从特定点删除文本

Question

我想删除可能与 python 中的特定点不同的文本部分前任：lksalksapointdlksla删除“point”pointdlksla之前的所有内容kljkghglpointsdfasfsd删除“point”pointsdfasfsd之前的所有内容这可能吗？

Answer 1

您可以使用正则表达式：

import re

regex = r"(?P<before>.*)(point)(?P<after>.*)"

test_str = "lksalksapointdlksla"

matches = re.finditer(regex, test_str, re.MULTILINE)

for matchNum, match in enumerate(matches, start=1):

    

    print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group()))

    

    for groupNum in range(0, len(match.groups())):

        groupNum = groupNum + 1

        

        print ("Group {groupNum} found at {start}-{end}: {group}".format(groupNum = groupNum, start = match.start(groupNum), end = match.end(groupNum), group = match.group(groupNum)))

然后，您可以使用before和after组来执行您喜欢的操作。

Answer 2

我将使用.find()字符串切片：

s = 'lksalksapointdlksla'

s = s[s.find('point'):]

print(s)

Answer 3

你能行的：

text = "kljkghglpointsdfasfsd"

text = text.split("point")[1]

print(text)