013元组：戴上了枷锁的列表

人若有情死得早

由于和列表是近亲关系，所以元组和列表在实际使用上是非常相似的。
区别元组和列表
1）创建和访问一个元组

1. >>> tuple1 = (1,2,3,4,5,6,7,8)
   
2. >>> tuple1
   
3. (1, 2, 3, 4, 5, 6, 7, 8)
   
4. >>> tuple1[1]
   
5. 2
   
6. >>> tuple1[5:]
   
7. (6, 7, 8)
   
8. >>> tuple1[:5]
   
9. (1, 2, 3, 4, 5)
   
10. >>> tuple2 = tuple1[:]
    
11. >>> tuple2
    
12. (1, 2, 3, 4, 5, 6, 7, 8)
    
13. >>> tuple2 = tuple1[:]
    
14. >>> tuple2
    
15. (1, 2, 3, 4, 5, 6, 7, 8)
    
16. >>> tuple1[1] = 3
    
17. Traceback (most recent call last):
    
18.   File "<pyshell#9>", line 1, in <module>
    
19.     tuple1[1] = 3
    
20. TypeError: 'tuple' object does not support item assignment
    
21. >>> temp = (1)
    
22. >>> temp
    
23. 1

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2）更新和删除一个元组

1. >>> type(temp)
   
2. <class 'int'>
   
3. >>> temp2 = 2,3,4
   
4. >>> type(temp2)
   
5. <class 'tuple'>
   
6. >>> temp = []
   
7. >>> type(temp)
   
8. <class 'list'>
   
9. >>> temp = ()
   
10. >>> type(temp)
    
11. <class 'tuple'>
    
12. >>> temp = (1,)
    
13. >>> type(temp)
    
14. <class 'tuple'>
    
15. >>> temp = 1,
    
16. >>> type(temp)
    
17. <class 'tuple'>
    
18. >>> 8 * (8)
    
19. 64
    
20. >>> 8 * (8,)
    
21. (8, 8, 8, 8, 8, 8, 8, 8)
    
22. >>> temp = ('小甲鱼','黑夜','迷途','小布丁')
    
23. >>> temp = temp[:2] + ('怡静',) + temp[2:]
    
24. >>> temp
    
25. ('小甲鱼', '黑夜', '怡静', '迷途', '小布丁')
    
26. >>> del temp
    
27. >>> temp
    
28. Traceback (most recent call last):
    
29.   File "<pyshell#29>", line 1, in <module>
    
30.     temp
    
31. NameError: name 'temp' is not defined

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3）元组相关的操作符