动态导入Python模块 [英] Dynamically importing Python modules

问题描述

我正在尝试导入名称未知的模块的成员。而不是

I am trying to import the members of a module whose name is not known. Instead of

import foo

我正在使用：

__import__("foo")

如何从foo导入栏案例中为实现类似的操作而不是诉诸到eval？

How can I achieve a similar thing for the from foo import bar case instead of resorting to an "eval"?

更新：似乎 fromlist 做了这个伎俩。有没有办法从foo import * 模拟？ fromlist = ['*'] 没有做到这一点。

Update: It seems fromlist did the trick. Is there a way to emulate from foo import *? fromlist=['*'] didn't do the trick.

推荐答案

要从foo import * 模拟，你可以使用 dir 获取导入模块的属性：

To emulate from foo import * you could use dir to get the attributes of the imported module:

foo = __import__('foo')
for attr in dir(foo):
    if not attr.startswith('_'):
        globals()[attr] = getattr(foo, attr)

从foo import * 使用通常不赞成并仿效它更是如此，我想。

Using from foo import * is generally frowned upon, and emulating it even more so, I'd imagine.

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