查看已经安装的模块

方法一：

C:\Program Files\cmder
λ python
Python 3.7.4 (tags/v3.7.4:e09359112e, Jul  8 2019, 20:34:20) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> help('modules')

Please wait a moment while I gather a list of all available modules...

方法二：

C:\Program Files\cmder
λ python -m pydoc modules

Please wait a moment while I gather a list of all available modules...