多维列表/元祖访问的示例

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1. >>> tuple1 = [(2,3),(4,5)]
   
2. >>> tuple1[0]
   
3. (2, 3)
   
4. >>> tuple1[0][0]
   
5. 2
   
6. >>> tuple1[0][2]
   
7. Traceback (most recent call last):
   
8.   File "<stdin>", line 1, in <module>
   
9. IndexError: tuple index out of range
   
10. >>> tuple1[0][1]
    
11. 3
    
12. >>> tuple1[2][2]
    
13. Traceback (most recent call last):
    
14.   File "<stdin>", line 1, in <module>
    
15. IndexError: list index out of range
    
16. >>> tuple2 = tuple1+[(3)]
    
17. >>> tuple2
    
18. [(2, 3), (4, 5), 3]
    
19. >>> tuple2[2]
    
20. 3
    
21. >>> tuple2[2][0]
    
22. Traceback (most recent call last):
    
23.   File "<stdin>", line 1, in <module>
    
24. TypeError: 'int' object is not subscriptable

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