[Python-bugs-list] [Bug #125297] select([], [], [], 1) on Windows raises exception

[noreply@sourceforge.net]

Bug #125297, was updated on 2000-Dec-10 23:17
Here is a current snapshot of the bug.

Project: Python
Category: Documentation
Status: Closed
Resolution: Fixed
Bug Group: Platform-specific
Priority: 5
Submitted by: jrosdahl
Assigned to : fdrake
Summary: select([], [], [], 1) on Windows raises exception

Details: The documentation for the select module says that "empty lists are allowed" for the select() call, but Python 2.0 on Windows 95 has troubles with that:

Python 2.0 (#8, Oct 16 2000, 17:27:58) [MSC 32 bit (Intel)] on win32
Type "copyright", "credits" or "license" for more information.
>>> import select
>>> select.select([], [], [], 1)
Traceback (innermost last):
  File "<pyshell#1>", line 1, in ?
    select.select([], [], [], 1)
error: (0, 'Error')

Real bug or documentation bug?

	Regards,
	Joel

Follow-Ups:

Date: 2000-Dec-11 12:34
By: tim_one

Comment:
Note that this is limitation #2 listed in

http://support.microsoft.com/support/kb/articles/Q147/7/14.asp

"""
2. Calling select() with three empty FD_SETs and a valid TIMEOUT structure as a delay function.

Reason: The select() function is intended as a network function, not a general purpose timer.

Workaround: Use a legitimate system timer service. 
"""
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Date: 2000-Dec-11 07:51
By: fdrake

Comment:
Added clarification to the documentation in Doc/lib/libselect.tex revision 1.17.
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Date: 2000-Dec-11 06:34
By: gvanrossum

Comment:
Confirmed -- empty lists are *not* allowed on Windows.

I suggest changing the documentation saying: "Whether three empty lists are allowed or not is platform dependent; it is known to work on Unix but not on Windows."
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