Prompt the user to input something else if the first input is invalid

Question

I\'m very new to Python, so forgive my newbish question. I have the following code:

[a while loop starts]

print \'Input the first data as 10 characters from         


        

Answer 1

To go on with the next loop iteration, you can use the continue statement.

I'd usually factor out the input to a dedicated function:

def get_input(prompt):
    while True:
        s = raw_input(prompt)
        if len(s) == 10 and set(s).issubset("abcdef"):
            return s
        print("The only valid inputs are 10-character "
              "strings containing letters a-f.")