How can i have a loop for the name until it is correct?

Question

import re
username = input("Enter your name to start the test: ")
#Prompting the user to input their name

valid = re.match("^[A-Za-z]*$",username)
#A validation of letters only being used

if not valid:
    print("Error! Letters only!")
    username = input("Enter your name: ")

Answer 1

why not use a while loop with your condition. Something like this, you fill in the details:

username = input("Enter your name to start the test: ")
while not re.match("^[A-Za-z]*$",username):
    print("Error! Letters only!")
    username = input("Enter your name: ")

Answer 2

Try this:

import re

valid = False

while not valid:
    username = input("Enter your name to start the test: ")
    valid = re.match("^[A-Za-z]*$", username)

    if not valid:
        print("Error! Letters only!")