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How to use start_if_necessary method in keyboard

Best Python code snippet using keyboard

_generic.py

Source:_generic.py

...19                    # Stop processing this hotkey.20                    return 121            except Exception as e:22                traceback.print_exc()23    def start_if_necessary(self):24        """25        Starts the listening thread if it wasn't already.26        """27        self.lock.acquire()28        try:29            if not self.listening:30                self.init()31                self.listening = True32                self.listening_thread = Thread(target=self.listen)33                self.listening_thread.daemon = True34                self.listening_thread.start()35                self.processing_thread = Thread(target=self.process)36                self.processing_thread.daemon = True37                self.processing_thread.start()38        finally:39            self.lock.release()40    def pre_process_event(self, event):41        raise NotImplementedError('This method should be implemented in the child class.')42    def process(self):43        """44        Loops over the underlying queue of events and processes them in order.45        """46        assert self.queue is not None47        while True:48            event = self.queue.get()49            if self.pre_process_event(event):50                self.invoke_handlers(event)51            self.queue.task_done()52            53    def add_handler(self, handler):54        """55        Adds a function to receive each event captured, starting the capturing56        process if necessary.57        """58        self.start_if_necessary()59        self.handlers.append(handler)60    def remove_handler(self, handler):61        """ Removes a previously added event handler. """...

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