main.py 文件源码

def start_gui(process):
    """
    A function that takes care of starting the GUI and stops the Scrapy crawler process when exited from program.

    :param CrawlerProcess process: The scrapy crawler process that is used to scrape the web. The instance is used for stopping the process.
    """

    def create_ui(screen):
        """
        A function passes to curses wrapper for safe execution of terminal GUI.

        :param screen: The screen parameter to run the GUI. Sent from the curses wrapper.
        """

        GUI.screen = screen  # All the statis variables of the GUI class is initialized
        GUI.strings = []  # the list of songs is empty initially
        GUI.init_display()  # init the variables required for GUI
        GUI.update_on_key()  # Starts a loop that waits for key input and acts accordingly

        curses.nocbreak()
        curses.echo()
        curses.endwin()
        GUI.gui_stopped = True

    curses.wrapper(create_ui)
    process.stop()  # Stopping the scrapy crawler process