text: # -*- coding:UTF-8 -*-
  #! /usr/bin/python3
  print('\n\b=====元组=====\n元组的两种定义方式：')
  tup2 = (1,2,3,'1','2','3','a','s','d')
  print(tup2)
  tup1 =  1,2,3,4 # 不适用括号也可
  print(tup1)
  
  tup3 = () # 空元组
  list1 = ["234","as","af",1]
  print('数据类型转换：')
  print(list1,'->',end = '')
  tup3 = tuple(list1) # 数据类型转换
  
  print(tup3)
  print(type(tup3))