使用 targetblank 标记从数据框列中删除 url

Question

我想从数据框中的列中删除 url。我感兴趣的栏目称为评论，评论中的示例条目是：

|comment                                 |
|:--------------------------------------:|
| """Drone Strikes Up 432 Percent Under. |
|Donald Trump"" by Joe Wolverton, II,    |
|J.D.                                    |
|<a                                      |
|href=""https://www.thenewamerican.com/  |
|usne                                    |
|ws/foreign-policy/item/25604-drone-     |
|strikes-up-432-percent-under-donald-    |
|trump""                                 |
|title=""https://www.thenewamerican.com/ |
|usn                                     |
|ews/foreign-policy/item/25604-drone-    |
|strikes-up-432-percent-under-donald-    |
|trump""                                 |
|target=""_blank"">https://www.thenewamer|
|c                                       |
|an.com/usnews/foreign-policy/item/25604-|
|drone-st...</a><br/>""Trump is weighing |
| major escalation in Yemen's devastating| 
|war<br/>The war has already killed at   |
|least 10,000, displaced 3 million, and. | 
|left millions more at risk of famine."" |
|<br/>"                                  |

以上条目显示了我正在尝试解决的问题。我想完全删除：

<a href=""https://www.thenewamerican.com/usnews/foreign-policy/item/25604-drone-strikes-up-432-percent-under-donald-trump"" title=""https://www.thenewamerican.com/usnews/foreign-policy/item/25604-drone-strikes-up-432-percent-under-donald-trump"" target=""_blank"">https://www.thenewamerican.com/usnews/foreign-policy/item/25604-drone-st...</a>

我试过：

df['comment'] = df['comment'].replace(r'https\S+', ' ', regex=True).replace(r'www\S+', ' ', regex=True).replace(r'http\S+', ' ', regex=True)

不过我喜欢这个

href title targetblank com

Answer 1

您可以尝试使用正则表达式执行替换，使用 re.sub。

例如：

import re

s = """Drone Strikes Up 432 Percent Under. Donald Trump"" by Joe Wolverton, II, J.D. <a href=""https://www.thenewamerican.com/usnews/foreign-policy/item/25604-drone-strikes-up-432-percent-under-donald-trump"" title=""https://www.thenewamerican.com/usnews/foreign-policy/item/25604-drone-strikes-up-432-percent-under-donald-trump"" target=""_blank"">https://www.thenewamerc an.com/usnews/foreign-policy/item/25604-drone-st...</a><br/>""Trump is weighing  major escalation in Yemen's devastating war<br/>The war has already killed at   least 10,000, displaced 3 million, and.  left millions more at risk of famine."" <br/>"""

print(re.sub('<a\s[^>]*.*?<\/a>', '', s))

对于您的情况，您可以使用 .applay 来实现您的目标：

import re
import pandas as pd


df = pd.DataFrame({'comment': ["Drone Strikes Up 432 Percent Under. Donald Trump"" by Joe Wolverton, II, J.D. <a href=""https://www.thenewamerican.com/usnews/foreign-policy/item/25604-drone-strikes-up-432-percent-under-donald-trump"" title=""https://www.thenewamerican.com/usnews/foreign-policy/item/25604-drone-strikes-up-432-percent-under-donald-trump"" target=""_blank"">https://www.thenewamerc an.com/usnews/foreign-policy/item/25604-drone-st...</a><br/>""Trump is weighing  major escalation in Yemen's devastating war<br/>The war has already killed at   least 10,000, displaced 3 million, and.  left millions more at risk of famine."" <br/>"""]})

df['comment'] = df['comment'].apply(lambda x: re.sub('<a\s[^>]*.*?<\/a>', '', x))

print(df)

Answer 2

尝试：

df['comment'] = df['comment'].str.replace('<a\s[^>]*.*?<\/a>', '')

输出：

>>> df.loc[0, 'comment']

'Drone Strikes Up 432 Percent Under. Donald Trump"" by Joe Wolverton, II, J.D. <br/>""Trump is weighing  major escalation in Yemen\'s devastating war<br/>The war has already killed at   least 10,000, displaced 3 million, and.  left millions more at risk of famine."" <br/>'

使用 targetblank 标记从数据框列中删除 url

Removing urls from a data-frame column with targetblank tag

javascript

python

url

dataframe

pandas