raw_input() is not defined problem

Dear All,

I am a beginner for AI programming.

I was trying to simulate sample code... I failed...

What I did,..

I installed anaconda3 to run python code.. (I am familiar with python... so I used it.)

I downloaded sample Python code By toma..

And I run it... but is shows

raw_input() is not defined problem...

How can I solve this problem?