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MyASPN >> Mail Archive >> python-list
python-list
Re: scanf style parsing
by Quinn Dunkan other posts by this author
Oct 4 2001 3:48AM messages near this date
advanced regex, was: Re: scanf style parsing | Re: scanf style parsing
On Wed, 26 Sep 2001 22:21:05 GMT, Andrei Kulakov <sill@[...].net>  wrote:
> On Wed, 26 Sep 2001 05:42:45 GMT, Bruce Dawson <comments@[...].com> wrote:
> > I love programming in Python, but there are some things I have not found
> > the easy way to do. I understand that Python is supposed to be good at
> > text parsing, but I am having trouble with this simple task. Given this
> > text (the output from VisualC++) I want to find out how many errors and
> > warnings there were:
> > 
> > smtpmail.exe - 0 error(s), 0 warning(s)
> 
> Seeing that there should only be 2 words here that are numbers, you can do
> this:
> 
> my_str # that's where the result is
> words = my_str.split()
> lst = []
> for word in words:
>     try:
>         result = int(word)
>         lst.append(result)
>     except:
>         pass
> 
> errors = lst[0]
> warnings = lst[1]

More compactly:

errors, warnings = [ int(w) for w in line.split() if w.isdigit() ]
-- 
http://mail.python.org/mailman/listinfo/python-list
Thread:
Bruce Dawson
Skip Montanaro
George Demmy
Hans-Peter Jansen
Quinn Dunkan
Tim Hammerquist
Ralph Corderoy
Toby Dickenson
Duncan Booth
Aahz Maruch
Aahz Maruch
Aahz Maruch
Stefan Schwarzer
Grant Edwards
Fredrik Lundh

Malcolm Tredinnick
Ralph Corderoy
Tim Hammerquist
Stefan Schwarzer
Greg Ewing
Skip Montanaro
Boyd Roberts
Steve Clift
Bruce Dawson
Tim Hammerquist
Tim Hammerquist
Tim Hammerquist
Skip Montanaro
Andrew Dalke
Fredrik Lundh
Oleg Broytmann
Andrei Kulakov
Duncan Booth
Chris Barker
Tim Hammerquist
Skip Montanaro
Jon Nicoll
Oleg Broytmann
Bruce Dawson
Skip Montanaro
Andrei Kulakov
Richard Jones
Skip Montanaro
Andrew Dalke

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