python - Compare lists - delete list where id = id and date > date -

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i have list of lists

[['id', 'fname', 'lname', 'gender', 'startdate'], ['100', 'john', 'jackson', 'm', '08/09/2000'], ['101', 'jenny', 'hobbs', 'f', '01/13/1995'], ['100', 'john', 'jackson', 'm', '08/09/1995']]

i delete duplicate lists id == id , startdate < startdate. leaving lists unique ids have recent startdate.

[['id', 'fname', 'lname', 'gender', 'startdate'], ['100', 'john', 'jackson', 'm', '08/09/2000'], ['101', 'jenny', 'hobbs', 'f', '01/13/1995']]

any great

stuff rows dictionary id after sorting them in date order. thing have remove header before using this.

import time  data = [['100', 'john', 'jackson', 'm', '08/09/2000'], ['101', 'jenny', 'hobbs', 'f', '01/13/1995'], ['100', 'john', 'jackson', 'm', '08/09/1995']]  data = sorted(data, key=lambda x:time.strptime(x[4], '%m/%d/%y'))   # sort data in ascending date order  keys = [x[0] x in data] print keys  d = dict(zip(keys,data))                 # add dictionary ... recent values overwrite older ones  print d.values()

generates output:

[['100', 'john', 'jackson', 'm', '08/09/2000'], ['101', 'jenny', 'hobbs', 'f', '01/13/1995']]

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