通过pip安装matplotlib后，我现在无法从OS X Python导入matplotlib，我想卸载它并重新开始。我想我有matplotlib的多个副本，这可能导致问题。见下文。
*cbhe:pip install matplotlib
Requirement already satisfied (use --upgrade to upgrade): matplotlib in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python
Requirement already satisfied (use --upgrade to upgrade): numpy>=1.5 in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): python-dateutil in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): tornado in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): pyparsing>=1.5.6 in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): nose in /Library/Python/2.7/site-packages (from matplotlib)
Requirement already satisfied (use --upgrade to upgrade): backports.ssl-match-hostname in /Library/Python/2.7/site-packages (from tornado->matplotlib)
Requirement already satisfied (use --upgrade to upgrade): certifi in /Library/Python/2.7/site-packages (from tornado->matplotlib)*
有人能告诉我如何卸载matplotlib。我不是unix软件的人，并且非常希望拥有进行卸载所需的特定unix命令。