test_complex.py fails with Python 2.3.5

On r347xx, with Python 2.3.5
I modified linecache.py, to make getlines return [] to not have a crash when test fails.

Then I launched test_complex.py
All tests are okay, but 3: test_pow, test_abs, test_repr for complex
For those tests, first array contains .0 when second one contains some 0.0

The two first might be related to convention call from stubs.c from msvcrt.dll

test_repr says that 1 + 6j differs from 16j.

Failing test is:
self.assertEqual(repr(1+6j), '(1+6j)')