pipが使えなくなった時はとりあえずpython入れ直そう（？）

問題

pipでパッケージを入れようとすると以下のようなエラーが出るようになった。

$ pip install progressbar
Traceback (most recent call last):
  File "/usr/local/bin/pip", line 9, in <module>
    load_entry_point('pip==1.5.6', 'console_scripts', 'pip')()
  File "build/bdist.macosx-10.6-x86_64/egg/pkg_resources.py", line 356, in load_entry_point
  File "build/bdist.macosx-10.6-x86_64/egg/pkg_resources.py", line 2439, in load_entry_point
  File "build/bdist.macosx-10.6-x86_64/egg/pkg_resources.py", line 2155, in load
  File "/usr/local/Cellar/python/2.7.7_1/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/__init__.py", line 10, in <module>
    from pip.util import get_installed_distributions, get_prog
  File "/usr/local/Cellar/python/2.7.7_1/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/util.py", line 18, in <module>
    from pip._vendor.distlib import version
  File "/usr/local/Cellar/python/2.7.7_1/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/_vendor/distlib/version.py", line 14, in <module>
    from .compat import string_types
  File "/usr/local/Cellar/python/2.7.7_1/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/pip-1.5.6-py2.7.egg/pip/_vendor/distlib/compat.py", line 31, in <module>
    from urllib2 import (Request, urlopen, URLError, HTTPError,
ImportError: cannot import name HTTPSHandler

対処

brewでpythonを入れ直してみたら治った。

$ brew reinstall python
$ pip install --upgrade pip
You are using pip version 6.0.8, however version 6.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
Collecting pip from https://pypi.python.org/packages/py2.py3/p/pip/pip-6.1.1-py2.py3-none-any.whl#md5=172eb5abab25a5e0f7a7b63c7a49378d
  Downloading pip-6.1.1-py2.py3-none-any.whl (1.1MB)
    100% |################################| 1.1MB 297kB/s 
Installing collected packages: pip
  Found existing installation: pip 6.0.8
    Uninstalling pip-6.0.8:
      Successfully uninstalled pip-6.0.8
$ pip install progressbar
Collecting progressbar
  Downloading progressbar-2.3.tar.gz
Installing collected packages: progressbar
  Running setup.py install for progressbar
Successfully installed progressbar-2.3