有什么办法查看python从哪里导入模块吗？

Question

So I installed the facebook module, realized it was the wrong one, used pip to uninstall and then installed facebook-sdk. Here is my code:

import facebook

token = '[token]'

graph = facebook.GraphAPI(token)
profile = graph.get_object("me")
friends = graph.get_connections("me", "friends")

friend_list = [friend['name'] for friend in friends['data']]

print friend_list

and get

Traceback (most recent call last):
  File "C:\Users\mgraves\Desktop\facebook.py", line 1, in <module>
    import facebook
  File "C:\Users\mgraves\Desktop\facebook.py", line 5, in <module>
    graph = facebook.GraphAPI(token)
AttributeError: 'module' object has no attribute 'GraphAPI'

When looking this up, EVERY result says to uninstall facebook and facebook-sdk and reinstall facebook-sdk. And I have, many many times. I searched /python27/ for facebook afterwards to make sure the files were gone.

Is there any way on a windows machine to trace back where I am importing "facebook" from?

Answer 1

Module objects have a __file__ attribute, and the object representation also includes the file:

print facebook
print facebook.__file__

In your case, you are importing your own script ; you named it facebook as well and are masking the installed module:

  File "C:\Users\mgraves\Desktop\facebook.py", line 1, in <module>
    import facebook
  File "C:\Users\mgraves\Desktop\facebook.py", line 5, in <module>
    graph = facebook.GraphAPI(token)

Note the filename in the first line, then the fact that the same file is used for that import. Python stores the main script as __main__ , so importing the script itself results in another module being created for the actual filename.