Python 如何查找字符串中所有出现的单词的所有索引
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时间：2020-08-19 16:06:37 来源:igfitidea点击:
How to find all the indexes of all the occurrences of a word in a string
提问by Mr.Code
This is my code:
这是我的代码：
sentence = input("Give me a sentence ")
word = input("What word would you like to find ")
sentence_split = sentence.split()
if word in sentence_split:
print("have found",word,)
print("The word comes in the position" )
else:
print("error have not found",word)
wordfound = (sentence_split.index(word)+1)
print(wordfound)
I am able to get the index of the firstoccurrence of a word in string. How can I get allof the occurrences?
我能够获得字符串中单词第一次出现的索引。我怎样才能得到所有的事件？
采纳答案by Idos
Use re.finditer:
使用re.finditer：
import re
sentence = input("Give me a sentence ")
word = input("What word would you like to find ")
for match in re.finditer(word, sentence):
print (match.start(), match.end())
For word = "this"and sentence = "this is a sentence this this"this will yield the output:
对于word = "this"和sentence = "this is a sentence this this"这将产生的输出：
(0, 4)
(19, 23)
(24, 28)
