test_ctypes on Windows prints unnecessary information

[Eclips4]

Bug report

Bug description:

 ./python -m test -R 3:3 test_ctypes
Running Debug|x64 interpreter...
Using random seed: 212491410
0:00:00 Run 1 test sequentially
0:00:00 [1/1] test_ctypes
beginning 6 repetitions
123456
a=5, b=10, c=15
a=5, b=10, c=15
.a=5, b=10, c=15
a=5, b=10, c=15
.a=5, b=10, c=15
a=5, b=10, c=15
.a=5, b=10, c=15
a=5, b=10, c=15
.a=5, b=10, c=15
a=5, b=10, c=15
.a=5, b=10, c=15
a=5, b=10, c=15
.

== Tests result: SUCCESS ==

1 test OK.

Total duration: 24.7 sec
Total tests: run=541 skipped=19
Total test files: run=1/1
Result: SUCCESS

CPython versions tested on:

3.12, CPython main branch

Operating systems tested on:

Windows

Linked PRs

• gh-115567: Catch test_ctypes.test_callbacks.test_i38748_stackCorruption stdout output #115568
• [3.12] gh-115567: Catch test_ctypes.test_callbacks.test_i38748_stackCorruption stdout output (GH-115568) #115609