Improving ModuleList indexing error msg (#43361)
Summary:
Follow up to https://github.com/pytorch/pytorch/pull/41946/, to suggest enumerating a module as an alternative if a user tries indexing into a modulelist/sequential with a non-integer literal
Pull Request resolved: https://github.com/pytorch/pytorch/pull/43361
Reviewed By: mrshenli
Differential Revision: D23602388
Pulled By: eellison
fbshipit-source-id: 51fa28d5bc45720529b3d45e92d367ee6c9e3316
