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extmod/uasyncio: Provide asyncio.iscoroutine function. #11526

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extmod/uasyncio: Provide asyncio.iscoroutine function. #11526

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4 changes: 4 additions & 0 deletions docs/library/uasyncio.rst
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Expand Up @@ -62,6 +62,10 @@ Core functions

This is a coroutine, and a MicroPython extension.

.. function:: iscoroutine(obj)

Return True if obj is a coroutine object.

Additional functions
--------------------

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7 changes: 6 additions & 1 deletion extmod/uasyncio/core.py
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Expand Up @@ -139,9 +139,14 @@ def _promote_to_task(aw):
return aw if isinstance(aw, Task) else create_task(aw)


# Return True if obj is a coroutine object
def iscoroutine(obj):
return hasattr(obj, "send")


# Create and schedule a new task from a coroutine
def create_task(coro):
if not hasattr(coro, "send"):
if not iscoroutine(coro):
raise TypeError("coroutine expected")
t = Task(coro, globals())
_task_queue.push(t)
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