how to get the ordinal number in list

[Larry Martell]

On Sat, Aug 9, 2014 at 1:22 PM, luofeiyu <elearn2014 at gmail.com> wrote:
>>>> x=["x1","x3","x7","x5"]
>>>> y="x3"
>
>  how can i get the ordinal number by some codes?
>
> for id ,value in enumerate(x):
>     if y==value : print(id)
>
> Is more simple way to do that?

print x.index(y)