当改变Python版本后,安装某个曾安装的模块,报错:
Command "python setup.py egg_info" failed with error code 1 ...
If it’s already installed, try
pip install --upgrade setuptools
If it’s already up to date, check that the module ez_setup is not missing. If it is, then
pip install ez_setup
然后重新安装,问题解决。