print os.__file__

#Result: C:\\Python26\\lib\\os.pyc

 

方法二：

import os

import inspect

 

print inspect.getfile(os)

 

#Result: C:\\Python26\\lib\\os.pyc

print inspect.getsourcefile(os)

#Result: C:\\Python26\\lib\\os.py

 

方法三：

import os

import imp

print imp.find_module('os')

#Result: ((open file 'C:\Python26\lib\os.py', mode 'U' at 0x000000000000002105ed0), 'C:\\Python26\\lib\\os.py', (.py), 'U', 1)

 

• If the import module in the same dir, use e.g: from . import core
• If the import module in the top dir, use e.g: from .. import core
• If the import module in the other subdir, use e.g: from ..other import core