【Python】Ubuntu 和 Python3

1. 安装 pip3 来作为 python3 的包管理工具

apt install python3-pip

2. 升级 pip3

安装完 pip3 后最好升级一下：pip3 install --upgrade pip

3. 升级完 pip3 之后使用 pip3 -V 查看版本出现如下错误：

root@:~# pip3 -V
Traceback (most recent call last):
  File "/usr/bin/pip3", line 9, in <module>
    from pip import main
ImportError: cannot import name 'main'

修改 /usr/bin/ 文件夹下的 pip3 文件：

#!/usr/bin/python3
# GENERATED BY DEBIAN

import sys

# Run the main entry point, similarly to how setuptools does it, but because
# we didn't install the actual entry point from setup.py, don't use the
# pkg_resources API.
from pip import main
if __name__ == '__main__':
    sys.exit(main())

改为：

#!/usr/bin/python3
# GENERATED BY DEBIAN

import sys

# Run the main entry point, similarly to how setuptools does it, but because
# we didn't install the actual entry point from setup.py, don't use the
# pkg_resources API.
from pip import main
if __name__ == '__main__':
    sys.exit(__main__._main())

4.

最后

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