使用pip进行安装，出现 memory error，TypeError ... 的成功解决方案

1. 如果出现 memory error, 则将 pip install xxx 变更为 pip --no-cache-dir install xxx；
2. 如果出现 TypeError: unsupported operand type(s) for -=: 'Retry' and 'int', 则需要换源，可使用该解决方案：https://blog.youkuaiyun.com/sakus/article/details/81003512
3. 如果出现 Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-Ss0rvp/pillow/,则是pip出现问题：可使用该解决方案：https://me.jinchuang.org/archives/1158.html
4. 如果出现ERROR: pip’s dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts. 则需要按照提示安装缺失的包，可使用该解决方案：https://blog.youkuaiyun.com/weixin_43582443/article/details/111478698