tests: Format all Python code with black, except tests in basics subdir.

This adds the Python files in the tests/ directory to be formatted with
./tools/codeformat.py.  The basics/ subdirectory is excluded for now so we
aren't changing too much at once.

In a few places `# fmt: off`/`# fmt: on` was used where the code had
special formatting for readability or where the test was actually testing
the specific formatting.

1 files changed, 2 insertions, 0 deletions

diff --git a/tests/float/float_compare.py b/tests/float/float_compare.py
index 105923ac7..c177aa7e8 100644
--- a/tests/float/float_compare.py
+++ b/tests/float/float_compare.py
@@ -1,8 +1,10 @@
 # Extended float comparisons
 
+
 class Foo:
     pass
 
+
 foo = Foo()
 
 print(foo == 1.0)