Question

I’ve got a List of stats (extracted from a raw text) structured like this :

list_stats = [u'site1.com', u'3,346', u'23', u'0.68%', u'\u20ac0.04', u'\u20ac0.25', u'\u20ac0.85', u'site2.com', u'45,784', u'243', u'0.56%', u'\u20ac0.34', u'\u20ac0.32', u'\u20ac0.43', u'site3.com', u'9,396', u'432', u'4.54%', u'\u20ac890.24', u'\u20ac9.87', u'\u20ac8.93']

I want to have a Dict like this :

sites = {
    u'site1.com' : [u'3,346', u'23', u'0.68%', u'\u20ac0.04', u'\u20ac0.25'],
    u'site2.com' : [u'45,784', u'243', u'0.56%', u'\u20ac0.34', u'\u20ac0.32'],
    u'site3.com' : [u'9,396', u'432', u'4.54%', u'\u20ac890.24', u'\u20ac9.87', u'\u20ac8.93']
}

So far, I’ve coded this and it’s working :

sites = {}
for field in list_stats:
    if 'count' not in locals(): count = 0
    if count == 0:
            sites[field] = []
            current = field
    else:
            sites[current].append(field)
    count = count + 1
    if count == 7:
            count = 0

However, it doesn’t seem to be perfect. I am sure we can come up with something more clean and elegant. Can your recode it better?

Answer 1

If your version of python supports dict comprehensions (2.7+)

{k: list_stats[i*7+1:(i+1)*7] for i, k in enumerate(list_stats[::7])}

Which, in this case, gives

{u'site1.com': [u'3,346',
                u'23',
                u'0.68%',
                u'\u20ac0.04',
                u'\u20ac0.25',
                u'\u20ac0.85'],
 u'site2.com': [u'45,784',
                u'243',
                u'0.56%',
                u'\u20ac0.34',
                u'\u20ac0.32',
                u'\u20ac0.43'],
 u'site3.com': [u'9,396',
                u'432',
                u'4.54%',
                u'\u20ac890.24',
                u'\u20ac9.87',
                u'\u20ac8.93']}