import telebot, random, time
bot = telebot.TeleBot("token")
@bot.message_handler(commands = ['start'])
def events(message):
msg = ['a', 'b', 'c', 'd', 'e', 'f', 'g']
while True:
bot.send_message(message.chat.id, random.choice(msg))
time.sleep(5.0)
bot.polling()