解决ImportError: Bad git executable.

ImportError: Bad git executable.
The git executable must be specified in one of the following ways:
    - be included in your $PATH
    - be set via $GIT_PYTHON_GIT_EXECUTABLE
    - explicitly set via git.refresh()

All git commands will error until this is rectified.

This initial warning can be silenced or aggravated in the future by setting the
$GIT_PYTHON_REFRESH environment variable. Use one of the following values:
    - quiet|q|silence|s|none|n|0: for no warning or exception
    - warn|w|warning|1: for a printed warning
    - error|e|raise|r|2: for a raised exception

Example:
    export GIT_PYTHON_REFRESH=quiet

解决方法：
1、添加环境变量
2、激活git
3、os.environ[“GIT_PYTHON_REFRESH”] = “quiet”

[注释] 3 表示在报错的链接处，点进去然后在 import git 或 from git import xxx前面加一行。

https://jingyan.baidu.com/article/15622f24a5b5cdbdfcbea5d5.html
https://stackoverflow.com/questions/48399498/git-executable-not-found-in-python