🌐 Mailman 3 July 2008 - Tutor - python.org

Wave module
by Alex Krycek Feb. 12, 2015

Feb. 12, 2015

Hello, I'm trying to join two .wav files with the wave module. But when I try to use wave.open(filename, "rb") I receive the following error: Traceback (most recent call last): File "<stdin>", line 1, in <module> File "F:\PortablePython1.0\lib\wave.py", line 483, in open return Wave_read(f) File "F:\PortablePython1.0\lib\wave.py", line 162, in __init__ self.initfp(f) File "F:\PortablePython1.0\lib\wave.py", line 143, in initfp self._read_fmt_chunk(chunk) File "F:\PortablePython1.0\lib\wave.py", line 264, in _read_fmt_chunk raise Error, 'unknown format: %r' % (wFormatTag,) wave.Error: unknown format: 85 I read somewhere that there are various wave formats, only some supported by Python. Is this true? If so, is there any way I can convert my wave files into a supported kind? Thanks!

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Send binary/hex data to a TCP socket
by Tod Haren July 19, 2011

July 19, 2011

I need to send a server at the other end of a socket a 36 byte "frame", where each byte represents a specific field in the custom data structure. (If there are any Ham operators reading this, I'm talking about the AGW Packet Engine) The documentation for the server says to initialize each field to a binary zero(0x00). How do I get a binary zero in Python? The next step is to send this all to the server and subsequently receive a similarly formated frame. A very basic frame looks something like this(modified from documentation): |00 00 00 00 4D 00 00 00 00 00 00 00 00 00 00 00 |....M........... |00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................ |00 00 00 00 |.... My problem is that hex(0) return '0x0' and hex(ord('M')) returns '0x4d'. If I concatonate these all together then the socket receives 109 bytes instead of 36. The documentation examples are in C++, so they are little help to me. The examples make use of the MoveMemory function for building the frames, but I'm clueless what that does. Pseudo code for the frame above: l = [] for i in xrange(36): l.append(hex(0)) l[4]=hex(ord('M')) d='' d=d.join(l) #I need some other data type to send besides a string! sock.send(d) #send the 36 bytes to the socket Any pointers or references would be greatly appreciated.

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cx_Oracle help
by Greg Lindstrom Jan. 6, 2011

Jan. 6, 2011

Hello, I'm trying to help out a friend and am stumped. Can you help me out? Thanks, --greg - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - I will briefly explain the problem I am facing. I am using Oracle 9.2, Python 2.5 and I installed cx_Oracle- 4.3.1-win32-9i-py25 in Python. From python I tried following : >>> import cx_Oracle >>> myDsn = cx_Oracle.makedsn('ISCN47',1521,'AUBDBS01') >>> CONN = cx_Oracle.connect(myusr, mypwd, myDsn) Traceback (most recent call last): File "<pyshell#4>", line 1, in <module> conn = cx_Oracle.Connection('scott','tiger',myDsn) RuntimeError: Unable to acquire Oracle environment handle I have set the below environment variables too NLS_LANG: <snip>.WE8MSWIN1252 ORACLE_HOME: D:\Tools\oracle\ora92 ORACLE_SID: AUBDBS01 PYTHON_HOME: d:\Utility\Python25 PYTHONPATH: %PYTHON_HOME%\lib;%PYTHON_HOME%\DLLs;%PYTHON_HOME%\Lib\site-packages;%ORACLE_HOME%\bin LD_LIBRARY_PATH: %LD_LIBRARY_PATH%;D:\Tools\oracle\ora92\lib Not getting any idea where I am wrong? Regards, Kishore

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Tracking time
by Michael Key Jan. 6, 2010

Jan. 6, 2010

I am trying to develop a project tracking program that would allow you to track hours and minutes spent on several different projects and store he data in a database for printing. Any help would be appreciated. Mike

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Learning Python
by Fred P Dec. 13, 2009

Dec. 13, 2009

Hey Everyone, I am completely new at python, but not new to programming or scripting. I have a couple of years of LUA scripting experience, about a year of C++ classes, and used to be very efficient at c-shell scripting in unix. My question for you guys: 1) How do I get Started? 2) Recommend any specific Books? 3) Any online tutors/ forums that would benefit a newbie 4) Any online classes that teach python? I have taken online c++ courses, and found them helpful. I was hoping to find something for python. My main objective is to write scripts for the following type of applications File management, file copies/syncs/ compares Text manipulation - like parsing text files to replace or augment specific values Integration into current applications to write redundant routines and maybe some day plugins I am not even sure what else, but I do know that every time i think of something that we need at work, other people say, "That would be a good task for a python script" and I would eventually like to be able to do something about that. Thanks Fred

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Re: [Tutor] Hands-on beginner's project?
by George Oliver Oct. 3, 2008

Oct. 3, 2008

> Python Universe Builder (PUB) is an Interactive Fiction module for > Python. It provides a > programming environment similar to that of Inform or TADS but runs > under any Python > interpreter. > > http://py-universe.sourceforge.net/ There also is PAWS (Python adventure writing system): http://home.fuse.net/wolfonenet/PAWS.htm Just for reference, other slightly more complicated examples of separating the game logic and data can be found in the mud genre. I recently wrote up a list of all the Python mud frameworks I could find: http://www.mudconnect.com/discuss/discuss.cgi?mode=MSG&area=coders&message=…

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How to create array of variants?
by Kelie Sept. 12, 2008

Sept. 12, 2008

Hello group, I'm trying to translate the following VB code into Python and not sure how to create an array of variants. Thanks for your help! VB Code: Sub SetXdata() Dim lineObj As AcadLine Set lineObj = ThisDrawing.ModelSpace.Item(0) Dim DataType(0 To 1) As Integer Dim Data(0 To 1) As Variant DataType(0) = 1001: Data(0) = "Test_Application" DataType(1) = 1070: Data(1) = 600 lineObj.SetXdata DataType, Data End Sub Python code import array import comtypes.client def SetXData(): activedoc = comtypes.client.GetActiveObject("AutoCAD.Application").ActiveDocument line = activedoc.ModelSpace.Item(0) dataType = array.array('i', [1001, 1070]) dataValue = array.array('?', ['Test_Application', 600]) #What should I use for the type code? line.SetXData(dataType, dataValue) if __name__ == "__main__": SetXData()

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Tutor Newbie
by Sam Last Name Aug. 1, 2008

Aug. 1, 2008

Hey guys, need some info on "programs" :) Heres a Very simple Script that works with basically any numbers. width = input("What is the Width?") length = input("What is the Length?") area = width*length print area # my question is what would it take (programs, extra stuff in script, ect..) to make this a nice looking usable desktop program?

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Newbie
by Sam Last Name Aug. 1, 2008

Aug. 1, 2008

Hey guys, I'm wanting to learn Python and eventually how to program with it. I'm 16 and very eager to learn. I already have a question. Heres my script: print "Hello World!" print "Here are the ten numbers from 0 to 9" for i in range(10) : print i, print "Goodbye World!" Result of my script : Hello World! Here are the ten numbers from 0 to 9 0 Goodbye World! 1 Goodbye World! 2 Goodbye World! 3 Goodbye World! 4 Goodbye World! 5 Goodbye World! 6 Goodbye World! 7 Goodbye World! 8 Goodbye World! 9 Goodbye World! I don't Understand. I have an idea it something like Goodbye world is threading together with the numbers? Feedback is Thanked :)

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Unzipping a list
by Faheem Aug. 1, 2008

Aug. 1, 2008

hey all, How can i pass the elements of a list in the follwoing manner? L =['ask'.'tell','repeat','sell'] To illustrate my question: how can i pass the above list as follows "/some/program/run -o ask tell repeat sell" thanks in advance

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