Leap Year Check Python - Sample Code To Check Leap Year In Python & Return The Number of Days In A Particular Month | Python 100 Days Challenge Udemy Solution

We start with by writing a function called is_leap() that checks if the year entered is a leap year or not. You can check the link to understand more about leap year and how the below code has been built.

#Function to check whether the entered year is a leap year or not which will return

True or False(Boolen) based on the calculation.

def is_leap(year):

  leap_flag = False

  if year % 4 == 0:

    if year % 100 == 0:

      if year % 400 == 0:

        leap_flag = True

      else:

        leap_flag = False

    else:

      leap_flag = True

  else:

    leap_flag = False

  return leap_flag

#days_in_month() - This function has if-else blocs, where first blocks contains days

for non leap year and else block has days for leap year.

def days_in_month(year, month):

  leap_flag_val = is_leap(year)

  #The first if loop checks if the entered year is not a leap year and in the else

   loop it checks for the days in months list for a leap year.

  if leap_flag_val==False:

    month_days = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]  

    return month_days[month-1]

  else:

    month_days = [31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]  

    return month_days[month-1]

#You will enter the input values hear

year = int(input("Enter a year: "))

month = int(input("Enter a month: "))

days = days_in_month(year, month)

print(days)

Output: