python - 是否可以在python中调用带有变量函数的模块？

Question

这里有更多上下文，在 python 中，你如何创建这种效果？

import random
variable = 'randint'
random.[variable](1,3)

请问有什么办法可以写出这种效果的代码吗？除了一堆 {if} block 之外，我没有发现任何东西。

谢谢!

Answer 1

您可以使用内置的 getattr:

>>> import random
>>> variable = 'randint'
>>> getattr(random, variable)(1, 3)
3
>>>

来自docs :

getattr(object, name[, default])

Return the value of the named attribute of object. name must be a string. If the string is the name of one of the object’s attributes, the result is the value of that attribute. For example, getattr(x, 'foobar') is equivalent to x.foobar. If the named attribute does not exist, default is returned if provided, otherwise AttributeError is raised.