[已解决]string index out of range

lilu871006

1. def function1():
   
2.     str1 = '''ACFlCTLIQlAIVMTqHFkswqbDDHtpgcWaXSSglUYKE
   
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105. qKWGc'''
     
106.     length = len(str1)
     
107.     list1 = []
     
108.     for i in range(length):
     
109.         if str1[i].islower() and str1[i-1].isupper() and str1[i-2].isupper and str1[i-3].isupper and str1[i+1].isupper and str1[i+2].isupper() and str1[i+3].isupper():
     
110.             if str1[i] not in list1:
     
111.                 list1.extend(str1[i])
     
112.     print(list1)
     
113.         
     
114. function1()

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麻烦问问，为什么会出现string index out of range？
出现string index out of range的原因常有哪些，感觉这段时间经常碰到，在函数里面对于print（）语句往哪摆，感觉有点傻傻分不清楚。
我是小白，麻烦各位尽量能用质朴一点的语言描述，感激不尽！！！

最佳答案

月排行榜 / 总排行榜

_2_

2020-4-26 12:31:28

字符串越界
类似的还有 list index out of range 等

1. if str1[i].islower() and str1[i-1].isupper() and str1[i-2].isupper and str1[i-3].isupper and str1[i+1].isupper and str1[i+2].isupper() and str1[i+3].isupper():
   
2. #                                                                                                                                             ^这里越界

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跳转到最佳答案楼层

_2_

字符串越界
类似的还有 list index out of range 等

1. if str1[i].islower() and str1[i-1].isupper() and str1[i-2].isupper and str1[i-3].isupper and str1[i+1].isupper and str1[i+2].isupper() and str1[i+3].isupper():
   
2. #                                                                                                                                             ^这里越界

复制代码

zltzlt

把第 108 行改成这样试试：

1. for i in range(3, length - 3):

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