pip3表示“resolve pkg_resources.DistributionNotFound:pip==1.3.1”

Question

在OSX10.7.5上，我试图使用pip3命令将包安装到python3。当我尝试时，会收到以下错误消息：

zak$ pip3
Traceback (most recent call last):
  File "/usr/local/Cellar/python3/3.3.2/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/setuptools-1.0-py3.3.egg/pkg_resources.py", line 2793, in <module>
  File "/usr/local/Cellar/python3/3.3.2/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/setuptools-1.0-py3.3.egg/pkg_resources.py", line 673, in require
  File "/usr/local/Cellar/python3/3.3.2/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/setuptools-1.0-py3.3.egg/pkg_resources.py", line 580, in resolve
pkg_resources.VersionConflict: (pip 1.4.1 (/usr/local/lib/python3.3/site-packages), Requirement.parse('pip==1.3.1'))

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/pip3", line 5, in <module>
    from pkg_resources import load_entry_point
  File "<frozen importlib._bootstrap>", line 1567, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1534, in _find_and_load_unlocked
  File "/usr/local/Cellar/python3/3.3.2/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/setuptools-1.0-py3.3.egg/pkg_resources.py", line 2797, in <module>
  File "/usr/local/Cellar/python3/3.3.2/Frameworks/Python.framework/Versions/3.3/lib/python3.3/site-packages/setuptools-1.0-py3.3.egg/pkg_resources.py", line 576, in resolve
pkg_resources.DistributionNotFound: pip==1.3.1

看起来setuptools需要旧版本的pip（我已经安装了1.4.1），但是为什么呢？我该怎么解决？

Answer 1

运行后

pip install --upgrade setuptools

我能修好它。但对于每个人来说，这可能不是真的，因为我仍然在学习Python。