input vs. raw_input: Python Interactive Shell Application?
interactive, python, shell, undefined
Solution
You're running it under Python 2.x, where `input()` actually evaluates what you type as a Python expression. Thus, it's looking for a variable named `hello`, and, since you haven't defined one, it throws the error. Either use Python 3.x, or use `raw_input()`.
From the parentheses in your `print` I assume you intended to run it under Python 3.x.
Problem
I was working off of the answer in this question: Python Interactive Shell Type Application My code looks like this ``` def main(): while True: s = input('> ') if s == 'hello': print('hi') if s == 'exit': break if __name__ == "__main__": main() ``` If I run it, and type hello, I get ``` File "<string>", line 1, in <module> NameError: name 'hello' is not defined ``` How should I be listening for text, and calling different functions based on the result?