[2.7] bpo-30855: Trying to fix test_use on Windows. (#2586)

* bpo-30855: Trying to fix test_use on Windows.

Avoid possible weird behavior of WideInt convertion.
"winfo id" always returns string hexadecimal representation.

(cherry picked from commit b9d672491d5082c541bf267eb7bb99fdc6529324)

* bpo-30855: Trying to fix test_use on Windows.

(cherry picked from commit 29a2f7c6b38e5a6ed891aa72af38974a1ff2d372)
(subTest() removed since it was introduced in Python 3)
2 files changed