'''
Python 3.10+ required
due to the use of: match
read more: https://learnpython.com/blog/python-match-case-statement/
'''
from dateutil.relativedelta import relativedelta
from datetime import datetime
import calendar
import os
def clearScreen():
os.system('cls' if os.name in ('nt', 'dos') else 'clear')
def show_age(year, month, day, selection):
birth_date = datetime(year, month, day)
delta = relativedelta(datetime.now(), birth_date)
match selection:
case '1':
date_diff = datetime.now() - birth_date
return f'you are {date_diff.days} days old'
case '2':
return f'you are {delta.months} months old and {delta.days} days old'
case '3':
print(("Damn. That's old!", 'Good for you!') [delta.years < 36])
return f'you are {delta.years} years, {delta.months} months and {delta.days} days old'
case _: # default action
pass
repeat = 'y'
name = input('Hello. What is your name? ')
while repeat in ['y', 'Y']:
clearScreen()
while True:
try:
birth_year = int(input(f'Hello {name} what year were you born? '))
if not len(str(birth_year)) == 4:
print('Year must to be four digits number')
#elif not birth_year in range(1800, datetime.now().year + 1):
# print('Your text about birth_year - out of range')
else:
break
except ValueError:
print('Use only digits')
while True:
try:
birth_month = int(input('What month numerically? (EX: December=12) '))
if not len(str(birth_month)) in [1, 2]:
print('Month must to be one or two digits number')
elif not birth_month in range(1,13):
print('Wrong month number')
else:
break
except ValueError:
print('Use only digits')
while True:
try:
birth_day = int(input(f'And what day of the month of {calendar.month_name[birth_month]}? '))
if not len(str(birth_day)) in [1, 2]:
print('Day must to be one or two digits number')
elif not birth_day in range(1,32):
print('Wrong day number')
else:
break
except ValueError:
print('Use only digits')
while True:
print('\n SEE YOUR EXACT AGE IN:')
print(' 1. DAYS ONLY \n 2. MONTHS AND DAYS ONLY \n 3. YEARS MONTHS AND DAYS')
selection = input('\nENTER A NUMBER: ')
if not selection in ['1', '2', '3']:
print('Please, use right option number')
else:
break
clearScreen()
print(name, show_age(birth_year, birth_month, birth_day, selection))
repeat = input('\nWould you like to try again? (Y/N): ')
clearScreen()
print('Thanks for stopping by', name)
