Write a program to calculate age:
from datetime import datetime dob = input("Enter your Date of Birth (yyyy-mm-dd): ") dob_date = datetime.strptime(dob, "%Y-%m-%d") print(dob_date) current_date = datetime.now() age = current_date.year - dob_date.year print(f"Your age is {age}") datetime.now()-datetime.now() is a function in Python's datetime module that returns the current local date and time, including microseconds, as a datetime object.
strptime()-The strptime() method in Python is used to parse (convert) a string representing a date and/or time into a datetime object. It is part of the datetime module.
Enter your Date of Birth (yyyy-mm-dd): 1993-03-26 1993-03-26 00:00:00 Your age is 31 Another method:
If we have result in negative numbers, use this method
from datetime import date birth_year = 1993 birth_month = 3 birth_day = 26 today = date.today() year = today.year - birth_year month = today.month - birth_month days = today.day - birth_day if month<0: year = year - 1 month = 12+month if days<0: month=month-1 days = 30 + days print (f"You are {year} Years {month} Months {days} Days Old") You are 31 Years 7 Months 29 Days Old Alternate method using relativedelta:
from datetime import datetime from dateutil.relativedelta import relativedelta dob = input("Enter date of birth in yyyy-mm-dd format: ") dob_date = datetime.strptime(dob, "%Y-%m-%d") today = datetime.now() difference = relativedelta(today, dob_date) print(difference.years, " Years ", difference.months, " Months ", difference.days, " days") relativedelta is a part of the dateutil module in Python, which provides more powerful operations for date and time manipulation than the standard library's timedelta. It allows you to perform operations like adding or subtracting months and years, which timedelta cannot handle directly.
Enter date of birth in yyyy-mm-dd format: 1993-03-26 31 Years 7 Months 30 days Some Examples for while looping:
no = 1 while no<=5: print(no, end=' ') no+=1 1 1 1 1 1 no = 1 while no<=10: print(no, end=' ') no+=1 1 2 3 4 5 6 7 8 9 10 no = 10 while no>=1: print(no, end=' ') no-=1 10 9 8 7 6 5 4 3 2 1 no = 1 while no<=10: print(no, end=' ') no+=2 1 3 5 7 9 no=2 while no<=10: print(no, end=' ') no+=2 2 4 6 8 10 no = 3 while no<=10: print(no, end=' ') no+=3 3 6 9 no = 1 total = 0 while no<=5: total = total + no no+=1 print(total) 15 no = 1 while no<=5: print(no*3, end=' ') no+=1 3 6 9 12 15 no = 1 while no<=10: print(no,"*5=",no*5, end='\n') no+=1 1 *5= 5 2 *5= 10 3 *5= 15 4 *5= 20 5 *5= 25 6 *5= 30 7 *5= 35 8 *5= 40 9 *5= 45 10 *5= 50 no = 1 while no<=10: print(no, end = ' ') if no==9: no = 0 no+=2 1 3 5 7 9 2 4 6 8 10 num=1 while num<=5: print(num,end=" ") num+=1 num=5 while num>=1: print(num,end=" ") num-=1 1 2 3 4 5 5 4 3 2 1 
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