Question

I am learning Python at the moment and I have hit an issue.
Observe this code:

while 1:
    print "How many lines do you want to add to this file?"

    number_of_lines = raw_input(">").strip()

    if not(number_of_lines.isdigit()) or number_of_lines > 10:
        print "Please try a number between 1 and 10 inclusive."
        continue

The code asks a user for a number, and checks it’s validity. However for some reason, the code always displays the error, even if the user does enter a valid number less than 10.

I have probably made a small error somewhere but I can’t figure it out… being a python novice!

Hope you can help! Thanks in advance.

Answer 1

When returned from raw_input, your number_of_lines variable is a string. You need to convert it to an integer before comparing with 10:

not(number_of_lines.isdigit()) or int(number_of_lines) > 10