Looking for a regular expression for this...

[faulkner]

idk, most regexes look surprisingly like undergrowth.

malahal, why don't you parse s into a dict? read each couple of lines
into a key-value pair.


John Machin wrote:
> malahal at us.ibm.com wrote:
> > Hi,
> >     My string is a multi line string that contains "filename
> >     <filename>\n" and "host <host>\n" entries among other things.
> >
> >     For example: s = """ filename X
> >                     host hostname1
> >                     blah...
> >                     host hostname2
> >                     blah...
> >                     filename Y
> >                     host hostname3
> >                     """
> > Given a host name, I would like to get its filename (The closest
> > filename reading backwards from the host line). I could read each line
> > until I hit the host name, but I am looking for an RE that will do job.
>
> Looking for? REs don't lurk in the undergrowth waiting to be found. You
> will need to write one (unless some misguided person spoon-feeds you).
> What have you tried so far?
>
> > The answer should be "Y" for host hostname3 and "X" for either host
> > hostname1 or hostname2.
> > 
> > Thanks in advance.
> > 
> > --Malahal.