun's Spinning, Endless the quest; > I turn again, back to my own beginning, And here, find rest. Thanks! Your code example was really helpful!

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using subprocess.Popen does not suppress terminal window on Windows
by Steven Sept. 13, 2012

Sept. 13, 2012

I am calling a ruby program from a python gui and using subprocess.Popen in Windows XP using python 2.6. Unfortunately, whenever the ruby program is called a blank command window appears on screen, annoying my users. Is there a way to suppress this behaviour? Below is a minimal program that demonstrates the problem. The problem does not manifest if the python program is launched via the command line. To duplicate launch from Windows Explorer by double-clicking on the python file. --- call_double.pyw --- from subprocess import * import time time.sleep(3) # to show that command window is result of call to Popen p = Popen(['ruby.exe', 'double.rb'], stdin=PIPE, stdout=PIPE, stderr=PIPE) results = open('results.txt', 'w') for n in range(10): p.stdin.write("%d\n" % n) result = p.stdout.readline().strip() results.write('double(%s) => %2s\n' % (n, result)) results.close() --- end of call_double.pyw --- --- double.rb --- while true puts $stdin.gets().strip!.to_i * 2 STDOUT.flush end --- end of double.rb --- thanks for any help, Steven Rumbalski

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decoding a byte array that is unicode escaped?
by sam Aug. 13, 2012

Aug. 13, 2012

I have a byte stream read over the internet: responseByteStream = urllib.request.urlopen( httpRequest ); responseByteArray = responseByteStream.read(); The characters are encoded with unicode escape sequences, for example a copyright symbol appears in the stream as the bytes: 5C 75 30 30 61 39 which translates to: \u00a9 which is unicode for the copyright symbol. I am simply trying to display this copyright symbol on a webpage, so how do I encode the byte array to utf-8 given that it is 'escape encoded' in the above way? I tried: responseByteArray.decode('utf-8') and responseByteArray.decode('unicode_escape') and str(responseByteArray). I am using Python 3.1.

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jython lacks working xml processing modules?
by janeaustine50＠hotmail.com July 17, 2012

July 17, 2012

I'm trying to parse an xml file with jython (not through java parsers like xerces). I tried minidom in jython 2.1 and 2.2a but all failed. What can I do? The last resort would be using java parsers. Then how can I use them like python xml parsers? It seems like javadom and javasax has something to do, but I don't know how. Jane

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PyXML 0.8.2 is released
by martin＠v.loewis.de July 17, 2012

July 17, 2012

Version 0.8.2 of the Python/XML distribution is now available. It should be considered a beta release, and can be downloaded from the following URLs: http://prdownloads.sourceforge.net/pyxml/PyXML-0.8.2.tar.gz http://prdownloads.sourceforge.net/pyxml/PyXML-0.8.2.win32-py2.2.exe http://prdownloads.sourceforge.net/pyxml/PyXML-0.8.2-2.2.Suse81.i386.rpm Changes in this version, compared to 0.8.1: * Updated to Expat 1.95.6. * Support more DOM L3 features in minidom: isWhitespaceInElementContent, schemaType, isId, DOMImplementationSource * Various bug fixes, including - 609641: minidom nodes not pickleable - 618156: Use character references in XMLGenerator if necessary - 622286: marshal.wddx: 'recordset' element typo - 624420: Can't create 2nd Sax2.Reader - 665486: Implement SAX skippedEntity for Expat The Python/XML distribution contains the basic tools required for processing XML data using the Python programming language, assembled into one easy-to-install package. The distribution includes parsers and standard interfaces such as SAX and DOM, along with various other useful modules. The package currently contains: * XML parsers: Pyexpat (Jack Jansen), xmlproc (Lars Marius Garshol), sgmlop (Fredrik Lundh). * SAX interface (Lars Marius Garshol) * minidom DOM implementation (Paul Prescod, others) * 4DOM and 4XPath from Fourthought (Uche Ogbuji, Mike Olson) * Schema implementations: TREX (James Tauber) * Various utility modules and functions (various people) * Documentation and example programs (various people) The code is being developed bazaar-style by contributors from the Python XML Special Interest Group, so please send comments and questions to <xml-sig(a)python.org>. Bug reports may be filed on SourceForge: http://sourceforge.net/tracker/index.php?group_id=6473&atid=106473 For more information about Python and XML, see: http://www.python.org/topics/xml/ -- Martin v. Löwis http://www.informatik.hu-berlin.de/~loewis

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Keeping the Console Open with IDLE
by W. eWatson July 15, 2012

July 15, 2012

I'm using IDLE for editing, but execute programs directly. If there are execution or "compile" errors, the console closes before I can see what it contains. How do I prevent that? -- W. eWatson (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet Web Page: <www.speckledwithstars.net/>

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Create thumbnail image (jpg/png) of PDF file using Python
by sophie_newbie June 14, 2012

June 14, 2012

Is there any way to do this directly within python? If not is there any other good way to achieve it? Thanks in advance for any help!

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