#which python
/Library/anaconda/bin/python
#which python3
/Library/Frameworks/Python.framework/Versions/3.5/bin/python3
# which pip3 or #which pip
/Library/Frameworks/Python.framework/Versions/3.5/bin/pip3
现在系统默认的pip是python3的怎么找python2 的pip呢？在python2存放的目录下边找。
#/Library/anaconda/bin/pip
#/Library/anaconda/bin/pip --version
pip 7.1.2 from /Library/anaconda/lib/python2.7/site-packages (python 2.7)
Ctrl + D 退出Python环境exist( )
那么如何用pip install python 的 packages呢？
