GettingValidatedUserInput.py

# getting an integer
def getIntegerInput(prompt: str, lowerBound: int = None, upperBound: int = None) -> int:
    while True:
        userInput = input(prompt)
        try:
            userInput = int(userInput)

            if lowerBound and userInput < lowerBound:
                print(f"Input must be greater than or equal to {str(lowerBound)}")
            elif upperBound and userInput > upperBound:
                print(f"Input must be less than or equal to {str(upperBound)}")

        except ValueError:
            print(f"{userInput}: is not a valid integer")
            continue
        return userInput
        
# Example usages
Day = getIntegerInput("Enter the day which you were born in: ", 1, 31)
Month = getIntegerInput("Enter the number of the month you were born in: ", 1, 12)
Year = getIntegerInput("Enter the year you were born in: ", 1950)