how does the % work?

[leonardo selmi]

hi guys

i wrote this example :

name = raw_input("What is your name?")
quest = raw_input("What is your quest?")
color = raw_input("What is your favorite color?")

print """Ah, so your name is %s, your quest is %s, 
and your favorite color is %s."""  % (name, quest, color)

but i get this error:  Traceback (most recent call last):
  File "/Users/leonardo/print.py", line 5, in <module>
    favourite color is %s.''') % (name, quest, color)
TypeError: unsupported operand type(s) for %: 'NoneType' and 'tuple'

how can i solve it?

thanks!