context_manager.py
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async_pool.py
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singleton_meta.py
context_manager.py
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context_manager.py
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@contextmanager↵
def transaction(conn):↵
trans = conn.begin()↵
try:↵
yield conn↵
trans.commit()↵
except Exception:↵
trans.rollback()↵
raise↵
finally:↵
trans.close()↵
↵
async with transaction(db) as conn:↵
await conn.execute(query)
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