Reference blog: The essence of the call function call() in python3 is to turn a class into a function (so that instances of this class can be called like functions).
class person:
def __call__(self, name):
print('__call__, '+'Hello,'+name)
def hello(self,name):
print('hello,'+name)
person = person()
person('zhangsan')
person.hello('lisi')#对比结果可以看到内置call函数无非就是可以直接用类名调用函数，而不用像person.hello()来调用函数
Running results:
From the comparison results, we can see that the built-in call function is nothing more than calling the function directly with the class name instead of calling the function like person.hello().
class person:
def __init__(self, name, age):
self.name = name
self.age = age
def __call__(self, male):
print('my name is %s' % self.name)
print('my age is %s' % self.age)
print('my male is %s' % male)
if __name__ == '__main__':
a = person('jack', 26)
a('男')
The class person defined here requires two parameters, a name and an age. After we pass in the parameters, we have an instance a, and the direct call of the instance a is the call method. This method makes the class a a function, which can be called , you can also add parameters to it.
operation result:
