Has method in Python 3.10

In Python 3.10, we can use the hasattr() built-in function to check if a class has a method or not. The hasattr() function takes two arguments: the object to check and the method name to look for. It returns True if the method is found, and False otherwise.

Here's an example. Let's assume we have a class named Person that has two methods, __init__() and greet(). We can check if the class has the greet() method as follows:

class Person:
    def __init__(self, name):
        self.name = name
def greet(self):

        print(f"Hello, my name is {self.name}.")
# check if the Person class has the greet() method

if hasattr(Person, "greet"):

    print("Person class has the greet() method.")

else:

    print("Person class does not have the greet() method.")

The output of the above code will be: Person class has the greet() method.

On the other hand, if we check if the Person class has a method named walk(), which it doesn't, the output will be: Person class does not have the walk() method.

# check if the Person class has the walk() method
if hasattr(Person, "walk"):
    print("Person class has the walk() method.")
else:
    print("Person class does not have the walk() method.")

I hope this helps!