TG Bot on Python

__author__ = "byStarTW"
import telepot # pip install telepot
import time
import os
if os.name == "nt":
    os.system ('cls')
    os.system ('title Telegram Bot 訊息傳送')
else:
    os.system ('clear')
# settings
token = ('') # your bot token! (@botfather)
bot = telepot.Bot(token)
def sendMessage(chat_id, message):
    bot.sendMessage(chat_id, message)
def sendMessage_markdown(chat_id, message):
    bot.sendMessage(chat_id, message, 'markdown')
chat_id = str('') # chat_id
# confim settings
if chat_id == (''):
    print ("未設定 chat_id")
    exit()
if token == (''):
    print ("未設定 TG token")
    exit()
# Main Menu
msgMode = input("請輸入輸出文字模式 (Plain Text / Markdown): ")
if msgMode == "Plain Text":
    msgMode = "False"
elif msgMode == "Markdown":
    msgMode = "True"
else:
    exit()
msgText = input("請輸入輸出的文字: ")
if msgText != "":
    msgText2 = input("你確定要輸出 '" + msgText + "' 嗎？ (Yes / No): " )
    if msgText2 == "Yes":
        if msgMode == "False":
            print ("請稍候... 正在傳送訊息... ")
            sendMessage(chat_id, msgText)
            print ("已經傳送！ :-)")
        elif msgMode == "True":
            print ("請稍候... 正在傳送訊息... ")
            sendMessage_markdown(chat_id, msgText)
            print ("已經傳送！ :-)")
        else:
            exit()
    else:
        exit()
else:
   exit()