calling functions in a class for an object python code example

Example 1: class methods in python

from datetime import date

# random Person
class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age

    @classmethod
    def fromBirthYear(cls, name, birthYear):
        return cls(name, date.today().year - birthYear)

    def display(self):
        print(self.name + "'s age is: " + str(self.age))

person = Person('Adam', 19)
person.display()

person1 = Person.fromBirthYear('John',  1985)
person1.display()

Example 2: python call function in class

#------------------------------------
#CLASS
#------------------------------------
class Student:
  def __init__(self):
    self.name = None
    
  def set_name(self, word):
    self.name = word
    return self.get_name()
    
  def get_name(self):
    return self.name
  
#------------------------------------
# USAGE:
#------------------------------------

a = Student()
print(a.set_name("Hello"))