问题
Getting few "package missing" errors while installing ipython on High Sierra.
matplotlib 1.3.1 has requirement numpy>=1.5, but you'll have numpy 1.8.0rc1 which is incompatible.
回答1:
I just met the same problem. It's a issue about numpy preinstall in Python has a version number issue(required >=1.5, but found 1.8.0rc1).
Try running brew install python2 to upgrade your python which may solve this issue.
回答2:
Simple solution provided by The Matplotlib development team:
https://matplotlib.org/faq/installing_faq.html#which-python-for-osx
来源：https://stackoverflow.com/questions/49638201/numpy-version-creating-issue-python-2-7-already-installed