从字符串Python正则表达式中删除撇号

Question

I have the following string:

i've been running from what i don't know if she's there or if she's cares it's taken you a long time to see you've got a goldfish memory this song's ed'

How do I use a regex to remove all apostrophe that is between words? I tried using re.sub('(?<=[az])'(?=[az])', '', s) but cannot get the desired result.

Answer 1

You need to escape the single quote in your regex to distinguish it from the pattern which is also in single quotes:

re.sub('(?<=[a-z])\'(?=[a-z])', '', s)

But, another solution would be to just use double quotes for the entire pattern:

re.sub("(?<=[a-z])'(?=[a-z])", "", s)

Answer 2

If it's not set in stone that you have to use regex;

sentence = r"i've been running from what i don't know if she's there or if she's cares it's taken you a long time to see you've got a goldfish memory this song's ed'"

print(sentence.replace("'", ""))

OUTPUT:

>>> ive been running from what i dont know if shes there or if shes cares its taken you a long time to see youve got a goldfish memory this songs ed

Regarding Kevin's comment, using the count of the occurrences less 1;

print(sentence.replace("'", "", sentence.count("'")-1))

OUTPUT:

>>> ive been running from what i dont know if shes there or if shes cares its taken you a long time to see youve got a goldfish memory this songs ed'