how to get the ordinal number in list

[luofeiyu]

 >>> x=["x1","x3","x7","x5","x3"]
 >>> x.index("x3")
1
if i want the result of 1 and 4 ?

On 8/8/2014 7:25 PM, Larry Martell wrote:
> 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)