CS50 Sentimental staff

cash.py

from cs50 import get_float
import decimal

def main():

    ## Ask how many dollars the customer is owed
    while True:
        dollars = get_float("Change owned: ")
        if dollars > 0:
            break
        
    ## Calculate the number of quarters to give the customer
    quarters = calculate_quarters(dollars)
    dollars = dollars - quarters * 0.25
    dollars = round(dollars, 2)

    ## Calculate the number of dimes to give the customer
    dimes = calculate_dimes(dollars)
    dollars = dollars - dimes * 0.10
    dollars = round(dollars, 2)

    ## Calculate the number of nickles to givw the customer
    nickles = calculate_nickels(dollars)
    dollars = dollars - nickles * 0.05
    dollars = round(dollars, 2)

    ## Calculate the number of pennies to give the customer
    pennies = calculate_pennies(dollars)
    dollars = dollars - pennies * 0.01
    dollars = round(dollars, 2)

    ## Sum coins
    coins = quarters + dimes + nickles + pennies

    ## Print total number of coins to give the customer
    print(int(coins))

def calculate_quarters(dollars):

    quarters = 0.00

    while (dollars >= 0.25):

        dollars = dollars - 0.25
        quarters += 1

    return quarters

def calculate_dimes(dollars):

    dimes = 0.00

    while (dollars >= 0.10):

        dollars = dollars - 0.10
        dimes += 1

    return dimes

def calculate_nickels(dollars):

    nickels = 0.00

    while (dollars >= 0.05):

        dollars = dollars - 0.05
        nickels += 1

    return nickels

def calculate_pennies(dollars):

    pennies = 0.00

    while (dollars >= 0.01):

        dollars = dollars - 0.01
        pennies += 1

    return pennies

main()

credit.py

def main():

    num = input("Number: ")

    if (len(num) / 15) == 1:

        if num.startswith('34') or num.startswith('37'):
            print("AMEX")
        else:
            print("INVALID")

    elif (len(num) / 16) == 1:

        for i in range(51, 56):
            if num.startswith(str(i)):
                print("MASTERCARD")

        if num.startswith('4'):
            if visa(num) == True:
                print("VISA")
            else:
                print("INVALID")

        else:
            print("INVALID")

    elif (len(num) / 13) == 1:

        if num.startswith('4'):
            if visa(num) == True:
                print("VISA")

            else:
                print("INVALID")

        else:
            print("INVALID")

    else:
        print("INVALID")


def visa(num):

    x = 0
    y = 0
    z = 0
    number = ''

    for i in range(len(num)-2, -1, -2):
        x = int(num[i]) * 2
        number += str(x)

    for i in range(len(number)):
        z += int(number[i])

    for i in range(len(num)-1, -1, -2):
        y += int(num[i])

    if (z + y) % 10 == 0 :
        return True

    else:
        return False

main()

mario.py

# TODO
from cs50 import get_int

## promp user for valide input
while True:
    try:
        num = get_int("Height: ")
        if num < 1 or num > 8:
            raise ValueError
        break
    except ValueError:
        print("Invalid input")

## print each char with its oun loop
for r in range(num):
    for s in range(num - r - 1, 0, -1):
        print(" ", end="")
    for h in range(r + 1):
        print("#", end="")
    print("  ", end="")
    for rh in range(r+1):
        print("#", end="")
    print("\n", end="")

readability.py

def main():

    text = input("Text: ")
    text = text.lower()
    leters_count = 0
    words_count = 0
    sentences_count = 0
    for char in "abcdefghijklmnopqrstuvwxyz":
        leters = text.count(char)
        leters_count += leters

    words_count = text.count(" ") + 1

    for char in ".!?":
        sentence = text.count(char)
        sentences_count += sentence

    L = leters_count / words_count * 100

    S = sentences_count / words_count * 100

    subindex = 0.0588 * L - 0.296 * S - 15.8

    index = round(subindex)

    if (index < 1):
        print("Before Grade 1")
    elif (index > 16):
        print("Grade 16+")
    else:
        print(f"Grade {index}")


main()