Day_of_week.py

# Python program to Find day of
# the week for a given date
import re  # regular expressions
import calendar  # module of python to provide useful fucntions related to calendar
import datetime  # module of python to get the date and time


def process_date(user_input):
    user_input = re.sub(r"/", " ", user_input)  # substitute / with space
    user_input = re.sub(r"-", " ", user_input)  # substitute - with space
    return user_input


def find_day(date):
    born = datetime.datetime.strptime(
        date, "%d %m %Y"
    ).weekday()  # this statement returns an integer corresponding to the day of the week
    return calendar.day_name[
        born
    ]  # this statement returns the corresponding day name to the integer generated in the previous statement


# To get the input from the user
# User may type 1/2/1999 or 1-2-1999
# To overcome those we have to process user input and make it standard to accept as defined by  calender and time module
user_input = str(input("Enter date     "))
date = process_date(user_input)
print("Day on " + user_input + "  is " + find_day(date))