Silly import question (__file__ attribute)

[mh]

So on most modules I import, I can access the .__file__ attribute to
find the implementation. ie:[color=blue][color=green][color=darkred]
>>> import time
>>> time.__file__[/color][/color][/color]
'/data1/virtualpython/lib/python2.3/lib-dynload/timemodule.so'[color=blue][color=green][color=darkred]
>>> import socket
>>> socket.__file__[/color][/color][/color]
'/data1/virtualpython/lib/python2.3/socket.pyc'

This doesn't work on the "thread" module:[color=blue][color=green][color=darkred]
>>> import thread
>>> thread.__file__[/color][/color][/color]
Traceback (most recent call last):
File "<stdin>", line 1, in ?
AttributeError: 'module' object has no attribute '__file__'

A few questions. Why? Where is thread.py or thread.so? (I can't find
it).

thanks

matt

[Jack Diederich]

Re: Silly import question (__file__ attribute)

On Thu, Mar 09, 2006 at 02:04:45PM -0800, mh wrote:[color=blue]
> So on most modules I import, I can access the .__file__ attribute to
> find the implementation. ie:[color=green][color=darkred]
> >>> import time
> >>> time.__file__[/color][/color]
> '/data1/virtualpython/lib/python2.3/lib-dynload/timemodule.so'[color=green][color=darkred]
> >>> import socket
> >>> socket.__file__[/color][/color]
> '/data1/virtualpython/lib/python2.3/socket.pyc'
>
> This doesn't work on the "thread" module:[color=green][color=darkred]
> >>> import thread
> >>> thread.__file__[/color][/color]
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> AttributeError: 'module' object has no attribute '__file__'
>
> A few questions. Why? Where is thread.py or thread.so? (I can't find
> it).
>[/color]
Python 2.4.1 (#2, Mar 30 2005, 21:51:10)
[GCC 3.3.5 (Debian 1:3.3.5-8ubuntu2)] on linux2
Type "help", "copyright" , "credits" or "license" for more information.[color=blue][color=green][color=darkred]
>>> import sys
>>> import thread
>>> sys.modules['thread'][/color][/color][/color]
<module 'thread' (built-in)>[color=blue][color=green][color=darkred]
>>> thread[/color][/color][/color]
<module 'thread' (built-in)>[color=blue][color=green][color=darkred]
>>> ^D[/color][/color][/color]
sprat:~# cd ~/src/python-head/Modules/
sprat:~/src/python-head/Modules# ls thread*
threadmodule.c threadmodule.o

It is a built-in module so it doesn't have a .so (dll) or .py file
to mention.

-Jack

[Fredrik Lundh]

Re: Silly import question (__file__ attribute)

"mh" wrote:
[color=blue]
> So on most modules I import, I can access the .__file__ attribute to
> find the implementation. ie:[color=green][color=darkred]
> >>> import time
> >>> time.__file__[/color][/color]
> '/data1/virtualpython/lib/python2.3/lib-dynload/timemodule.so'[color=green][color=darkred]
> >>> import socket
> >>> socket.__file__[/color][/color]
> '/data1/virtualpython/lib/python2.3/socket.pyc'
>
> This doesn't work on the "thread" module:[color=green][color=darkred]
> >>> import thread
> >>> thread.__file__[/color][/color]
> Traceback (most recent call last):
> File "<stdin>", line 1, in ?
> AttributeError: 'module' object has no attribute '__file__'
>
> A few questions. Why? Where is thread.py or thread.so? (I can't find
> it).[/color]
[color=blue][color=green][color=darkred]
>>> import sys
>>> "thread" in sys.builtin_mod ule_names[/color][/color][/color]
True

</F>

[Steven D'Aprano]

Re: Silly import question (__file__ attribute)

On Thu, 09 Mar 2006 17:25:20 -0500, Jack Diederich wrote:
[color=blue]
> It is a built-in module so it doesn't have a .so (dll) or .py file
> to mention.[/color]

Wouldn't it make sense for module.__file__ to be set to None rather than
completely missing in this case?


--
Steven.