How to list imported modules

• How to enumerate all imported modules?
• E.g. I would like to get [‘os’,‘sys’] from this code:

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import sys
import os

Answer liked most

• 所有加载模块都会出现在sys.moudles中

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import sys
sys.moudles.keys()

• An approximation of getting all imports for the current module only would be to inspect globals() for modules:

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import types

def imports():
    for name, val in globals.items():
        if isinstance(val, types.MoudleType):
            yield val.__name__

imported_moudles = [i for i in imports()]
print(imported_moudles)

• This won’t return local imports, or non-moudle imports like from x import y. Note that this returns val.__name__ so you get the original module name if you used import moudle as alias; yield name instead if you want the alias.

dynamically import

• 以下两种方式均可将变量或者包名的字符串传入，动态加载模块。
  1. exec()
  2. __import__()