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add type for pool.acquire()#521

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add type for pool.acquire() #521

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e43e597
Update pool.py
Tynukua Jan 8, 2020
3028e1b
Merge branch 'master' into patch-1
Tynukua Jan 9, 2020
7d599ae
Merge branch 'master' into patch-1
Tynukua Jan 14, 2020
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2 changes: 1 addition & 1 deletion asyncpg/pool.py
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Expand Up@@ -566,7 +566,7 @@ async def fetchrow(self, query, *args, timeout=None):
async with self.acquire() as con:
return await con.fetchrow(query, *args, timeout=timeout)

def acquire(self, *, timeout=None):
def acquire(self, *, timeout=None) -> connection.Connection:

@and-semakinand-semakinJun 22, 2021

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This type hint only covers usual await case:

con=awaitpool.acquire()

But won't work properly for context manager case:

asyncwithpool.acquire() ascon:
awaitcon.execute(...)

The more correct return type could be something like PoolAcquireContext but we should check if mypy understands it first.

@and-semakinand-semakinJun 22, 2021

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#577 contains more precise types

"""Acquire a database connection from the pool.

:param float timeout: A timeout for acquiring a Connection.
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