Why does input work in Python 3.x and not 2.7?

Question

I ran this same code with just a few minor differences in syntax to suit the right mode of script in Python version 2.7.9 and also in Python 3.4.2

Script I ran in Python 2:

name=input("tell me your name:")
print 'Hello',str(name),'!'

root@hikerpath:~/Área de trabalho# python teste3.py
tell me your name:joao
Traceback (most recent call last):
  File "teste3.py", line 1, in <module>
    name=input("tell me your name:")
  File "<string>", line 1, in <module>
NameError: name 'joao' is not defined
root@hikerpath:~/Área de trabalho#

Script I ran in Python 3:

name=input("tell me your name:")
print("Hello",str(name),"!")

root@hikerpath:~/Área de trabalho# python3 teste2.py
tell me your name:joao
Hello joao !
root@hikerpath:~/Área de trabalho#

What is missing from the code I have placed in Python 2, to give the error of string?

Answer 1

Use raw_input() to read strings in Python 2:

name = raw_input("tell me your name:")
print 'Hello', str(name), '!'

Behold working in the ideone. And in the repl it.. Also put on the Github for future reference.

In Python 3 they are synonymous, so it works with input().