Getting file path of imported module

How can I get the file path of a module imported in python. I am using Linux (if it matters).

Eg: if I am in my home dir and import a module, it should return back the full path of my home directory.

From stackoverflow

• This will give you the directory the module is in:

  import foo
  os.path.dirname(foo.__file__)
  

• Modules and packages have a __file__ attribute that has its path information. If the module was imported relative to current working directory, you'll probably want to get its absolute path.

  import os.path
  import my_module
  
  print os.path.abspath(my_module.__file__)
  

• I've been using this:

  import inspect
  import os
  class DummyClass: pass
  print os.path.dirname(os.path.abspath(inspect.getsourcefile(DummyClass))
  

  (Edit: This is a "where am I" function - it returns the directory containing the current module. I'm not quite sure if that's what you want).

• To find the load path of modules already loaded:

  >>> import sys
  >>> sys.modules['os']
  <module 'os' from 'c:\Python26\lib\os.pyc'>