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update async docs

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David Lord 2021-04-06 15:31:28 -07:00
parent 61fbae8664
commit dc3e9c0cc3
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7 changed files with 109 additions and 65 deletions
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9
src/flask/helpers.py
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@ -742,9 +742,10 @@ def run_async(func):
"Install Flask with the 'async' extra in order to use async views."
)
# Check that Werkzeug isn't using its fallback ContextVar class.
if ContextVar.__module__ == "werkzeug.local":
raise RuntimeError(
"async cannot be used with this combination of Python & Greenlet versions"
"Async cannot be used with this combination of Python & Greenlet versions."
)
@wraps(func)
@ -763,9 +764,9 @@ def run_async(func):
async def inner(*a, **k):
"""This restores the context before awaiting the func.
This is required as the func must be awaited within the
context. Simply calling func (as per the
copy_current_xxx_context functions) doesn't work as the
This is required as the function must be awaited within the
context. Only calling ``func`` (as per the
``copy_current_xxx_context`` functions) doesn't work as the
with block will close before the coroutine is awaited.
"""
if ctx is not None: