On 01/10/2014 10:58, [email protected] wrote:
I have a dictionary as follows:-{ u'StarterAmps1': Row(id=4, ain=u'AIN3', name=u'StarterAmps1', conv=6834.374834509803, Description=u'Starter Amps'), u'LeisureVolts': Row(id=1, ain=u'AIN0', name=u'LeisureVolts', conv=29.01374215995874, Description=u'Leisure Volts'), u'RudderPos': Row(id=6, ain=u'AIN5', name=u'RudderPos', conv=0.028125, Description=u'Rudder Position'), u'xx': Row(id=7, ain=u'AIN6', name=u'xx', conv=0.028125, Description=u''), u'LeisureAmps1': Row(id=3, ain=u'AIN2', name=u'LeisureAmps1', conv=32.727273081945, Description=u'Leisure Amps'), u'StarterVolts': Row(id=2, ain=u'AIN1', name=u'StarterVolts', conv=28.94469628911757, Description=u'Starter Volts') } I want to output a menu to a user comprising some parts of the dictionary (ain and Description) sorted by ain. Is there some incantation of sorted() that will do what I want? I can't quite fathom out the 'key=' parameter needed to sort it by the tuple item. Maybe I need a cmp= ? E.g. I want to do something like:- for meas in sorted(adc.cfg, key=???): print(adc.cfg[meas].ain, adc.cfg[meas].Description) What's needed in the ???
IIRC one method involves using itemgetter from https://docs.python.org/3/library/operator.html#module-operator
-- My fellow Pythonistas, ask not what our language can do for you, ask what you can do for our language. Mark Lawrence -- https://mail.python.org/mailman/listinfo/python-list
