100 Days of Code: The Complete Python Pro Bootcamp for 2022 - Day 10 (Calculator)

Exercise 10.1 - Days in month

Instructions
In the starting code, you'll find the solution from the Leap Year challenge. First, convert this function is_leap() so that instead of printing "Leap year." or "Not leap year." it should return True if it is a leap year and return False if it is not a leap year.

You are then going to create a function called days_in_month() which will take a year and a month as inputs, e.g.

days_in_month(year=2022, month=2)
And it will use this information to work out the number of days in the month, then return that as the output, e.g.: 28

The List month_days contains the number of days in a month from January to December for a non-leap year. A leap year has 29 days in February.

def is_leap(year):
  if year % 4 == 0:
    if year % 100 == 0:
      if year % 400 == 0:
        return True
      else:
        return False
    else:
      return True
  else:
    return False

def days_in_month(year, month):
  month_days = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
  if month >12 or month <1:
      return "Invalid month"
  if is_leap(year) and month ==2:
      return 29
  return month_days[month -1]


#🚨 Do NOT change any of the code below 
year = int(input("Enter a year: "))
month = int(input("Enter a month: "))
days = days_in_month(year, month)
print(days)

Project 10 - Calculator

from replit import clear
from art import logo
print(logo)

#Calculator
def add(n1, n2):
  return n1 + n2

def subtract(n1, n2):
  return n1 - n2

def multiply(n1, n2):
  return n1 * n2

def divide(n1, n2):
  return n1 / n2

operations = {
  "+": add,
  "-": subtract,
  "*": multiply,
  "/": divide,
}

def calculator():
  num1 = float(input("Whats the first number?: "))
  for symbol in operations:
    print(symbol)

  should_continue = True

  while should_continue:
    operation_symbol = input("Pick an operation: ")
    num2 = float(input("Whats the next number?: "))
    calculation_function = operations[operation_symbol]
    answer = calculation_function(num1, num2)

    print(f"{num1} {operation_symbol} {num2} = {answer}")

    if input(f"Type 'y' to continue calculating with {answer}: type 'n' to start a new calculation: ") == "y":
      num1 = answer
    else:
      should_continue = False
      clear
      calculator()

calculator()