Python 实现 range()

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Python 实现 range()

题目要求

1. 实现 range() 内置函数
2. 不得使用内置模块

格式

1. def myRange(*args):
   
2.     # write your code here

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例子

1. >>> list(myRange(5))
   
2. [0, 1, 2, 3, 4]
   
3. >>> list(myRange('5'))
   
4. Traceback (most recent call last):
   
5.   File "<pyshell#3>", line 1, in <module>
   
6.     list(myRange('5'))
   
7. TypeError: 'str' object cannot be interpreted as an integer
   
8. >>> list(myRange())
   
9. Traceback (most recent call last):
   
10.   File "<pyshell#4>", line 1, in <module>
    
11.     list(myRange())
    
12. TypeError: range expected 1 argument, got 0
    
13. >>> list(myRange(1, 2, 3, 4))
    
14. Traceback (most recent call last):
    
15.   File "<pyshell#5>", line 1, in <module>
    
16.     list(myRange(1, 2, 3, 4))
    
17. TypeError: range expected at most 3 arguments, got 4
    
18. >>> list(myRange(5, 10))
    
19. [5, 6, 7, 8, 9]
    
20. >>> list(myRange(10, 100, 6))
    
21. [10, 16, 22, 28, 34, 40, 46, 52, 58, 64, 70, 76, 82, 88, 94]
    
22. >>> list(myRange(100, 10, -6))
    
23. [100, 94, 88, 82, 76, 70, 64, 58, 52, 46, 40, 34, 28, 22, 16]
    
24. >>> list(myRange(15, 30, -5))
    
25. []
    
26. >>> list(myRange(30, 15, 5))
    
27. []

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