如何从python字符串中删除大量空格？

Question

我知道有一些与我类似的问题，但我找不到解决我的问题的方法。我有一个字符串，它是：

"subject: Exercise Feedback Form

persona_id: bresse

Q1: Yes

Q1 comments: Yes everything was found A1

Q2: No

Q2 comments: No forgot to email me A2

Q3: Yes

Q3 comments: All was good A3

Q4: No

Q4 comments: It was terrible A4

Q5_comments: Get Alex to make it better

如您所见，中间有大量空白。我将如何使用 python 删除它？

Answer 1

您可以使用正则表达式并将表达式配置为用一个空格替换 n 个或多个空格/换行符/制表符/空格：import res = "hello     \n   world"print(re.sub("\s{4,}"," ",s))印刷：hello world\s如果至少有 4 个空格/换行符/制表符/任何东西（在正则表达式中），它将在这里删除所有空格，并且只替换一个空格（为了避免分隔的单词在替换后被整理，您可以替换那个由换行符或无字符）。

Answer 2

text你的字符串在哪里：import retext = re.sub(r"\s{2,}", "", text)

Answer 3

试试这个：s = """subject: Exercise Feedback Formpersona_id: bresseQ1: YesQ1 comments: Yes everything was found A1Q2: NoQ2 comments: No forgot to email me A2Q3: YesQ3 comments: All was good A3Q4: NoQ4 comments: It was terrible A4Q5_comments: Get Alex to make it better

Answer 4

您可以使用re.sub：import reprint(re.sub('(?<=\n)\s+\n', '', content))输出："subject: Exercise Feedback Formpersona_id: bresseQ1: YesQ1 comments: Yes everything was found A1Q2: NoQ2 comments: No forgot to email me A2Q3: YesQ3 comments: All was good A3Q4: NoQ4 comments: It was terrible A4Q5_comments: Get Alex to make it bettersubject: Issue With Apppersona_id: bressecomments: Facebook does not work comments feedback"