在python mac上安装protobuf时遇到问题

Question

运行easy_install protobuf之后我得到了这个:

Using /Library/Python/2.7/site-packages/protobuf-2.5.0-py2.7.egg
Processing dependencies for protobuf
Finished processing dependencies for protobuf

哪(我猜)意味着它认为它没关系但是当我尝试导入google.protobuf时出现错误.

Eyals-MacBook-Pro:python2.7 eredler$ python
Python 2.7.5 (default, Mar  9 2014, 22:15:05) 
[GCC 4.2.1 Compatible Apple LLVM 5.0 (clang-500.0.68)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import google.protobuf
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named google.protobuf

对此,我将不胜感激.谢谢