[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:

New changeset 78cd00b799be36a35c9f5cc99ce3bcef31112a5f by Victor Stinner (Miss Islington (bot)) in branch '3.6': bpo-31942: Document optional support of start and stop attributes in Sequence.index method (GH-4277) (#4811) https://github.com/python/cpython/commit/78cd00b799be36a35c9f5cc99ce3bcef311...

----------

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