How to call the function by the _ _ call__ method in python

Xiaobian to share with you how to implement the function call in python__call__method, I hope you have gained something after reading this article, let's discuss it together!

description

1. When calling a function decorated with overload, the__call__method in the Function class will be called.

To get the__call__method to get the correct function from the get function in the namespace and call it.

examples

def __call__(self, *args, **kwargs): """Overwrite the__call__method that makes an instance of a class callable"" #Get the function to be called from the virtual namespace fn = Namespace.get_instance().get(self.fn, *args) if not fn: raise Exception("no matching function found. ") #Call the wrapped function and return the result of the call return fn(*args, **kwargs)

This method gets the correct function from the virtual namespace. If no function is found, it's an Exception. If found, it calls the function and returns the call result.

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