I want to add the age for users in a different method but some users might not have an age argument
class User:
"""a class to save info about every user """
def __init__(self, user_name, num_id):
self.name = name
self.mun_id = num_id
def age(self, age):
self.age = age
user1 = User("martin", "1")
print (user1.name)