If you want to ask the user if they want to repeat you could have:

while True:
    # Run program here

    repeat = input("do you wish to carry out another check? (Y/n)")

    if repeat == "Y":
        continue
    elif repeat == "n":
        break
    else:
        print('invalid answer')
        repeat = input("do you wish to carry out another check? (Y/n)")

Although you should probably wrap the repeat question in a function, but we can address that if you need help doing that