Question

在perl中，我可以执行以下操作，并使用空格填充标点符号：

s/([،;؛¿!"\])}»›”؟%٪°±©®।॥…])/ $1 /g;`

在Python中，我试过了这个：

>>> p = u'،;؛¿!"\])}»›”؟%٪°±©®।॥…'
>>> text = u"this, is a sentence with weird» symbols… appearing everywhere¿"
>>> for i in p:
...     text = text.replace(i, ' '+i+' ')
... 
>>> text
u'this, is a sentence with weird \xbb  symbols \u2026  appearing everywhere \xbf '
>>> print text
this, is a sentence with weird »  symbols …  appearing everywhere ¿

但是有没有办法使用某种占位符符号，例如$1 perl python我可以在$scope.clearHistory = function() { $ionicHistory.nextViewOptions({ disableBack: true, historyRoot: true }); }中使用1个正则表达式执行相同操作吗？

Answer 1

$1的Python版本是\1，但您应该使用正则表达式替换而不是简单的字符串替换：

import re

p = ur'([،;؛¿!"\])}»›”؟%٪°±©®।॥…])'
text = u"this, is a sentence with weird» symbols… appearing everywhere¿"

print re.sub(p, ur' \1 ', text)

输出：

this , is a sentence with weird »  symbols …  appearing everywhere ¿

Answer 2

您可以使用re.sub，\1作为占位符。

>>> p = u'،;؛¿!"\])}»›”؟%٪°±©®।॥…'
>>> text = u"this, is a sentence with weird» symbols… appearing everywhere¿"
>>> text = re.sub(u'([{}])'.format(p), r' \1 ', text)
>>> print text
this, is a sentence with weird »  symbols …  appearing everywhere ¿

Answer 3

使用format功能，并插入unicode字符串：

p = u'،;؛¿!"\])}»›”؟%٪°±©®।॥…'
text = u"this, is a sentence with weird» symbols… appearing everywhere¿"
for i in p:
    text = text.replace(i, u' {} '.format(i))

print(text)

<强>输出

this, is a sentence with weird »  symbols …  appearing everywhere ¿

用空格填充多个字符 - python

3 个答案: