从字符串调用方法 [英] Call method from string
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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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