Could not find .egg-info directory in install record for *

输入：

sudo pip install cython

报错：

Could not find .egg-info directory in install record for cpython

出错原因：

将setuptools从６.0.1升级到6.0.2．

具体操作：

1. 下载安装6.0.2:

wget https://bootstrap.pypa.io/ez_setup.py -o -| sudo python

2. 安装ez_setup.py:

python ez_setup.py