[ python-Bugs-875157 ] file.read returns reaches EOF when it shouldn't

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Bugs item #875157, was opened at 2004-01-11 17:37
Message generated for change (Comment added) made by rhettinger
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Category: Python Library
Group: Python 2.2.3
Status: Open
Resolution: None
Priority: 5
Submitted By: Joshua Allen (turingcomplete)
Assigned to: Nobody/Anonymous (nobody)
Summary: file.read returns reaches EOF when it shouldn't

Initial Comment:
If the first byte of a file is 0xFF file.read(size)
will return an empty string.  Problem found while
trying to process binary file produced by another system.

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>Comment By: Raymond Hettinger (rhettinger)
Date: 2004-01-11 17:50

Message:
Logged In: YES 
user_id=80475

I tried it an Py2.2.3, Py2.3.3, and Py2.4a0 and it works
fine.  Perhaps you have some other problem.

>>> f = open('/pydev/hello.bin', 'rb')
>>> f.read(6)
'\xffhello'

The docstring for file.read does warn that sometimes fewer
bytes than requested can be returned in a non-blocking mode.

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