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Simplify example code in asyncio docs #131209

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20 changes: 10 additions & 10 deletions Doc/library/asyncio-task.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -61,12 +61,12 @@ To actually run a coroutine, asyncio provides the following mechanisms:
print(what)

async def main():
print(f"started at {time.strftime('%X')}")
print(f"started at {time:%X}")

await say_after(1, 'hello')
await say_after(2, 'world')

print(f"finished at {time.strftime('%X')}")
print(f"finished at {time:%X}")

asyncio.run(main())

Expand All @@ -90,14 +90,14 @@ To actually run a coroutine, asyncio provides the following mechanisms:
task2 = asyncio.create_task(
say_after(2, 'world'))

print(f"started at {time.strftime('%X')}")
print(f"started at {time:%X}")

# Wait until both tasks are completed (should take
# around 2 seconds.)
await task1
await task2

print(f"finished at {time.strftime('%X')}")
print(f"finished at {time:%X}")

Note that expected output now shows that the snippet runs
1 second faster than before::
Expand All @@ -119,11 +119,11 @@ To actually run a coroutine, asyncio provides the following mechanisms:
task2 = tg.create_task(
say_after(2, 'world'))

print(f"started at {time.strftime('%X')}")
print(f"started at {time:%X}")

# The await is implicit when the context manager exits.

print(f"finished at {time.strftime('%X')}")
print(f"finished at {time:%X}")

The timing and output should be the same as for the previous version.

Expand Down Expand Up @@ -1018,20 +1018,20 @@ Running in Threads
they were run in the main thread. For example::

def blocking_io():
print(f"start blocking_io at {time.strftime('%X')}")
print(f"start blocking_io at {time:%X}")
# Note that time.sleep() can be replaced with any blocking
# IO-bound operation, such as file operations.
time.sleep(1)
print(f"blocking_io complete at {time.strftime('%X')}")
print(f"blocking_io complete at {time:%X}")

async def main():
print(f"started main at {time.strftime('%X')}")
print(f"started main at {time:%X}")

await asyncio.gather(
asyncio.to_thread(blocking_io),
asyncio.sleep(1))

print(f"finished main at {time.strftime('%X')}")
print(f"finished main at {time:%X}")


asyncio.run(main())
Expand Down
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