=?x-gbk?Q?=BB=D8=B8=B4=A3=BA_=28=29_vs_=5B=5D?=

[Terry Reedy]

SmokingDog wrote:

>  > Interesting interpretation.. but I just gave it a try.
>  >
>  >>>> a = (1,2,3,4)
>  >>>> a
>  > (1, 2, 3, 4)
>  >>>> a.index(3)
>  > 2
>  >>>> a.index(5)
>  > Traceback (most recent call last):
>  >  File "<stdin>", line 1, in <module>
>  > ValueError: tuple.index(x): x not in tuple
>  >
>  > So my Python is saying that tuples do implement .index() method. What 
> gives?
>  >
>  > Or maybe the diveintopython version he's quoting is out of date?
> 
> Apparently...or something stranger.

The OP did not indicate version, which posters should always do.

methods were added to tuples in 3.0 and perhaps 2.6.