def train(self, debug=True, force=False, single_thread=False, timeout=<NUM_LIT:20>):
if not self.must_train and not force:<EOL><INDENT>return<EOL><DEDENT>self.padaos.compile()<EOL>self.train_thread = Thread(target=self._train, kwargs=dict(<EOL>debug=debug,<EOL>single_thread=single_thread,<EOL>timeout=timeout<EOL>), daemon=True)<EOL>self.train_thread.start()<EOL>self.train_thread.join(timeout)<EOL>self.must_train = False<EOL>return not self.train_thread.is_alive()<EOL>
Trains all the loaded intents that need to be updated
If a cache file exists with the same hash as the intent file,
the intent will not be trained and just loaded from file

Args:
    debug (bool): Whether to print a message to stdout each time a new intent is trained
    force (bool): Whether to force training if already finished
    single_thread (bool): Whether to force running in a single thread
    timeout (float): Seconds before cancelling training
Returns:
    bool: True if training succeeded without timeout