plugable-matrix-bot/plugins/hello/hello.py

from matrix_bot_api.mregex_handler import MRegexHandler
import os

HELP_LOCATION = os.path.join(os.path.dirname(__file__), 'messages/help')

class Plugin:
    """ This is an example plugin with only a single callback. When
    a user says "Hello bot" in a room in which te bot is present,
    the user replies with "Hello <username>!".
    """

    def __init__(self, bot):
        # Define sensitivity
        self.handler = []

        self.handler.append(MRegexHandler("Hello", self.hello_callback, bot))

        # Save parent bot
        self.bot = bot

    def hello_callback(self, room, event):
        room.send_text(f"Hello {event['sender']}!")

    def help(self):
        return open(HELP_LOCATION, mode="r").read()

def setup():
    print("This function runs once, when the plugin is used the 1st time.")