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python - Python 上的不清楚索引错误

转载 作者:行者123 更新时间:2023-11-30 22:52:36 26 4
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def scan_for_match(T1, T2):
i = 0
j = 0
while i <= (len(T1)):
if T1[i] == T2[j]:
keywords = open('keywords.txt', 'w+')
keywords.write(T1.pop(i))
T2.pop(j)
if i > (len(T1)):
i = 0
j += 1
if j > (len(T2)):
print "All words have been scanned through"
print "These are the matches found:\n ", keywords.readlines()
i += 1

我认为这是一段非常简单的代码,但是......

T1 = ["me", "gusta", "espanol"]; T2 = ["si", "no", "espanol"]; scan_for_match(T1, T2)

只会给我:

Traceback (most recent call last):
File "stdin", line 1, in module
File "stdin", line 5, in scan_for_match
IndexError: list index out of range

有问题的行只是无害的 if T1[i] == T2[j]:这对我来说没有意义,因为:

i = 0
j = 0
T1[i] = 'me'
T2[j] = 'si'

所以这应该只返回 False 结果而不是 IndexError,对吗?

最佳答案

while i <= (len(T1)):错了,当i等于长度时,会出现IndexError,改成< 。索引从0开始到(长度 - 1)

我建议不要使用pop()方法,它将从列表中删除元素,扫描匹配不需要删除匹配的元素,对吧? :)

或者,您可以通过以下方式找到匹配项:

>>> t2= ["si", "no", "espanol"]
>>> t1= ["me", "gusta", "espanol"]
>>> set(t2) & set(t1)
{'espanol'}

关于python - Python 上的不清楚索引错误,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/38492045/

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