Программа перебирает месяца с циклом while, и к атрибуту age у класса Person() добавляется +1

import time


class Person():
months = ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August',
'September', 'October', 'November', 'December']

def __init__(self, name, age):
self.name = name
self.age = age

def grow_up(self):
if Person.months[0] == 'January' and Person.months[1] == 'February' and \
Person.months[2] == 'March' and Person.months[3] == 'April' and Person.months[4] == 'May' and \
Person.months[5] == 'June' and Person.months[6] == 'July' and Person.months[7] == 'August' and \
Person.months[8] == 'September' and Person.months[9] == 'September' and \
Person.months[10] == 'October' and Person.months[11] == 'November' and \
Person.months[12] == 'December':

i = 0
while i < 12:
print(Person.months[i])
if i == 0:
time.sleep(0.30)
elif i == 1:
time.sleep(0.28)
elif i == 2:
time.sleep(0.30)
elif i == 3:
time.sleep(0.31)
elif i == 4:
time.sleep(0.31)
elif i == 5:
time.sleep(0.30)
elif i == 6:
time.sleep(0.31)
elif i == 7:
time.sleep(0.30)
elif i == 8:
time.sleep(0.31)
elif i == 9:
time.sleep(0.31)
elif i == 10:
time.sleep(30)
elif i == 11:
time.sleep(0.30)
elif i == 12:
time.sleep(0.31)
i += 1
else:
print(f'{self.age} + {1}')


person = Person('Maxim', 14)
print(person.grow_up())

0