gh-95605: Fix `float(s)` error message when `s` contains only whitespace (GH-95665) (GH-95858)

This PR fixes the error message from float(s) in the case where s contains only whitespace.
(cherry picked from commit 97e9cfa75a80b54a0630b7371f35e368a12749d1)

Co-authored-by: Mark Dickinson <dickinsm@gmail.com>

Miss Islington (bot) committed 3y ago

3ea9ba647850442ade8aec2c84c7f20afd0fb7c4

Parent: 731732a

Committed by GitHub <noreply@github.com> on 8/11/2022, 4:16:53 PM