Regexp Over Multiple Lines
Keith
vetter at lincom-asg.com
Wed Sep 4 11:40:22 EDT 2002
In Python can I have a regular expression that spans multiple lines...
e.g. In Perl I may define a regular expression like:
$depends_def = qr/
[\w_\.]+\s*: # simobject:
\s*
[\w_\.]+ # job name
\(\s*(?:[\d]*)?\s*\) # arg list for job (optional
num)
\s+
depends\s+on # keywords "depends on"
\s+
(?:
[\w_\.]+\s*: # simobject:
\s*
(?:
[\w_\.]+ # job name
\(\s*(?:[\d]*)?\s*\) # arg list for job (optional
num)
(?:
(?:
\s+
and\s*[\w_\.]*\s*: # "and simobject:"
\s*
[\w_]* # job name
\(\s*(?:[\d]*)?\s*\) # arg list for job (optional
num)
)+
)? # match optional "and" 1 or
more times
)
)
/sx;
then later I can use that regular expression in another regular
expression.
It helps to span multiple lines for commenting what the heck the ugly
regular expression is trying to do...
BTW: I am investigating Python and have no knowledge of it. Our Perl
code has just gotten out-of-hand.
Thanks,
Keith
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