On 16/12/2011 21:04, John Gordon wrote:
In<mailman.3737.1324054637.27778.python-l...@python.org> Devin
Jeanpierre<jeanpierr...@gmail.com> writes:
You could use re.finditer to find the longest match, and then replace
it manually by hand (via string slicing).
(a match is the longest if (m.end() - m.start()) is the largest --
so, max(re.finditer(...), key=3Dlambda m: (m.end() =3D m.start()))
I ended up doing something similar:
# find the longest match
longest_match = ''
for word in re.findall('((0000:?)+)', ip6):
if len(word[0])> len(longest_match):
longest_match = word[0]
# if we found a match, replace it with a colon
if longest_match:
ip6 = re.sub(longest_match, ':', ip6, 1)
For a simple replace, using re is probably overkill. The .replace
method is a better solution:
ip6 = longest_match.replace(ip6, ':', 1)
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