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Groups > comp.lang.python > #101766
| From | Nathan Hilterbrand <nhilterbrand@gmail.com> |
|---|---|
| Newsgroups | comp.lang.python |
| Subject | Re: Powerful perl paradigm I don't find in python |
| Date | 2016-01-15 11:54 -0500 |
| Message-ID | <mailman.23.1452876885.15297.python-list@python.org> (permalink) |
| References | <n7adse$k6$1@dont-email.me> |
On 01/15/2016 04:24 AM, Charles T. Smith wrote:
> while ($str != $tail) {
> $str ~= s/^(head-pattern)//;
> use ($1);
> }
IDK... maybe the OP is looking for something like this? :
import re
def do_something(matchobj):
print("I found {}".format(matchobj.group(0)))
return ""
tail = "END"
str = "FeeFieFooFumEND"
pattern = r"F.."
while(str and str != tail):
oldstr = str
str = re.sub(pattern, do_something, str, 1)
if str == oldstr:
break
Though I would probably change the perl code, too:
while ($str and $str != $tail) {
$str ~= s/^(head-pattern)//;
if ($1) {
do_something($1);
} else {
last;
}
}
Otherwise there is too much risk of an infinite loop if the string is
(1) empty, or (2) never ends up being equal to "tail"
Nathan
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Powerful perl paradigm I don't find in python "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2016-01-15 09:24 +0000
Re: Powerful perl paradigm I don't find in python Peter Otten <__peter__@web.de> - 2016-01-15 10:43 +0100
Re: Powerful perl paradigm I don't find in python Michael Vilain <vilain@NOspamcop.net> - 2016-01-15 02:20 -0800
Re: Powerful perl paradigm I don't find in python Wolfgang Maier <wolfgang.maier@biologie.uni-freiburg.de> - 2016-01-15 11:42 +0100
Re: Powerful perl paradigm I don't find in python "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2016-01-15 11:04 +0000
Re: Powerful perl paradigm I don't find in python "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2016-01-15 11:06 +0000
Re: Powerful perl paradigm I don't find in python Wolfgang Maier <wolfgang.maier@biologie.uni-freiburg.de> - 2016-01-15 14:20 +0100
Re: Powerful perl paradigm I don't find in python "Charles T. Smith" <cts.private.yahoo@gmail.com> - 2016-01-18 13:05 +0000
Re: Powerful perl paradigm I don't find in python Wolfgang Maier <wolfgang.maier@biologie.uni-freiburg.de> - 2016-01-18 14:33 +0100
Re: Powerful perl paradigm I don't find in python Peter Otten <__peter__@web.de> - 2016-01-15 14:34 +0100
Re: Powerful perl paradigm I don't find in python Ulli Horlacher <framstag@rus.uni-stuttgart.de> - 2016-01-15 13:51 +0000
Re: Powerful perl paradigm I don't find in python me <self@example.org> - 2016-01-15 15:20 +0000
Re: Powerful perl paradigm I don't find in python Nathan Hilterbrand <nhilterbrand@gmail.com> - 2016-01-15 11:54 -0500
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