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, 1 deletions

diff --git a/tests/thread/thread_start1.py b/tests/thread/thread_start1.py
index d23a74aa2..f0e696840 100644
--- a/tests/thread/thread_start1.py
+++ b/tests/thread/thread_start1.py
@@ -8,16 +8,19 @@ except ImportError:
     import time
 import _thread
 
+
 def foo():
     pass
 
+
 def thread_entry(n):
     for i in range(n):
         foo()
 
+
 _thread.start_new_thread(thread_entry, (10,))
 _thread.start_new_thread(thread_entry, (20,))
 
 # wait for threads to finish
 time.sleep(1)
-print('done')
+print("done")