Issue 1279: os.system() oddity under Windows XP SP2 (original) (raw)

Issue1279

Created on 2007-10-15 13:12 by pythonmeister, last changed 2022-04-11 14:56 by admin. This issue is now closed.

Messages (3)
msg56439 - (view)	Author: Stefan Sonnenberg-Carstens (pythonmeister)	Date: 2007-10-15 13:12
When doing such os.system("a command wich writes a outfile") f = open("the file the command before wrote") the file is empty. If I do this: os.popen("a command wich writes a outfile") f = open("the file the command before wrote") everything is fine
msg56440 - (view)	Author: Tim Golden (tim.golden) *	Date: 2007-10-15 13:44
Not, apparently, on my (XP SP2) box: Python 2.5.1 (r251:54863, Apr 18 2007, 08:51:08) [MSC v.1310 32 bit (Intel)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> import os >>> os.system ("""python -c "f=open ('temp.txt','w');f.write('hello');f.close ()"""); print open ("temp.txt").read () 0 hello >>> Perhaps you could provide a runnable piece of code which demonstrates the problem?
msg59183 - (view)	Author: Christian Heimes (christian.heimes) *	Date: 2008-01-03 23:58
It might happen when the program hasn't terminated yet. You have to make sure the program has terminated before you read the file. Subprocess and its wait() should help.