The goal is to prefix and suffix all occurrences of a substring (case-insensitive) in a source string. I basically need to figure out how to get from source_str to target_str.
source_str = 'You ARe probably familiaR with wildcard'
target_str = 'You [b]AR[/b]e probably famili[b]aR[/b] with wildc[b]ar[/b]d'
In this example, I am finding all occurrences of 'ar' (case insensitive) and replacing each occurrence by (ie AR, aR and ar respectively), with a prefix ([b])and suffix ([/b]). 的前缀([b])和后缀([/ b])替换每次出现(即AR,aR和ar)。
>>> import re
>>> source_str = 'You ARe probably familiaR with wildcard'
>>> re.sub(r"(ar)", r"[b]\1[/b]", source_str, flags=re.IGNORECASE)
'You [b]AR[/b]e probably famili[b]aR[/b] with wildc[b]ar[/b]d'
Something like
import re
ar_re = re.compile("(ar)", re.I)
print ar_re.sub(r"[b]\1[/b]", "You ARe probably familiaR with wildcard")
perhaps?
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