Functions.py

def welcome():
    print("Introduction to function")


welcome()


def name():
    name = input("Enter your Name:")
    print(name, "Welcome to Python 101")


name()


def add():
    number1 = int(input("Number 1 is:"))
    number2 = int(input("Number 2 is:"))
    sum = number1 + number2
    print("Sum of two numbers is:", sum)


add()


def product():
    number1 = int(input("Number 1 is:"))
    number2 = int(input("Number 2 is:"))
    result = number1 * number2
    print("Product of two numbers is:", result)


product()


def difference():
    number1 = int(input("Number 1 is:"))
    number2 = int(input("Number 2 is:"))
    result = number1 - number2
    print("Difference of two numbers is:", result)


difference()


def division():
    number1 = int(input("Number 1 is:"))
    number2 = int(input("Number 2 is:"))
    result = number1 / number2
    print("Division of two numbers is:", result)


division()


def addNumbers(x, y):
    sum = x + y
    return sum


output = addNumbers(12, 9)
print(output)


def diffNumbers(x, y):
    diff = x - y
    return diff


output = diffNumbers(12, 9)
print(output)


def productOfNumber(x, y):
    product = x * y
    return product


output = productOfNumber(12, 9)
print(output)


def divisionOfNumber(x, y):
    division = x / y
    return division


output = divisionOfNumber(12, 3)
print(output)


def myFruits(f1, f2, f3, f4):
    FruitsList = [f1, f2, f3, f4]
    return FruitsList


output = myFruits("Apple", "Banana", "Grapes", "Orange")
print(output)


def myAnimals(a1, a2, a3):
    Animalgroup = {'Kitten': a1, 'Puppy': a2, 'Pup': a3}
    return Animalgroup


output = myAnimals("Cat", "Dog", "Rat")
print(output)


def max_of_two(x, y):
    if x > y:
        return x
    return y


def max_of_three(x, y, z):
    return max_of_two(x, max_of_two(y, z))


print(max_of_two(3, 6))
print(max_of_three(3, 6, -5))


def myChocolates(cList):
    for i in cList:
        print(i)


chocolateList = ["Dairy Milk", "Snickers", "Kitkat"]
myChocolates(chocolateList)


def Calendar(year, month, date=''):
    print(year, month, date)


Calendar(2023, 2, 14)


def SwapTwoNumbers(a, b):
    print("Before Swap: ", a, b)
    a = a + b
    b = a - b
    a = a - b
    return a, b


a, b = SwapTwoNumbers(17, 24)
print("After Swap: ", a, b)


def palindromeCheck(num):
    temp = num
    rev = 0
    while num != 0:
        r = num % 10
        rev = rev * 10 + r
        num = num // 10
    if rev == temp:
        print(temp, "is a palindrome number")
    else:
        print(temp, "is not a palindrome number")


palindromeCheck(131)
palindromeCheck(34)


def factorial(n):
    fact = 1
    while n != 0:
        fact *= n
        n = n - 1
    print("The factorial is", fact)


inputNumber = int(input("Enter the number: "))
factorial(inputNumber)


# function with default argument
def show_employee(name, salary=9000):
    print("Name:", name, "salary:", salary)


show_employee("Ben", 12000)
show_employee("Jessa")


# Python function to sum all the numbers in a list.
def sum(numbers):
    total = 0
    for x in numbers:
        total += x
    return total


print(sum((8, 2, 3, 0, 7)))


def carea(radius):
    area = 3.14 * radius * radius
    print('Area of circle is', area)


a = 5
carea(a)


def isPrime(number):
    for i in range(2, number):
        if number % i == 0:
            return False
    return True


def main():
    for n in range(100, 501):
        if isPrime(n):
            print(n, end=' ')


main()


def show_choices():
    print('\nMenu')
    print('1. Add')
    print('2. Subtract')
    print('3. Multiply')
    print('4. Divide')
    print('5. Exit')


def add(a, b):
    return a + b


def subtract(a, b):
    return a - b


def multiply(a, b):
    return a * b


def divide(a, b):
    return a / b


def main():
    while True:
        show_choices()
        choice = input('Enter choice(1-5): ')
        if choice == '1':
            x = int(input('Enter first number: '))
            y = int(input('Enter second number: '))
            print('Sum =', add(x, y))

        elif choice == '2':
            x = int(input('Enter first number: '))
            y = int(input('Enter second number: '))
            print('Difference =', subtract(x, y))

        elif choice == '3':
            x = int(input('Enter first number: '))
            y = int(input('Enter second number: '))
            print('Product =', multiply(x, y))

        elif choice == '4':
            x = int(input('Enter first number: '))
            y = int(input('Enter second number: '))
            if y == 0:
                print('Error!! divide by zero')
            else:
                print('Quotient =', divide(x, y))

        elif choice == '5':
            break

        else:
            print('Invalid input')


main()