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Asked: 2026-06-12T23:52:34+00:00

from itertools import groupby #input l = [[‘Cautus B.V.’, ‘plein 92’, ‘1129008’, ’10’, ‘AVB’,

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from itertools import groupby
#input
l = [['Cautus  B.V.', 'plein 92', '1129008', '10', 'AVB', 'Geachte mevrouw Daa', 'Mevrouw C.P. Daa'] ,
['Cautus  B.V.', 'Wei 9-11', '1019123', '10', 'AVB', 'Geachte mevrouw Daa', 'Mevrouw C.P. Daa'] ,
['Cautus  B.V.', 'plein 92', '1129008', '10', 'BEDR', 'Geachte mevrouw Daa', 'Mevrouw C.P. Daa'] ,
['Cautus  B.V.', 'Wei 9-11', '1019123', '10', 'BEDR', 'Geachte mevrouw Daa', 'Mevrouw C.P. Daa'] ,
['De company', 'tiellaan 42', 'KD0022232', '13', 'AVB', 'Geachte heer Tigch', 'De heer I. Tigch'] ,
['De company', 'tiellaan 42', 'KD0022232', '13', 'DAS', 'Geachte heer Tigch', 'De heer I. Tigch'] ,
['Slever ', 'klopt 42', 'KD2220115', '17', 'AVB', 'Geachte heer Slever', 'De heer T. Slever']]
#script
l_clean = sorted(zip(zip(*l)[1], zip(*l)[4],))

l_final = [(k, zip(*v)[1]) for k,v in groupby(l_clean, key = lambda x:x[0])]

for k,v in l_final:

     print k,list(v)

#My output is:

Wei 9-11 ['AVB', 'BEDR']

klopt 42 ['AVB']

plein 92 ['AVB', 'BEDR']

tiellaan 42 ['AVB', 'DAS']

Problem

My problem is that i can’t seem to add the other data to the output the data i also want to have in the output is:

['Cautus  B.V.','1019123', '10', 'Geachte mevrouw Daa', 'Mevrouw C.P. Daa'](not only for this entry but for all entry's)

I tryed everything changing/adding the key etc but it doesn’t seem to work.
I know my english is vague so if i need to clarify some words or anything just say so.
Already thx in advance.

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1 Answer

  1. Editorial Team

    I’m having a difficult time understanding what you’re trying to do, but perhaps this will help:

    from itertools import groupby
import operator
#input
l = [['Cautus  B.V.', 'plein 92', '1129008', '10', 'AVB', 'Geachte mevrouw Daa', 'Mevrouw C.P. Daa'] ,
['Cautus  B.V.', 'Wei 9-11', '1019123', '10', 'AVB', 'Geachte mevrouw Daa', 'Mevrouw C.P. Daa'] ,
['Cautus  B.V.', 'plein 92', '1129008', '10', 'BEDR', 'Geachte mevrouw Daa', 'Mevrouw C.P. Daa'] ,
['Cautus  B.V.', 'Wei 9-11', '1019123', '10', 'BEDR', 'Geachte mevrouw Daa', 'Mevrouw C.P. Daa'] ,
['De company', 'tiellaan 42', 'KD0022232', '13', 'AVB', 'Geachte heer Tigch', 'De heer I. Tigch'] ,
['De company', 'tiellaan 42', 'KD0022232', '13', 'DAS', 'Geachte heer Tigch', 'De heer I. Tigch'] ,
['Slever ', 'klopt 42', 'KD2220115', '17', 'AVB', 'Geachte heer Slever', 'De heer T. Slever']]
#script
sortkey = operator.itemgetter(1,4)
l_clean = sorted(l,key=sortkey)

l_final = [(k, list(v)) for k,v in groupby(l_clean, key = operator.itemgetter(1))]

for k,v in l_final:
   info_rest = v[0][:4]+v[0][5:]
   info_combine = map(operator.itemgetter(4),v) 
   print k,info_combine,info_rest

    Basically, I sorted all of the data based on a specific key. This way you don’t lose any data during the sort stage. I then changed the key in groupby to be consistent with the new data layout and printed the results.

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