pip的功能是安装python包.
python2和python3共存时如何使用pip
查看python2/3已经安装好了的pip
$ python2 -m pip list
$ python3 -m pip list安装python2/3的pip
$ python2 -m pip install numpy
$ python3 -m pip install numpy显示一个已经安装了的包的详细信息
$ python2 -m pip show Pillow
$ python3 -m pip show Pillow
更新已经安装了的包
比如更新tensorflow
# pip install --upgrade tensorflow