python2用pip进行安装时报错Fatal error in launcher: Unable to create process using '

win7下python3和python2共存环境

用pip安装一个包
执行pip2 install xxx的时候报错
Fatal error in launcher: Unable to create process using ‘“’

执行pip3 install xxx的时候报同样的错误
Fatal error in launcher: Unable to create process using ‘“’

解决办法
python2 -m pip install XXX
python3 -m pip install XXX

这样就可以正常使用pip安装模块了