[3.7] bpo-33954: Fix _PyUnicode_InsertThousandsGrouping() (GH-10623)#10717

miss-islington wants to merge 1 commit intopython:3.7python/cpython:3.7from

miss-islington:backport-59423e3-3.7miss-islington/cpython:backport-59423e3-3.7Copy head branch name to clipboard