如何從python字符串中刪除大量空白？

Question

我知道有一些類似的問題要解決，但我找不到解決方案。 我有一個字符串是：

"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






























subject: Issue With App
persona_id: bresse
comments: Facebook does not work comments feedback"

如您所見，中間有大量空白。 我如何使用python刪除它？

Answer 1

text在哪里是您的字符串：

import re
text = re.sub(r"\s{2,}", "", text)

Answer 2

您可以使用正則表達式並將其配置為用單個空格替換n個或多個空格/換行符/制表符/空白：

import re

s = "hello     \n   world"
print(re.sub("\s{4,}"," ",s))

印刷品：

hello world

如果至少有四個空格，這里將刪除所有空格/換行符/制表符/（在正則表達式中為\\s ），並且只會替換一個空格（為避免替換后的單詞被整理后再整理，您可以用換行符或無字符替換）。

Answer 3

嘗試這個：

s = """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






























subject: Issue With App
persona_id: bresse
comments: Facebook does not work comments feedback"""
s = s.replace("\n\n","")
print(s)

Answer 4

您可以使用re.sub ：

import re
print(re.sub('(?<=\n)\s+\n', '', content))

輸出：

"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
subject: Issue With App
persona_id: bresse
comments: Facebook does not work comments feedback"

Answer 5

不使用re：

刪除無用的空間：

' '.join(text.split())

刪除無用的\\ n：

'\n'.join(filter(None, text.split('\n')))