Python syntax error when I use if on same line -

i must doing stupid don't see it. not following simple code work.

>>> def a_bigger_than_b(a,b): ...   'yes' if > b   file "<stdin>", line 2     'yes' if > b                  ^ syntaxerror: invalid syntax 

def a_bigger_than_b(a,b): ...   return 'yes' if > b else 'no!' 

actually using ternary operator in such case need else

i think must give else can understood by

first

c='yes' if > b 

what value if smaller b case ambiguous else must

correct syntax

c='yes' if > b else 'no!' 

a detailed explanation given here

*on 9/29/2005, guido decided add conditional expressions in     form of "x if c else y".      motivating use case prevalance of error-prone attempts     achieve same effect using "and" , "or".      previous community efforts add conditional expression     stymied lack of consensus on best syntax.  issue     resolved deferring bdfl best judgment call.*