Python Tutorial for Beginners - While Loop with User Input - What is the result of -1 + 1?

 👨‍🏫 4K | Microsoft Visual Studio 2022 - Python Tutorial - Python for Beginners - While Loop with User Input | What is the result of -1 + 1?

In this video tutorial you will learn:

- Python if else statement

- Get user input to stop a while loop

- While loop to check for valid user input

- Asking the user for input until they give a valid response

- How would I use a while loop to keep requesting user input

- Exception and Error Handling in Python

- Python Exception Handling Using try and except statement

Python Source Code by iBasskung.

# Python Comment: Loop until a specific user input Demo by iBasskung.

# Python while loop

while True:

    fullname = input("Please enter your full name: ")

    # Check empty string.

    if (fullname and not fullname.isspace()):

        # Remove spaces at the beginning and at the end of the string.

        # using the strip() method.

        print("\nHello, " + fullname.strip() + "!\n") # \n = new line.

        # Terminates the current loop.

        break

    else:

        print("\nThe string is empty.\n")

        # Continues to the next iteration.

        continue

answer = -1 + 1

while True:

    # Python Exception Handling.

    try:

        # Convert user input to a number using int() function.

        result = int(input("What is the result of -1 + 1? "))

        if(result == answer):

            break

        else:

            print("\nYour answer is incorrect. Try again...\n")

            continue

    except ValueError:

        print("\nPlease input integer only...\n")

        continue

print("\nYour answer is " + str(result) + "." + " That's correct!\n")

print("Thanks so much for watching. Pleae like my video ^_^\n")

#END

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