Pip on Mac OS X ImportError: cannot import name walk_packages

Question

I have found several pip problems on stack overflow, but unfortunately it seems like I am experiencing some that I can't find. Particularly I am getting following error message whenever I try to use pip:

Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/2.7/bin/pip", line 9, in <module>
load_entry_point('pip==1.3.1', 'console_scripts', 'pip')()
 File "build/bdist.macosx-10.5-intel/egg/pkg_resources.py", line 357, in load_entry_point
"""Yield named metadata resource as list of non-blank non-comment lines
 File "build/bdist.macosx-10.5-intel/egg/pkg_resources.py", line 2394, in load_entry_point
except ValueError:
File "build/bdist.macosx-10.5-intel/egg/pkg_resources.py", line 2108, in load

File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip/__init__.py", line 10, in <module>
from pip.backwardcompat import u, walk_packages, console_to_str
ImportError: cannot import name walk_packages

Does anyone have any idea what can be wrong? Until now I have tried to reinstall pip as it was recommended here: Python mechanize module not found and I have also tried this Pip using system python osx, but non of them works for me.

Thank you in advance for any advices.

Answer 1

Somehow solved by command sudo easy_install -U pip