从字符串调用方法 [英] Call method from string

问题描述

如果我有一个Python类，并且想根据变量从中调用函数，我该怎么做?我想以下可以做到这一点:

If I have a Python class, and would like to call a function from it depending on a variable, how would I do so? I imagined following could do it:

class CallMe: # Class

   def App(): # Method one

      ...

   def Foo(): # Method two

      ...

variable = "App" # Method to call

CallMe.variable() # Calling App()

但是不能.还有其他方法吗?

But it couldn't. Any other way to do this?

推荐答案

您可以执行以下操作:

getattr(CallMe, variable)()

getattr 是一种内置方法，它返回命名属性的值对象.在这种情况下，该值是可以使用()调用的方法对象

getattr is a builtin method, it returns the value of the named attributed of object. The value in this case is a method object that you can call with ()

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