all: Update Python code to conform to latest black formatting.

Updating to Black v20.8b1 there are two changes that affect the code in
this repository:

- If there is a trailing comma in a list (eg [], () or function call) then
  that list is now written out with one line per element.  So remove such
  trailing commas where the list should stay on one line.

- Spaces at the start of """ doc strings are removed.

Signed-off-by: Damien George <damien@micropython.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/extmod/uasyncio_gather.py b/tests/extmod/uasyncio_gather.py
index 2697a6278..0e2948b07 100644
--- a/tests/extmod/uasyncio_gather.py
+++ b/tests/extmod/uasyncio_gather.py
@@ -34,7 +34,7 @@ async def gather_task():
 
 async def main():
     # Simple gather with return values
-    print(await asyncio.gather(factorial("A", 2), factorial("B", 3), factorial("C", 4),))
+    print(await asyncio.gather(factorial("A", 2), factorial("B", 3), factorial("C", 4)))
 
     # Cancel a multi gather
     # TODO doesn't work, Task should not forward cancellation from gather to sub-task