如何使用python在文本中查找字符偏移量

Question

我的目标是在两个对齐的文本文档中识别匹配的字符串，然后在每个文档中找到匹配字符串的起始字符的位置。

doc1=['the boy is sleeping', 'in the class', 'not at home']
doc2=['the girl is reading', 'in the class', 'a serious student']

我的尝试：

# find matching string(s) that exist in both document list:
matchstring=[x for x in doc1 if x in doc2]
Output=matchstring='in the class'

现在的问题是找到doc1和doc2中匹配字符串的字符偏移量（不包括标点符号，包含空格）。

理想的结果：

Position of starting character for matching string in doc1=20
Position of starting character for matching string in doc2=20

有关文字对齐的任何想法吗？感谢。

Answer 1

嘿，伙计，试试这个：

doc1=['the boy is sleeping', 'in the class', 'not at home']
doc2=['the girl is reading', 'in the class', 'a serious student']

temp=''.join(list(set(doc1) & set(doc2)))
resultDoc1 = ''.join(doc1).find(temp)
resultDoc2 = ''.join(doc2).find(temp)

print "Position of starting character for matching string in doc1=%d" % (resultDoc1 + 1)
print "Position of starting character for matching string in doc2=%d" % (resultDoc2 + 1)

它完美地符合您的期望！