clean imports (delete imports, which are not used)

back/delete_db.py

@@ -1,6 +1,12 @@
-from sqlalchemy import Table, MetaData
-from .db import engine
+from sqlalchemy import Table, MetaData, text
+from .db import engine, Base
 
-tbl = Table('UserDatabase', MetaData(), autoload_with=engine)
-tbl.drop(engine, checkfirst=False)
-a = input()
+# tbl = Table('Poems', MetaData(), autoload_with=engine)
+# tbl.drop(engine, checkfirst=False)
+# a = input()
+
+# Base.metadata.drop_all(bind=engine)
+
+with engine.connect() as conn:
+    conn.execute(text("DELETE FROM alembic_version"))
+    conn.commit()