[Python-bugs-list] [ python-Bugs-610584 ] readlines will not read the whole file

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Bugs item #610584, was opened at 2002-09-17 10:48
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Category: Windows
>Group: Not a Bug
>Status: Closed
>Resolution: Invalid
>Priority: 5
Submitted By: Wenhua (wezhang)
Assigned to: Tim Peters (tim_one)
Summary: readlines will not read the whole file

Initial Comment:
put the w.jpg file in c:\w.jpg

run the following:

>>>inputfile=open('c:\w.jpg', 'r')
>>>outputfile=open('c:\w2.jpg', 'w')
>>>L=inputfile.readlines()
>>>outputfile=writelines(L)

the w2.jpg will be much samller than the input file w.jpg
w2.jpg ends right before the character x1a.

it also happened in read(n), readline()...

I have install and reinstall python 22 a few times on two 
different computer running windows2000 prof.

under Cygwin the python 2.2.1 works fine, so I think the 
bug only happened  under windows.

please fix it ASAP, I could not find a way to go around 
it.  I try to use python 2.1.3 but it may has the same 
problem.


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>Comment By: Tim Peters (tim_one)
Date: 2002-09-17 10:59

Message:
Logged In: YES 
user_id=31435

Open binary files in binary mode.  That is, don't dare use 'r' 
and 'w' when opening binary files, use 'rb' and 'wb'.

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