python - 如何一起或同时使用多个替换，Python

Question

我有一些文本不清楚，并且有很多标签和 ascii，如下所示，

val=

"\nRated\xa0\n           I have been to this place for dinner tonight.
        \nWell I didn't found anything extraordinary there but indeed a meal worth 
        the price. The number of barbeque item and other both were good.\n\nFood: 3.5/5\"

因此，为了清楚地表明我正在使用这个标签

  val.text.replace('\t', '').replace('\n', '').encode('ascii','ignore').
decode("utf-8").replace('Rated','').replace('  ','')

并使用多次替换，我得到了我的o/p -

I have been to this place for dinner tonight. Well I didn't found anything extraordinary there but indeed a meal worth the price. The number of barbeque item and other both were good. Food: 3.5/5

我想知道有什么办法可以让我一次只使用替换来进行类似的替换。就像在这种情况下 -

replace('\t', '').replace('\n', '').replace('  ','')

Answer 1

您可以使用 .translate 删除 \n\t，然后使用替换的空格:

>>> val.translate(None,'\n\t').replace('  ','')
"Rated I have been to this place for dinner tonight.Well I didn't found anything extraordinary there but indeed a meal worth the price. The number of barbeque item and other both were good.Food: 3.5/5"

replace(' ','') 在运行偶数空格时会出现问题(它们将被删除)。您可以考虑使用正则表达式:

>>> re.sub(r'(\b  *\b)',' ',val.translate(None,'\n\t'))
"Rated I have been to this place for dinner tonight.Well I didn't found anything extraordinary there but indeed a meal worth the price. The number of barbeque item and other both were good.Food: 3.5/5"