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, 6 insertions, 2 deletions

diff --git a/tests/micropython/viper_binop_divmod.py b/tests/micropython/viper_binop_divmod.py
index 822424982..4b74b527d 100644
--- a/tests/micropython/viper_binop_divmod.py
+++ b/tests/micropython/viper_binop_divmod.py
@@ -1,16 +1,20 @@
 # test floor-division and modulo operators
 
+
 @micropython.viper
-def div(x:int, y:int) -> int:
+def div(x: int, y: int) -> int:
     return x // y
 
+
 @micropython.viper
-def mod(x:int, y:int) -> int:
+def mod(x: int, y: int) -> int:
     return x % y
 
+
 def dm(x, y):
     print(div(x, y), mod(x, y))
 
+
 for x in (-6, 6):
     for y in range(-7, 8):
         if y == 0: