find and replace with regular expressions
google at mrabarnett.plus.com
Fri Aug 1 01:26:32 CEST 2008
On Jul 31, 9:07 pm, chrispoliq... at gmail.com wrote:
> I am using regular expressions to search a string (always full
> sentences, maybe more than one sentence) for common abbreviations and
> remove the periods. I need to break the string into different
> sentences but split('.') doesn't solve the whole problem because of
> possible periods in the middle of a sentence.
> So I have...
> import re
> middle_abbr = re.compile('[A-Za-z0-9]\.[A-Za-z0-9]\.')
> # this will find abbreviations like e.g. or i.e. in the middle of a
> # then I want to remove the periods.
> I want to keep the ie or eg but just take out the periods. Any
> ideas? Of course newString = middle_abbr.sub('',txt) where txt is the
> string will take out the entire abbreviation with the alphanumeric
> characters included.
It's recommended that you should use a raw strings for regular
Capture the letters using parentheses:
middle_abbr = re.compile(r'([A-Za-z0-9])\.([A-Za-z0-9])\.')
and replace what was found with what was captured:
newString = middle_abbr.sub(r'\1\2', txt)
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