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alembic/env.py

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+from logging.config import fileConfig
+from sqlalchemy import pool
+from sqlalchemy.engine import Connection
+from sqlalchemy.ext.asyncio import async_engine_from_config
+from alembic import context
+import asyncio
+
+from app.models.base import Base
+from app.models import player, district
+from app.config import settings
+
+config = context.config
+config.set_main_option("sqlalchemy.url", settings.DATABASE_URL)
+
+target_metadata = Base.metadata
+
+def run_migrations_online():
+    connectable = async_engine_from_config(
+        config.get_section(config.config_ini_section),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+
+    async def do_migrations():
+        async with connectable.connect() as connection:
+            await connection.run_sync(
+                lambda conn: context.configure(
+                    connection=conn,
+                    target_metadata=target_metadata,
+                )
+            )
+            await connection.run_sync(context.run_migrations)
+
+    asyncio.run(do_migrations())
+
+run_migrations_online()