1、函数位置__code__

import os
print(os.walk.__code__)

输出:
<code object walk at 0x0000000001DB7DB0, file "C:\Program Files (x86)\python3.6\lib\os.py", line 277>

2、模块位置__file__

import os
print(os.__file__)

输出:
C:\Program Files (x86)\python3.6\lib\os.py

3、帮助文档

import rarfile
print(help(rarfile))

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