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  • file reading in python

    - by Jagdev
    So my whole problem is that I have two files one with following format(for Python 2.6): #comments config = { #comments 'name': 'hello', 'see?': 'world':'ABC',CLASS=3 } This file has number of sections like this. Second file has format: [23] [config] 'name'='abc' 'see?'= [23] Now the requirement is that I need to compare both files and generate file as: #comments config = { #comments 'name': 'abc', 'see?': 'world':'ABC',CLASS=3 } So the result file will contain the values from the first file, unless the value for same attribute is there in second file, which will overwrite the value. Now my problem is how to manipulate these files using Python. Thanks in advance and for your previous answers in short time ,I need to use python 2.6

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  • How to use OpenCV in Python?

    - by Roman
    I have just installed OpenCV on my Windows 7 machine. As a result I get a new directory: C:\OpenCV2.2\Python2.7\Lib\site-packages In this directory I have two files: cv.lib and cv.pyd. Then I try to use the opencv from Python. I do the following: import sys sys.path.append('C:\OpenCV2.2\Python2.7\Lib\site-packages') import cv As a result I get the following error message: File "<stdin>", line 1, in <module> ImportError: DLL load failed: The specified module could not be found. What am I doing wrong? ADDED As it was recommended here, I have copied content of C:\OpenCV2.0\Python2.6\Lib\site-packages to the C:\Python26\Lib\site-packages. It did not help.

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  • Python module seeing a full list as empty in another module

    - by Nick
    I'm working on a pygame project and have the main engine layed out. The problem is I hit a bug that I just can not seem to figure out. What happens is one module can't read a variable from another module. It's not that the variable can't be read, it just sees an empty list instead of what it really is. Instead of posting the entire source code I reproduced the bug in two small snippets that hopefully a skillful python-ist can interpret in his\her head. Code: main.py (This is the file that gets run) import screen screens = [] #A stack for all the game screens def current_screen(): #return a reference to the current screen return screens[-1] def play(): print'play called' current_screen().update() if __name__=='__main__': screens.append(screen.Screen()) play() screen.py import main class Screen: def __init__(self): print'screen made' def update(self): print main.screens #Should have a reference to itself in there Thanks!

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  • Importing ctype; embedding python in C++ application

    - by Drew
    I'm trying to embed python within a C++ based programming language (CCL: The compuatational control language, not that any of you have heard of it). Thus, I don't really have a "main" function to make calls from. I have made a test .cc program with a main, and when I compile it and run it, I am able to import my own python modules and system modules for use. When I embed my code in my CCL-based program and compile it (with g++), it seems I have most functionality, but I get the import error: ImportError: /usr/lib/python2.6/lib-dynload/_ctypes.so: undefined symbol: PyType_GenericNew Can someone explain this to me and how to go about solving it? It seems like I've linked the objects correctly. Thanks.

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  • Load python module not from a file

    - by user575061
    Hello, I've got some python code in a library that attempts to load a simple value from a module that will exist for the applications that use this library from somemodule import simplevalue Normally, the application that uses the library will have the module file and everything works fine. However, in the unit tests for this library the module does not exist. I know that I can create a temporary file and add that file to my path at runtime, but I was curious if there is a way in python to load something in to memory that would allow the above import to work. This is more of a curiosity, saying "add the module to your test path" is not helpful :P

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  • How can I use the Homebrew Python with Homebrew MacVim on Mountain Lion?

    - by Stephen Jennings
    I originally asked and answered this question: How can I use the Homebrew Python version with Homebrew MacVim? These instructions worked on Snow Leopard using Xcode 4.0.1 and associated developer tools. However, they no longer seem to work on Mountain Lion with Xcode 4.4.1. My goal is to leave the system's version of Python completely untouched, and to only install PyPI packages into Homebrew's site-packages directory. I want to use the vim_bridge package in MacVim, so I need to compile MacVim against the Homebrew version of Python. I've edited the MacVim formula to add these to the arguments: --enable-pythoninterp=dynamic --with-python-config-dir=/usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/Current/lib/python2.7/config Then I install with the command: brew install macvim --override-system-vim --custom-icons --with-cscope --with-lua However, it still seems to be somehow using Python 2.7.2 from the system. This seems strange to me because it also seems to be using the correct executable. :python print(sys.version) 2.7.2 (default, Jun 20 2012, 16:23:33) [GCC 4.2.1 Compatible Apple Clang 4.0 (tags/Apple/clang-418.0.60)] :python print(sys.executable) /usr/local/bin/python $ /usr/local/bin/python --version Python 2.7.3 $ /usr/local/bin/python -c "import sys; print(sys.version)" 2.7.3 (default, Aug 12 2012, 21:17:22) [GCC 4.2.1 Compatible Apple Clang 4.0 ((tags/Apple/clang-421.0.60))] $ readlink /usr/local/lib/python2.7/config /usr/local/Cellar/python/2.7.3/Frameworks/Python.framework/Versions/Current/lib/python2.7/config I've removed everything in /usr/local and reinstalled Homebrew by running these commands: $ ruby <(curl -fsSkL raw.github.com/mxcl/homebrew/go) $ brew install git mercurial python ruby $ brew install macvim (nope, still broken) $ brew remove macvim $ ln -s /usr/local/Cellar/python/..../python2.7/config /usr/local/lib/python2.7/config $ brew install macvim

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  • Phone-book Database Help - Python

    - by IDOntWantThat
    I'm new to programming and have an assignment I've been working at for awhile. I understand defining functions and a lot of the basics but I'm kind of running into a brick wall at this point. I'm trying to figure this one out and don't really understand how the 'class' feature works yet. I'd appreciate any help with this one; also any help with some python resources that have can dummy down how/why classes are used. You've been going to work on a database project at work for sometime now. Your boss encourages you to program the database in Python. You disagree, arguing that Python is not a database language but your boss persists by providing the source code below for a sample telephone database. He asks you to do two things: Evaluate the existing source code and extend it to make it useful for managers in the firm. (You do not need a GUI interface, just work on the database aspects: data entry and retrieval - of course you must get the program to run or properly work He wants you to critically evaluate Python as a database tool. Import the sample code below into the Python IDLE and enhance it, run it and debug it. Add features to make this a more realistic database tool by providing for easy data entry and retrieval. import shelve import string UNKNOWN = 0 HOME = 1 WORK = 2 FAX = 3 CELL = 4 class phoneentry: def __init__(self, name = 'Unknown', number = 'Unknown', type = UNKNOWN): self.name = name self.number = number self.type = type # create string representation def __repr__(self): return('%s:%d' % ( self.name, self.type )) # fuzzy compare or two items def __cmp__(self, that): this = string.lower(str(self)) that = string.lower(that) if string.find(this, that) >= 0: return(0) return(cmp(this, that)) def showtype(self): if self.type == UNKNOWN: return('Unknown') if self.type == HOME: return('Home') if self.type == WORK: return('Work') if self.type == FAX: return('Fax') if self.type == CELL: return('Cellular') class phonedb: def __init__(self, dbname = 'phonedata'): self.dbname = dbname; self.shelve = shelve.open(self.dbname); def __del__(self): self.shelve.close() self.shelve = None def add(self, name, number, type = HOME): e = phoneentry(name, number, type) self.shelve[str(e)] = e def lookup(self, string): list = [] for key in self.shelve.keys(): e = self.shelve[key] if cmp(e, string) == 0: list.append(e) return(list) # if not being loaded as a module, run a small test if __name__ == '__main__': foo = phonedb() foo.add('Sean Reifschneider', '970-555-1111', HOME) foo.add('Sean Reifschneider', '970-555-2222', CELL) foo.add('Evelyn Mitchell', '970-555-1111', HOME) print 'First lookup:' for entry in foo.lookup('reifsch'): print '%-40s %s (%s)' % ( entry.name, entry.number, entry.showtype() ) print print 'Second lookup:' for entry in foo.lookup('e'): print '%-40s %s (%s)' % ( entry.name, entry.number, entry.showtype() ) I'm not sure if I'm on the right track but here is what I have so far: def openPB(): foo = phonedb() print 'Please select an option:' print '1 - Lookup' print '2 - Add' print '3 - Delete' print '4 - Quit' entry=int(raw_input('>> ')) if entry==1: namelookup=raw_input('Please enter a name: ') for entry in foo.lookup(namelookup): print '%-40s %s (%s)' % (entry.name, entry.number, entry.showtype() ) elif entry==2: name=raw_input('Name: ') number=raw_input('Number: ') showtype=input('Type (UNKNOWN, HOME, WORK, FAX, CELL): \n>> ') for entry in foo.add(name, number, showtype): #Trying to figure out this part print '%-40s %s (%s)'% (entry.name, entry.number, entry.showtype() ) elif entry==3: delname=raw_input('Please enter a name to delete: ') # #Trying to figure out this part print "Contact '%s' has been deleted" (delname) elif entry==4: print "Phone book is now closed" quit else: print "Your entry was not recognized." openPB() openPB()

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  • Python and mechanize login script

    - by Perun
    Hi fellow programmers! I am trying to write a script to login into my universities "food balance" page using python and the mechanize module... This is the page I am trying to log into: http://www.wcu.edu/11407.asp The website has the following form to login: <FORM method=post action=https://itapp.wcu.edu/BanAuthRedirector/Default.aspx><INPUT value=https://cf.wcu.edu/busafrs/catcard/idsearch.cfm type=hidden name=wcuirs_uri> <P><B>WCU ID Number<BR></B><INPUT maxLength=12 size=12 type=password name=id> </P> <P><B>PIN<BR></B><INPUT maxLength=20 type=password name=PIN> </P> <P></P> <P><INPUT value="Request Access" type=submit name=submit> </P></FORM> From this we know that I need to fill in the following fields: 1. name=id 2. name=PIN With the action: action=https://itapp.wcu.edu/BanAuthRedirector/Default.aspx This is the script I have written thus far: #!/usr/bin/python2 -W ignore import mechanize, cookielib from time import sleep url = 'http://www.wcu.edu/11407.asp' myId = '11111111111' myPin = '22222222222' # Browser #br = mechanize.Browser() #br = mechanize.Browser(factory=mechanize.DefaultFactory(i_want_broken_xhtml_support=True)) br = mechanize.Browser(factory=mechanize.RobustFactory()) # Use this because of bad html tags in the html... # Cookie Jar cj = cookielib.LWPCookieJar() br.set_cookiejar(cj) # Browser options br.set_handle_equiv(True) br.set_handle_gzip(True) br.set_handle_redirect(True) br.set_handle_referer(True) br.set_handle_robots(False) # Follows refresh 0 but not hangs on refresh > 0 br.set_handle_refresh(mechanize._http.HTTPRefreshProcessor(), max_time=1) # User-Agent (fake agent to google-chrome linux x86_64) br.addheaders = [('User-agent','Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11'), ('Accept', 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'), ('Accept-Encoding', 'gzip,deflate,sdch'), ('Accept-Language', 'en-US,en;q=0.8'), ('Accept-Charset', 'ISO-8859-1,utf-8;q=0.7,*;q=0.3')] # The site we will navigate into br.open(url) # Go though all the forms (for debugging only) for f in br.forms(): print f # Select the first (index two) form br.select_form(nr=2) # User credentials br.form['id'] = myId br.form['PIN'] = myPin br.form.action = 'https://itapp.wcu.edu/BanAuthRedirector/Default.aspx' # Login br.submit() # Wait 10 seconds sleep(10) # Save to a file f = file('mycatpage.html', 'w') f.write(br.response().read()) f.close() Now the problem... For some odd reason the page I get back (in mycatpage.html) is the login page and not the expected page that displays my "cat cash balance" and "number of block meals" left... Does anyone have any idea why? Keep in mind that everything is correct with the header files and while the id and pass are not really 111111111 and 222222222, the correct values do work with the website (using a browser...) Thanks in advance EDIT Another script I tried: from urllib import urlopen, urlencode import urllib2 import httplib url = 'https://itapp.wcu.edu/BanAuthRedirector/Default.aspx' myId = 'xxxxxxxx' myPin = 'xxxxxxxx' data = { 'id':myId, 'PIN':myPin, 'submit':'Request Access', 'wcuirs_uri':'https://cf.wcu.edu/busafrs/catcard/idsearch.cfm' } opener = urllib2.build_opener() opener.addheaders = [('User-agent','Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.11 (KHTML, like Gecko) Chrome/17.0.963.56 Safari/535.11'), ('Accept', 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8'), ('Accept-Encoding', 'gzip,deflate,sdch'), ('Accept-Language', 'en-US,en;q=0.8'), ('Accept-Charset', 'ISO-8859-1,utf-8;q=0.7,*;q=0.3')] request = urllib2.Request(url, urlencode(data)) open("mycatpage.html", 'w').write(opener.open(request)) This has the same behavior...

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  • Installing rpm module of Python for yum

    - by vito
    I've installed Python and yum from source (configure, make, make install), not using RPMs because that's leading to several other issues. So when I executed: # yum update ... I get the following error: Traceback (most recent call last): File "/usr/bin/yum", line 22, in <module> import yummain File "/usr/share/yum/yummain.py", line 22, in <module> import clientStuff File "/usr/share/yum/clientStuff.py", line 18, in <module> import rpm ImportError: No module named rpm Now because I've installed yum and python from source, do I need to install Python's rpm module from source, too? Because installing the rpm for this module lead to the following error: # rpm -vih rpm-python-3.0.4-6x.i386.rpm warning: rpm-python-3.0.4-6x.i386.rpm: V3 DSA signature: NOKEY, key ID db42a60e error: Failed dependencies: python >= 1.5.2 is needed by rpm-python-3.0.4-6x.i386 libbz2.so.0 is needed by rpm-python-3.0.4-6x.i386 librpm.so.0 is needed by rpm-python-3.0.4-6x.i386 Suggested resolutions: /var/spool/up2datepython-2.3.4-14.7.el4.x86_64.rpm I tried searching for the source of this module, but I couldn't find it. Any help in installing this module is appreciated. Thanks for your time. Other info: # python -V Python 2.6.5

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  • Python or Ruby for freelance?

    - by Sophia
    Hello, I'm Sophia. I have an interest in self-learning either Python, or Ruby. The primary reason for my interest is to make my life more stable by having freelance work = $. It seems that programming offers a way for me to escape my condition of poverty (I'm on the edge of homelessness right now) while at the same time making it possible for me to go to uni. I intend on being a math/philosophy major. I have messed with Python a little bit in the past, but it didn't click super well. The people who say I should choose Python say as much because it is considered a good first language/teaching language, and that it is general-purpose. The people who say I should choose Ruby point out that I'm a very right-brained thinker, and having multiple ways to do something will make it much easier for me to write good code. So, basically, I'm starting this thread as a dialog with people who know more than I do, as an attempt to make the decision. :-) I've thought about asking this in stackoverflow, but they're much more strict about closing threads than here, and I'm sort of worried my thread will be closed. :/ TL;DR Python or Ruby for freelance work opportunities ($) as a first language? Additional question (if anyone cares to answer): I have a personal feeling that if I devote myself to learning, I'd be worth hiring for a project in about 8 weeks of work. I base this on a conservative estimate of my intellectual capacities, as well as possessing motivation to improve my life. Is my estimate necessarily inaccurate? random tidbit: I'm in Portland, OR I'll answer questions that are asked of me, if I can help the accuracy and insight contained within the dialog.

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  • Should a Python programmer learn Ruby?

    - by C J
    Hi! I have been a Python programmer for around 1.5 years (one internship + side projects), so I am comfortable with the language. Given that everyone is talking about Ruby these days, and I mean seriously! No one bothers about Python (from what I've seen). See GitHub. All RoR. I apply for a job and they ask me about RoR. I look at the screencasts on peepcode.com and they are in Ruby. gitimmersion.com has all the tutorial in Ruby! I know this is pretty vague, but still... why Ruby! Everyone these days is obssessed with RoR! Why not Python? Anyways, my questions are: Should I learn Ruby? Is learning Ruby when knowing Python be, er, complicated for me? Or is it going to be just like learning any other language? Thanks!

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  • Python MySQL wrong architecture error

    - by phoebebright
    I've been at this for some time and read many sites on the subject. suspect I have junk lying about causing this problem. But where? This is the error when I import MySQLdb in python: >>> import MySQLdb /Library/Python/2.6/site-packages/MySQL_python-1.2.3c1-py2.6-macosx-10.6-universal.egg/_mysql.py:3: UserWarning: Module _mysql was already imported from /Library/Python/2.6/site-packages/MySQL_python-1.2.3c1-py2.6-macosx-10.6-universal.egg/_mysql.pyc, but /Users/phoebebr/Downloads/MySQL-python-1.2.3c1 is being added to sys.path Traceback (most recent call last): File "<stdin>", line 1, in <module> File "MySQLdb/__init__.py", line 19, in <module> import _mysql File "build/bdist.macosx-10.6-universal/egg/_mysql.py", line 7, in <module> File "build/bdist.macosx-10.6-universal/egg/_mysql.py", line 6, in __bootstrap__ ImportError: dlopen(/Users/phoebebr/.python-eggs/MySQL_python-1.2.3c1-py2.6-macosx-10.6-universal.egg-tmp/_mysql.so, 2): no suitable image found. Did find: /Users/phoebebr/.python-eggs/MySQL_python-1.2.3c1-py2.6-macosx-10.6-universal.egg-tmp/_mysql.so: mach-o, but wrong architecture I'm trying for 64 bit so checked here: file $(which python) /usr/bin/python: Mach-O universal binary with 3 architectures /usr/bin/python (for architecture x86_64): Mach-O 64-bit executable x86_64 /usr/bin/python (for architecture i386): Mach-O executable i386 /usr/bin/python (for architecture ppc7400): Mach-O executable ppc file $(which mysql) /usr/local/mysql/bin/mysql: Mach-O 64-bit executable x86_64 Have set my default version of python to 2.6 python Python 2.6.1 (r261:67515, Feb 11 2010, 00:51:29) [GCC 4.2.1 (Apple Inc. build 5646)] on darwin Tried deleting build directory and python setup.py clean Renamed Python/2.5/site-packages so it could not try and pick that up. Run out of ideas. Any suggestions?

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  • Com server build using Python on 64-bit Windows 7 machine

    - by Vijayendra Bapte
    Original post is here: http://mail.python.org/pipermail/python-win32/2010-December/011011.html I am using: OS: 64 bit Windows 7 Professional Python: python-2.7.1.amd64 Python win32 extensions: pywin32-214.win-amd64-py2.7 Py2exe: py2exe-0.6.9.win64-py2.7.amd64 I am trying to build icon overlay for Windows. It has worked fine on 32 bit Windows but not working on 64 bit Windows 7. Here are the Python modules I have created for testing: test_icon_overlay.py: ( http://mail.python.org/pipermail/python-win32/attachments/20101229/bb8c78a4/attachment-0002.obj ) com server created in Python for icon overlay which adds check mark overlay icon(C:\icons\test.ico) on "C:\icons" folder setup_VI.py: ( http://mail.python.org/pipermail/python-win32/attachments/20101229/bb8c78a4/attachment-0003.obj ) setup file which creates test_icon_overlay.dll for distribution. icons.zip: ( http://mail.python.org/pipermail/python-win32/attachments/20101229/bb8c78a4/attachment-0001.zip ) for testing you should extract icons.zip inside C:\ Icon overlay appears on C:\icons folder when I execute python test_icon_overlay.py on Windows command prompt and restarts explorer.exe. But its not working with the dll file created using setup_VI.py I have created dll file using python setup_VI.py py2exe and then tried to register it using regsvr32 test_icon_overlay.dll. Registration fails with windows error message Error 0x80040201 while registering shell extension. Then I turned on logger in Python27/Lib/site-packages/py2exe/boot_com_servers.py and here is the traceback which I am getting in comerror.txt on regsvr32 test_icon_overlay.dll PATH is ['C:\\root\\avalon\\module\\sync\\python\\src\\dist\\library.zip'] Traceback (most recent call last): File "boot_com_servers.py", line 37, in <module> pywintypes.error: (126, 'GetModuleFileName', 'The specified module could not be found.') Traceback (most recent call last): File "<string>", line 1, in <module> NameError: name 'DllRegisterServer' is not defined Looks like there might be a problem with win32api.GetModuleFileName(sys.frozendllhandle) or with the dll build on 64-bit Windows 7. Also, I saw that installation of pywin32-214.win-amd64-py2.7 on 64-bit Windows 7 finish with the error message: Snapshot close failed in file object destructor: sys.excepthook is missing lost sys.stderr Is there anything which I am doing wrong? Any help on this is highly appreciated.

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  • Import problem with PyCrypto in Jython

    - by Arg
    Hello, I am currently trying to get python bittorrent tracker running inside of jython and i encountered this problem: the tracker uses PyCrypto library which i compiled for my platform and added into the python path. When i try to run code, however, i get following error: Exception in thread "MainThread" Traceback (most recent call last): File "./python_dep/BitTorrent-5.2.2/bittorrent-tracker.py", line 21, in <module> from BitTorrent.track import track File "./python_dep/BitTorrent-5.2.2/BitTorrent/track.py", line 50, in <module> from BitTorrent.UI import Size File "./python_dep/BitTorrent-5.2.2/BitTorrent/UI.py", line 37, in <module> from BitTorrent.MultiTorrent import UnknownInfohash, TorrentAlreadyInQueue, TorrentAlreadyRunning, TorrentNotRunning File "./python_dep/BitTorrent-5.2.2/BitTorrent/MultiTorrent.py", line 25, in <module> from BitTorrent.Torrent import Feedback, Torrent File "./python_dep/BitTorrent-5.2.2/BitTorrent/Torrent.py", line 32, in <module> from BitTorrent.ConnectionManager import ConnectionManager File "./python_dep/BitTorrent-5.2.2/BitTorrent/ConnectionManager.py", line 22, in <module> from BitTorrent.Connector import Connector File "./python_dep/BitTorrent-5.2.2/BitTorrent/Connector.py", line 27, in <module> from Crypto.Cipher import ARC4 ImportError: cannot import name ARC4 Java Result: 1 I am pretty sure that the library is in the python path, because command import Crypto.Cipher works, while from Crypto.Cipher import ARC4 does not. The java code i run looks like this: package jythTest; import org.python.util.PythonInterpreter; public class Main { public static void main(String[] args) { PythonInterpreter pythonInterpreter = new PythonInterpreter(); pythonInterpreter.exec("import sys"); pythonInterpreter.exec("sys.path.append(\"./python_dep/BitTorrent-5.2.2/\")"); pythonInterpreter.exec("sys.path.append(\"./python_dep/Twisted-10.0.0/\")"); pythonInterpreter.exec("sys.path.append(\"./python_dep/Zope-3.4.0/build/lib.linux-i686-2.6\")"); pythonInterpreter.exec("sys.path.append(\"./python_dep\")"); pythonInterpreter.exec("sys.path.append(\"./python_dep/pycrypto-2.0.1/build/lib.linux-i686-2.6\")"); pythonInterpreter.exec("sys.path.append(\"import Crypto.Cipher\")"); //pythonInterpreter.exec("print sys.path"); pythonInterpreter.execfile("./python_dep/BitTorrent-5.2.2/bittorrent-tracker.py"); } } Thanks in advance to anyone who could provide any kind of help.

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  • Downloading Python 2.5.4 (from official website) in order to install it

    - by brilliant
    I was quite hesitant about whether I should post this question here on "StackOverflow" or on "SuperUser", but finally decided to post it here as Python is more a programming language rather than a piece of software. I've been recently using Python 2.5.4 that is installed on my computer, but at the moment I am not at home (and won't be for about two weeks from now), so I need to install the same version of Python on another computer. This computer has Windows XP installed – just like the one that I have at home. The reason why I need Python 2.5.4 is because I am using “Google App Engine”, and I was told that it only supports Python 2.5 However, when I went to the official Python page for the download, I discovered that certain things have changed, and I don’t quite remember where exactly from that site I had downloaded Python 2.5.4 on my computer at home. I found this page: http://www.python.org/download/releases/2.5.4/ Here is how it looks: (If you can’t see it here, please check it out at this address: http://brad.cwahi.net/some_pictures/python_page.jpg ) A few things here are not clear to me. It says: For x86 processors: python-2.5.4.msi For Win64-Itanium users: python-2.5.4.ia64.msi For Win64-AMD64 users: python-2.5.4.amd64.msi First of all, I don’t know what processor I am using – whether mine is “x86” or not; and also, I don’t know whether I am an “Win64-Itanium” or an “Win64-AMD64” user. Are Itanium and AMD64 also processors? Later it says: Windows XP and later already have MSI; many older machines will already have MSI installed. I guess, it is my case, but then I am totally puzzled as to which link I should click as it seems now that I don’t need those three previous links (as MSI is already installed on Windows XP), but there is no fourth link provided for those who use “Windows XP” or older machines. Of course, there are these words after that: Windows users may also be interested in Mark Hammond's win32all package, available from Sourceforge. but it seems to me that it is something additional rather than the main file. So, my question is simple: Where in the official Python website I can download Python 2.5.4, precisely, which link I should click?

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  • How to install python without idle?

    - by jasonz
    I'm using Archlinux and I find I don't need Idle when I'm coding Python. Here is the part of default PKGBUILD file: ./configure --prefix=/usr \ --enable-shared \ --with-threads \ --with-computed-gotos \ --enable-ipv6 \ --with-valgrind \ --with-system-expat \ --with-dbmliborder=gdbm:ndbm \ --with-system-ffi Can I build python without installing Idle? Thanks in advance.

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  • How to implement ctypes in IronPython

    - by Walter
    I need help. I have a code which is passing a script into a DLL and initialize the instrument. But, one of the code unable to use in IronPython beside python 2.7 and 3.3 I have attached the code as below enter code here import ctypes import time, sys DLLHANDLE=ctypes.cdll.LoadLibrary("C:\\INSTRDLL\\builds\\DCSOURCEDLL\\B2902A.dll") INPUTSCRIPT="SYSTEM{DCSOURCE1|INIT}" INPUTVOLTAGE=0.0 c_INPUTSCRIPT=ctypes.c_char_p(INPUTSCRIPT) c_INPUTVOLTAGE=ctypes.c_double(INPUTVOLTAGE) SOURCEHANDLE=DLLHANDLE.DCSOURCE(c_INPUTSCRIPT,c_INPUTVOLTAGE) time.sleep(1) Once "SOURCEHANDLE=DLLHANDLE.DCSOURCE(c_INPUTSCRIPT,c_INPUTVOLTAGE)" is triggered, Ironpython will crash automatically and no idea how to resolve it... or any workaround solution? Please advice..

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  • Implementing PyMyType_Check methods with Python C API?

    - by Paul D.
    All the Python-provided types have a check method (i.e., PyList_Check) that allows you to check if an arbitrary PyObject* is actually a specific type. How can I implement this for my own types? I haven't found anything good online for this, though it seems like a pretty normal thing to want to do. Also, maybe I'm just terrible at looking through large source trees, but I cannot for the life of me find the implementation of PyList_Check or any of it's companions in the Python (2.5) source.

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  • how to connect to ethernet printer throught python?

    - by Prasanth
    How can i connect and send data to a Ethernet receipt printer Epson-T88V through python2.7, i have set the ipaddress of the Ethernet printer manually and the utility software communication is also successful. How do i detect and connect to these printers and send data to print. Is there and module for Ethernet connection in python. Using more than one Ethernet printer and separate data to be printed simultaneously from a single system, i am using windows xp and python 2.7 hope i am clear Thanks.

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  • Python double underscore mangling

    - by gnr
    I am a bit confused by this behavior (using python 3.2): class Bar: pass class Foo: def __init__(self): self.__cache = None bar = Bar() bar.__cache = None foo = Foo() print(vars(bar)) #returns {'__cache': None} print(vars(foo)) #returns {'_Foo__cache': None} I've read up a bit on how double-underscores cause attribute names to be "mangled", but I would have expected the same name-mangling in both cases above. The meaning of a single- and a double-underscore before an object name in Python Any ideas what's going on here?

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  • fake python modules via symlinks: on windows?

    - by eudoxos
    I have several compiled python modules; they are put into a single .so (to avoid runtime linking, there are cross-module symbol dependencies), but a number of symlinks points to this .so: libfoo.so -> liball.so libbar.so -> liball.so liball.so This way, I can do import foo (Python will call initfoo() defined in liball.so) or import bar (calls initbar()). I am wondering if this approach will work on Windows?

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  • Defining a function that is both a generator and recursive [on hold]

    - by user96454
    I am new to python, so this code might not necessarily be clean, it's just for learning purposes. I had the idea of writing this function that would display the tree down the specified path. Then, i added the global variable number_of_py to count how many python files were in that tree. That worked as well. Finally, i decided to turn the whole thing into a generator, but the recursion breaks. My understanding of generators is that once next() is called python just executes the body of the function and "yields" a value until we hit the end of the body. Can someone explain why this doesn't work? Thanks. import os from sys import argv script, path = argv number_of_py = 0 lines_of_code = 0 def list_files(directory, key=''): global number_of_py files = os.listdir(directory) for f in files: real_path = os.path.join(directory, f) if os.path.isdir(real_path): list_files(real_path, key=key+' ') else: if real_path.split('.')[-1] == 'py': number_of_py += 1 with open(real_path) as g: yield len(g.read()) print key+real_path for i in list_files(argv[1]): lines_of_code += i print 'total number of lines of code: %d' % lines_of_code print 'total number of py files: %d' % number_of_py

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  • Creating an installer for a python GTK3 application

    - by Noam Gal
    I have just finished developing a Python 2.7 application using Gtk3 for GUI. My question is, how can I now create an installer for Windows, Mac, and Linux (possibly three different installers) for my end-users to easily download the application without having to download python and GTK and such. I have never created an installer from a python script before. I have heard that are some tools for this purpose (py2exe? pyinstaller?), but I wouldn't know how and what to pack with them in order for it to be able to use Gtk3. Thanks in advanced, Noam.

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