[docs] [issue31942] Document that support of start and stop parameters in the Sequence's index() is optional

STINNER Victor victor.stinner@gmail.com added the comment:

See also bpo-31956: "Add start and stop parameters to the array.index()".

---------- nosy: +haypo

_______________________________________ Python tracker report@bugs.python.org https://bugs.python.org/issue31942 _______________________________________