有一个bot在发送到telegram频道时编辑发送的消息并在那里添加inlinekeyboardmarkup,如何在bot编辑消息时发表评论?
def update_message(update, context):
keyboard = [[InlineKeyboardButton("To begin", callback_data='begin'),
InlineKeyboardButton("To finish", callback_data='finish')]]
reply_markup = InlineKeyboardMarkup(keyboard)
context.bot.edit_message_reply_markup(chat_id=update.effective_chat.id,
message_id=update.channel_post.message_id,
reply_markup=reply_markup)