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All i want to extract is "Version: 150" and "Thread: www.google.com". I've been trying to find a way to do it with re.findall (and would prefer to do it that way if possible) but havent been able to get it working.
Edit: I should mention that 150 and 20 are variable in this case in case that wasn't obvious...
Any help is appreciated.
Last edited by mwwynne; 12-10-2012 at 11:55 PM.
Reason: Correct input line
I'm sure you can find lots of regex-related tutorials online. Creating of a particular regular expression often requires some trial and error, so I use little sed one-liners, for example
$ echo 'field1: ignore, Version: 150, field1: ignore, field 2, ignore, Thread: www.google.com' | sed -r 's/(Version|Thread): [^ ,]*/[&]/g'
field1: ignore, [Version: 150], field1: ignore, field 2, ignore, [Thread: www.google.com]
or use ipython, if I need a python solution. This way I can try different ideas and approaches very quickly. Also it is very instructive to read manual and info pages which are probably already installed on your system: man sed, info sed, man awk, info gawk, man grep, man perlre, man perlretut (from perl-doc package on Ubuntu) etc. Of course they are all about different languages, but regular expressions are almost the same.