ubuntu16.04下安装keras时候遇到“pip._internal”BUG

报错提示ImportError: No module named ‘pip._internal’：

1 nuc@xy:~/Theano$ sudo pip3 install keras
2 Traceback (most recent call last):
3   File "/usr/local/bin/pip3", line 7, in <module>
4     from pip._internal.cli.main import main
5 ImportError: No module named \'pip._internal\'

经过多方查找，终于通过以下方式解决：

1 wget https://bootstrap.pypa.io/get-pip.py  --no-check-certificate
2 sudo python get-pip.py

之后成功安装keras。