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, 4 insertions, 2 deletions

diff --git a/tests/internal_bench/bytebuf-2-join_map_bytes.py b/tests/internal_bench/bytebuf-2-join_map_bytes.py
index daa622991..9ecee4797 100644
--- a/tests/internal_bench/bytebuf-2-join_map_bytes.py
+++ b/tests/internal_bench/bytebuf-2-join_map_bytes.py
@@ -4,9 +4,11 @@
 # this is slowest way to do it.
 import bench
 
+
 def test(num):
-    for i in iter(range(num//10000)):
+    for i in iter(range(num // 10000)):
         ba = bytearray(b"\0" * 1000)
-        ba2 = b''.join(map(lambda x:bytes([x + 1]), ba))
+        ba2 = b"".join(map(lambda x: bytes([x + 1]), ba))
+
 
 bench.run(test)