3dc324d3f1
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.
This directory doesn't contain real tests, but code snippets to detect various interpreter features, which can't be/inconvenient to detecte by other means. Scripts here are executed by run-tests at the beginning of testsuite to decide what other test groups to run/exclude.