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, 8 insertions, 0 deletions

diff --git a/tests/micropython/heapalloc_yield_from.py b/tests/micropython/heapalloc_yield_from.py
index 8443210f3..58788b1db 100644
--- a/tests/micropython/heapalloc_yield_from.py
+++ b/tests/micropython/heapalloc_yield_from.py
@@ -6,8 +6,12 @@ import micropython
 def sub_gen(a):
     for i in range(a):
         yield i
+
+
 def gen(g):
     yield from g
+
+
 g = gen(sub_gen(4))
 micropython.heap_lock()
 print(next(g))
@@ -18,12 +22,16 @@ micropython.heap_unlock()
 class G:
     def __init__(self):
         self.value = 0
+
     def __iter__(self):
         return self
+
     def __next__(self):
         v = self.value
         self.value += 1
         return v
+
+
 g = gen(G())
 micropython.heap_lock()
 print(next(g))