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-rw-r--r--lib/sqlalchemy/ext/asyncio/engine.py23
1 files changed, 23 insertions, 0 deletions
diff --git a/lib/sqlalchemy/ext/asyncio/engine.py b/lib/sqlalchemy/ext/asyncio/engine.py
index 67d944b9c..476d5515c 100644
--- a/lib/sqlalchemy/ext/asyncio/engine.py
+++ b/lib/sqlalchemy/ext/asyncio/engine.py
@@ -42,6 +42,29 @@ def create_async_engine(*arg, **kw):
return AsyncEngine(sync_engine)
+def async_engine_from_config(configuration, prefix="sqlalchemy.", **kwargs):
+ """Create a new AsyncEngine instance using a configuration dictionary.
+
+ This function is analogous to the :func:`_sa.engine_from_config` function
+ in SQLAlchemy Core, except that the requested dialect must be an
+ asyncio-compatible dialect such as :ref:`dialect-postgresql-asyncpg`.
+ The argument signature of the function is identical to that
+ of :func:`_sa.engine_from_config`.
+
+ .. versionadded:: 1.4.29
+
+ """
+ options = {
+ key[len(prefix) :]: value
+ for key, value in configuration.items()
+ if key.startswith(prefix)
+ }
+ options["_coerce_config"] = True
+ options.update(kwargs)
+ url = options.pop("url")
+ return create_async_engine(url, **options)
+
+
class AsyncConnectable:
__slots__ = "_slots_dispatch", "__weakref__"