How to create a dict equivalent in Python from Perl hash?

Question

I\'m new to python, and can\'t get my head around dict hashes.

Here\'s my perl code:

my %sites;

foreach (@indexes) {
       push @{$sites{$1}}, $_ if (/         


        

Answer 1

This is a pretty direct translation:

import re

re_domain = re.compile(".*\.(.*)")
sites = {}

for index in indexes:
    match = re_domain.search(index)
    if match:
        sites.setdefault(match.group(1), []).append(index)

for site_key in sites.keys():
    devices = sites[site_key]

A more Pythonic way would be to do it like this:

import collections
import os.path

sites = collections.defaultdict(list)

for index in indexes:
    root, ext = os.path.splitext(index)
    sites[ext].append(index)

for site_key, devices in sites.iteritems():
    ...