Code (so far)

from random import randint
import math

def strong_pass(password):
    if len(password) < 8:
        print("Password is less than 8 characters and is therefore weak, please try again.")
        password = input("Please enter a new password: ")
        strong_pass(password)
    elif password.islower():
        print("Password has no capitals and is therefore weak, please try again.")
        password = input("Please enter a new password: ")
        strong_pass(password)
    else:
        print("Password is valid.\nWelcome " + username + " to area trainer!")


def shapes(task):
    if task.lower() == 'rectangle':
        print(" _______\n|       |\n|       |\n|       |\n|       |\n|_______|\n \n Base = " + str(x) + "  and   Height = " + str(y))
        answer = input("\n Please type the correct answer: A, B or C.\n A = " + str(z1) + "\n B = " + str(c1) + "\n C = " + str(w1) + "\n")
        if answer.upper() == "B":
            print("That's the correct answer!")
            response = input("Would you like to try again?\nYes or no?: ")
            retry(response)
        elif answer.upper() == "A" or "C":
            print("That's incorrect. Remember, the formula is base x height. Please choose a different letter: ")
            answer = input("")
            if answer.upper() == "B":
                print("That's the correct answer!")
                response = input("Would you like to try again?\nYes or no?: ")
                retry(response)
            else:
                print("That's incorrect again. The correct answer was " + str(c1))
                response = input("Would you like to try again?\nYes or no?: ")
                retry(response)
        else:
            print("Invalid input.")
            task = input("Please select a task: ")
            shapes(task)

    elif task.lower() == 'triangle':
        print("     /|\n    / |\n   /  |\n  /   |\n /____|\n \n Base = " + str(x) + "  and    Perpendicular Height = " + str(y))
        answer = input("\n Please type the correct answer: A, B or C.\n A = " + str(c2) + "\n B = " + str(z2) + "\n C = " + str(w2) + "\n")
        if answer.upper() == "A":
            print("That's the correct answer!")
            response = input("Would you like to try again?\nYes or no?: ")
            retry(response)
        elif answer.upper() == "B" or "C":
            print("That's incorrect. Remember, the formula is base x height. Please choose a different letter: ")
            answer = input("")
            if answer.upper() == "A":
                print("That's the correct answer!")
                response = input("Would you like to try again?\nYes or no?: ")
                retry(response)
            else:
                print("That's incorrect again. The correct answer was " + str(c2))
                response = input("Would you like to try again?\nYes or no?: ")
                retry(response)
        else:
            print("Invalid input.")
            task = input("Please select a task: ")
            shapes(task)
    elif task.lower() == 'circle':
        print("    *  *    \n *        * \n*          *\n*          *\n *        * \n    *  *    \n \n Radius = " + str(x))
        answer = input("\n Please type the correct answer: A, B or C.\n A = " + str(w3) + "\n B = " + str(z3) + "\n C = " + str(c3) + "\n")
        if answer.upper() == "C":
            print("That's the correct answer!")
            response = input("Would you like to try again?\nYes or no?: ")
            retry(response)
        elif answer.upper() == "A" or "B":
            print("That's incorrect. Remember, the formula is base x height. Please choose a different letter: ")
            answer = input("")
            if answer.upper() == "C":
                print("That's the correct answer!")
                response = input("Would you like to try again?\nYes or no?: ")
                retry(response)
            else:
                print("That's incorrect again. The correct answer was " + str(c3))
                response = input("Would you like to try again?\nYes or no?: ")
                retry(response)
        else:
            print("Invalid input.")
            task = input("Please select a task: ")
            shapes(task)
    else:
        print("Invalid input")
        task = input("Please enter a valid option: ")
        shapes(task)


def retry(response):
    if response.lower() == "yes":
        task = input("Please select a task:\nRectangle\nTriangle\nCircle\n")
        shapes(task)
    elif response.lower() == "no":
        print("Thank you for playing Area Trainer")
    else:
        print("Invalid input.")
        response = input("Please enter either Yes or No: ")
        retry(response)


def score(answer):
    if answer.lower == "a":
        print("a")


username = input("Please enter a username: ")
password = input("Please enter a password: ")

x = randint(1, 10)
y = randint(1, 10)

# Rectangle Variables
z1 = (x * y) + randint(-5, -1)
w1 = (x * y) + randint(1, 5)
c1 = x * y

# Triangle Variables
z2 = ((0.5 * x) *y) + randint(-5, -1)
w2 = ((0.5 * x) *y) + randint(1, 5)
c2 = (0.5 * x) *y

# Circle Variables
z3 = (math.pi * x * x) + randint(-5, -1)
w3 = (math.pi * x * x) + randint(1, 5)
c3 = math.pi * (x*x)

strong_pass(password)

task = input("Please select a task:\nRectangle\nTriangle\nCircle\n")
shapes(task)