报错：AttributeError: module 'pip' has no attribute 'main'的解决方法-蒲公英云

报错：AttributeError: module 'pip' has no attribute 'main'的解决方法

在Linux系统（Centos7.5）上安装python3.6的环境，安装完成后出现了这个错误，这个错误的猜测原因应该是之前安装过很多次这样的环境，所以安装的时候都没有下载packages的进度条，直接用了缓存的packages，所以造成了问题。

>>>pip list
Traceback (most recent call last):
  File "/home/jacob@iaclab.cse/Software/anaconda3/envs/i3d/bin/pip", line 6, in <module>
    sys.exit(pip.main())
AttributeError: module 'pip' has no attribute 'main'

解决方法，在命令行里面运行下面这个命令即可：

easy_install --upgrade pip

出现：

>>>easy_install --upgrade pip
Searching for pip
Reading https://pypi.python.org/simple/pip/
Download error on https://pypi.python.org/simple/pip/: [Errno 101] Network is unreachable -- Some packages may not be found!
Couldn't retrieve index page for 'pip'
Scanning index of all packages (this may take a while)
Reading https://pypi.python.org/simple/
Download error on https://pypi.python.org/simple/: [Errno 101] Network is unreachable -- Some packages may not be found!
Best match: pip 9.0.1
Adding pip 9.0.1 to easy-install.pth file
Installing pip script to /home/jacob@iaclab.cse/Software/anaconda3/envs/i3d/bin
Installing pip3 script to /home/jacob@iaclab.cse/Software/anaconda3/envs/i3d/bin
Installing pip3.6 script to /home/jacob@iaclab.cse/Software/anaconda3/envs/i3d/bin
Using /home/jacob@iaclab.cse/Software/anaconda3/envs/i3d/lib/python3.6/site-packages
Processing dependencies for pip
Finished processing dependencies for pip