如何删除在 python3 字符串对象中显示为 `\uxxx` 的特殊字符？答案

【问题标题】：How do i remove the special chars that show as `\uxxx` in python3 string object?如何删除在 python3 字符串对象中显示为 `\uxxx` 的特殊字符？
【发布时间】：2021-05-05 17:43:07
【问题描述】：

python 字符串对象如下：

The site of the old observatory in Bern \u200bis the point of origin of the CH1903 coordinate system at 46°57′08.66″N 7°26′22.50″E\ufeff / \ufeff46.9524056°N 7.4395833°E\ufeff / 46.9524056; 7.4395833.

我想删除这些显示为原始 unicode 的字符 \u200b \ufeff。

【问题讨论】：

标签： python-3.x regex python-unicode

【解决方案1】：

将其编码为ascii 并忽略错误

>>> s = 'The site of the old observatory in Bern \u200bis the point of origin of the CH1903 coordinate system at 46°57′08.66″N 7°26′22.50″E\ufeff / \ufeff46.9524056°N 7.4395833°E\ufeff / 46.9524056; 7.4395833'
>>> s.encode('ascii', 'ignore')
b'The site of the old observatory in Bern is the point of origin of the CH1903 coordinate system at 465708.66N 72622.50E / 46.9524056N 7.4395833E / 46.9524056; 7.4395833'

要将 unicode 字符替换为空格以保持长度不变，可以使用

#length of original string

>>> s = 'The site of the old observatory in Bern \u200bis the point of origin of the CH1903 coordinate system at 46°57′08.66″N 7°26′22.50″E\ufeff / \ufeff46.9524056°N 7.4395833°E\ufeff / 46.9524056; 7.4395833'
>>> len(s)
179

#to maintain the same length

>>> new_s = s.encode('ascii',errors='ignore').decode('utf-8')
>>> final_s = new_s + ' ' * (len(s) - len(new_s))
>>> final_s
'The site of the old observatory in Bern is the point of origin of the CH1903 coordinate system at 465708.66N 72622.50E / 46.9524056N 7.4395833E / 46.9524056; 7.4395833            '
>>> len(final_s)
179

这最后会增加额外的空间来保持长度

【讨论】：

这个很好用，谢谢你的帮助！如果我能得到这些特殊字符在字符串中的位置，我该怎么做？
换句话说，我想用空格替换这些字符以保持字符串长度相同
@merlin 我已经更新了我的答案，以保持你可以在答案中做这样的事情的长度