[Python-Dev] Help to fix this bug http://bugs.python.org/issue15068

[Antoine Pitrou]

Hi,

On Tue, 19 Jun 2012 04:39:30 -0700 (PDT)
gmspro <gmspro at yahoo.com> wrote:
> Hi,
> 
> I'm working on this bug to fix it. http://bugs.python.org/issue15068

I'm not sure why you think this is fixable, given the comments on the
tracker. What is your plan?

> >>> from sys import stdin
> >>> str=stdin.read()
> hello
> hello world
> CTRL+D
> CTRL+D
> 
> Can anyone tell me where is stdin.read() function defined?
> Or where is sys.stdin defined?

Can I suggest you try to investigate it a bit yourself:

>>> sys.stdin
<_io.TextIOWrapper name='<stdin>' mode='r' encoding='UTF-8'>

So it's a TextIOWrapper from the _io module (which is really the
implementation of the io module). You'll find its source in
Modules/_io. TextIOWrapper objects are defined in Modules/_io/textio.c.
But as you know, they wrap buffered I/O objects, which are defined in
Modules/_io/bufferedio.c. In sys.stdin's case, the buffered I/O object
wraps a raw FileIO object, defined in Modules/_io/fileio.c:

>>> sys.stdin.buffer
<_io.BufferedReader name='<stdin>'>
>>> sys.stdin.buffer.raw
<_io.FileIO name='<stdin>' mode='rb'>


Regards

Antoine.