My 1st Program

[buran]

Simple answer - this code is intended to run on python3 and you are running it on python2. As you are new to python - install python3 and use it, not python2. Support for python2 will end soon.

The reason behind the problem - in python2 one should use raw_input() instead of input(). In python2 input() evaluates the user input as if it is valid python code, while raw_input() just returns user input as string.
In python3 input() returns user input as string, so it is equivalent to raw_input() in python2.