On 11 jul, 21:08, Ladislav Andel <[EMAIL PROTECTED]> wrote: > Hi, > I have a list of dictionaries. > e.g. > [{'index': 0, 'transport': 'udp', 'service_domain': 'dp0.example.com'}, > {'index': 1, 'transport': 'udp', 'service_domain': 'dp1.example.com'}, > {'index': 0, 'transport': 'tcp', 'service_domain': 'dp0.example.com'}, > {'index': 1, 'transport': 'tcp', 'service_domain': 'dp1.example.com'}] > > how could I make a new list of dictionaries which would look like: > [{'transports': ['udp','tcp'], 'service_domain': 'dp0.example.com'}, > {'transports': ['udp','tcp'], 'service_domain': 'dp1.example.com'}] > > Could you help me, please?
doms = {} for entry in oldList: doms.setdefault(entry['service_domain'], []).append(entry['transport']) newList = [{'transports': t, 'service_domain': d} for d,t in doms.iteritems()] -- http://mail.python.org/mailman/listinfo/python-list