🌐 Mailman 3 February 2005 - Tutor - python.org

How to calculate pi with this formula?
by Dick Moores April 14, 2005

April 14, 2005

Is it possible to calculate almost-pi/2 using the (24) formula on <http://mathworld.wolfram.com/PiFormulas.html> without using (23)? If it's possible, how about a hint? Recursion? Thanks, tutors. Dick Moores rdm(a)rcblue.com

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Re: [Tutor] how to read from a txt file
by Brian van den Broek March 30, 2005

March 30, 2005

jrlen balane said unto the world upon 2005-02-17 02:41: > sir, what seemed to be the problem with this: > > def process(list_of_lines): > data_points = [] > for line in list_of_lines: > data_points.append(int(line)) > return data_points > > data_file = open('C:/Documents and Settings/nyer/Desktop/nyer.txt', 'r') > data = data_file.readline() > > print process(data) > > > here is what is written in the nyer.txt: > 1000 > 890 > 900 > 500 > 650 > 850 > 1200 > 1100 > > what i want is to print data_points: > and this is the error: > > Traceback (most recent call last): > File "C:\Python23\practices\opentxt", line 12, in -toplevel- > process(data) > File "C:\Python23\practices\opentxt", line 6, in process > data_points.append(int(line)) > ValueError: invalid literal for int(): Hi, I think the traceback is my fault from an oversight in the code I sent you when you posted before. Sorry about that :-[ There are two problems with your code. The immediate one, due to my advice, is that each line of your file ends with a newline character ('\n'). So, you cannot call int on '1000\n'. Try data_points.append(int(line[:-1])) instead. That will call int on line minus the last character (the newline). The other problem is that you use data = data_file.readline(). That will give you a single line each time you call it. If you stick with this approach, I think you want data = data_file.readlines() (note the 's' at the end.) But, you might do well to consider some of the other suggestions you got. They came from more capable programmers than me! Best, Brian vdB

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Re: Q & A
by liew choon chui March 4, 2005

March 4, 2005

Here are two question to need some solution. 1. Explain the difference between an object and a class (Objec Class). Give one specific example. 2. What is the differences between white box testing and black box testing approches. Thank You. Regards, Ernie Liew __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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Programming challenge (C++ and Python)
by Ali Polatel March 4, 2005

March 4, 2005

Dear Python friends, I need a favor.I play chess at a chess server with the name ICC(www.chessclub.com). I want to write a plugin for their interface using Python. I don't have any idea about how to write a plugin but I found out that the server administrator has written a Plugin Development Kit in C++ for those who wish to write plugins for the interface.I don't know C++ so I cannot convert this kit into python scripts.Can anyone do this for me? or can anyone examine those scripts and tell me a way how to write those with python?The development kit is avaliable at the site ftp://ftp.chessclub.com/pub/icc/interface/blitzin2/plugins/ under the name PluginDevkit.zip Any kind of help is appreciated. Regards, Ali Polatel --------------------------------- Do you Yahoo!? Yahoo! Search presents - Jib Jab's 'Second Term'

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Newbie question.
by Adriaan Louw March 4, 2005

March 4, 2005

Good day I'm totally new to Python. Wow, what a great language!!! I want to learn python as quick as possible, for web programming at first, and applications later on. Any leads? I have an xp windows and ms office machine. (I'm considering linux, but it's a bit daunting?) How do I run python scripts? Nothing happens when I double-click the filename, in IDLE I only get the code, and not what it does. I know that cgi-scripts must be called from html. I want to to use a python server for testing. Which is thebest, and how? Maybe my problem lies with directories? Sub-folders and paths. That's what I gather from the tutorial, but I have no success as yet. Even pygame, from Start>Programs>Examples, the games doesn't work. Sorry for all the questions, but I want to learn and grow. Thank you. Adriaan

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Proxy
by Ali Polatel March 4, 2005

March 4, 2005

is it possible to connect to somewhere through a proxy while using sockets module of Python to connect? If yes can you show me some basic examples? regards --------------------------------- Do you Yahoo!? Yahoo! Search presents - Jib Jab's 'Second Term'

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Python Online Programming Contest
by Varun Soundararajan March 2, 2005

March 2, 2005

Hi Friends, Department of Information Technology, Madras Institute of Technology, Anna University is conducting a technical symposium, Samhita. As a part of samhita, an Online Programming Contest is scheduled on Sunday, 27 Feb 2005. This is the first Online Programming Contest in India to support Python !!!!. Other languages supported are C and C++. For Registration and Rules of the contest, http://www.samhita.info/opc For details about samhita http://www.samhita.info/ Regards, -Online Programming Contest team

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open a socket from a named file on linux
by dm March 2, 2005

March 2, 2005

Hello, I am trying to open a socket connection to a named file on my computer and can not seem to get it working. Any help or advice would be great. The details I attempting to control xfmedia, http://spuriousinterrupt.org/projects/xfmedia/ , via it's remote from python and I can not get a connection. connection information from readme file <quote> Xfmedia has a remote control system, which consists of a UNIX socket in /tmp, xfmedia_remote.$UID.$SESSION_ID, where $UID is the uid of the user running xfmedia, and $SESSION_ID is a number (starting from zero) corresponding to the instance of xfmedia. (For example, if you're running one copy of xfmedia, $SESSION_ID will be 0. If you start a second instance, its $SESSION_ID will be 1. And so on.) </quote> when attempting to creat a connection with this command s = socket.fromfd('/tmp/xfmedia_remote.1001.0', socket.AF_UNIX, socket.SOCK_STREAM) i get this error </xfmedia_remote.1001.0', socket.AF_UNIX, socket.SOCK_STREAM) Traceback (most recent call last): File "<stdin>", line 1, in ? which i understand i need to use the file descripter instead but i can not not get the file descripter because when i attempt to open /tmp/xfmedia_remote.1001.o with the open command i get an error f = open('/tmp/xfmedia_remote.1001.0') Traceback (most recent call last): File "<stdin>", line 1, in ? IOError: [Errno 6] No such device or address: '/tmp/xfmedia_remote.1001.0' yet ls shows the file exists, xfmedia is working fine.

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Python and a web image map
by Ertl, John March 1, 2005

March 1, 2005

All, I have been doing Python for a bit now but I am trying to make a clickable map of the world on a web page that gives me the latitude and longitude of a location selected. I have done little with HTML beyond forms and have done no Java script. Is this a problem Python can solve or is this a HTML / Java script issue. Thanks, John Ertl

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Edonkey Automatic Search Program?!
by . , March 1, 2005

March 1, 2005

Hi, I just want to know whether this program can be programmed by python or not. p2p program like edonkey is very very complicated (I think so..) but, is searching program for edonkey complicated too? Should the search program be connected to edonkey? (I think so..) The Edonkey Automatic Search Program should be like... i input some words and the prgram automatically download files which are related to words by days, hours. I'm looking forward to see your replys... Cheers! :) _________________________________________________________________ Express yourself instantly with MSN Messenger! Download today it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/

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