Most cases here have `print(..., some_str)` changed to
`print(..., repr(some_str))`. This makes the empty string visible and
prevents bare trailing spaces.
Signed-off-by: Dan Halbert <halbert@halwitz.org>
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.