focus: DatabaseManager.query @24-26
basic.py (3-57)
- import statements @3
- DatabaseManager @8 # Manages database connections and queries.
  - __init__ (self, connection_string: str) @11
  - connect (self) @15 # Establish database connection.
  - disconnect (self) @19 # Close database connection.
  - query (self, sql: str) -> list @24 # Execute a SQL query.
     24 |     def query(self, sql: str) -> list:
     25 |         """Execute a SQL query."""
     26 |         return []
- UserService @29 # Handles user-related operations.
- validate_email (email: str) -> bool @48 # Validate email format.
- main () @53 # Main entry point.
