# dmypy > Type check Python code, running `mypy` as a daemon for better speed. > See also: `mypy` for more options to use with check and run. > More information: . - Type check a file, and start the daemon if it is not running: `dmypy check -- {{path/to/file.py}}` - Start the daemon: `dmypy start` - Type check a file (requires the daemon to be running): `dmypy run -- {{path/to/file.py}}` - Stop the daemon: `dmypy stop`