Group data in nested dictionary Python -

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i have dictionary this,

data = {'04-01-2012': [{1: 0.93}, {2: 0.9195000000000001}, {3: 0.9090000000000001}, {4: 0.8985000000000002},                        {5: 0.8880000000000002}, {6: 0.8775000000000003}, {7: 0.8670000000000003},                        {8: 0.8565000000000004}, {9: 0.8460000000000004}],         '12-01-2012': [{1: 0.96}],         '07-01-2012': [{1: 0.96}, {2: 0.95}, {3: 0.94}, {4: 0.9299999999999999}, {5: 0.9199999999999999},                        {6: 0.9099999999999999}],         '06-01-2012': [{1: 0.945}, {2: 0.9365}, {3: 0.928}, {4: 0.9195000000000001}, {5: 0.9110000000000001},                        {6: 0.9025000000000002}, {7: 0.8940000000000002}],         '10-01-2012': [{1: 0.93}, {2: 0.9244}, {3: 0.9188}],         '05-01-2012': [{1: 0.935}, {2: 0.926}, {3: 0.917}, {4: 0.908}, {5: 0.899}, {6: 0.89}, {7: 0.881}, {8: 0.872}],         '11-01-2012': [{1: 0.945}, {2: 0.9325}],         '02-01-2012': [{1: 0.94}, {2: 0.9299999999999999}, {3: 0.9199999999999999}, {4: 0.9099999999999999},                        {5: 0.8999999999999999}, {6: 0.8899999999999999}, {7: 0.8799999999999999},                        {8: 0.8699999999999999}, {9: 0.8599999999999999}, {10: 0.8499999999999999},                        {11: 0.8399999999999999}],         '03-01-2012': [{1: 0.955}, {2: 0.9455}, {3: 0.936}, {4: 0.9265000000000001}, {5: 0.9170000000000001},                        {6: 0.9075000000000002}, {7: 0.8980000000000002}, {8: 0.8885000000000003},                        {9: 0.8790000000000003}, {10: 0.8695000000000004}],         '08-01-2012': [{1: 0.94}, {2: 0.9295}, {3: 0.919}, {4: 0.9085000000000001}, {5: 0.8980000000000001}],         '01-01-2012': [{1: 0.95}, {2: 0.94}, {3: 0.9299999999999999}, {4: 0.9199999999999999}, {5: 0.9099999999999999},                        {6: 0.8999999999999999}, {7: 0.8899999999999999}, {8: 0.8799999999999999},                        {9: 0.8699999999999999}, {10: 0.8599999999999999}, {11: 0.8499999999999999},                        {12: 0.8399999999999999}],         '09-01-2012': [{1: 0.92}, {2: 0.91}, {3: 0.9}, {4: 0.89}]}

i need iterate on dictionary values , group 1's, 2's , on.

this code far

from collections import defaultdict  final = defaultdict(list)  k, v in data.items():     new_data = next(iter(v))     m, n in new_data.items():         final[m].append(n)  print(final)  # defaultdict(<class 'list'>, {1: [0.935, 0.92, 0.955, 0.96, 0.94, 0.93, 0.95, 0.96, 0.945, 0.94, 0.945, 0.93]})

it groups 1's only, not 2's , on. wrong doing?

you forgot iterate on many tiny dictionaries:

from collections import defaultdict  final = defaultdict(list)  k, v in data.items():     d in v:                 # <-- missing         m, n in d.items():             final[m].append(n)  print(final)

(you called next(...), yields first item only.)

output:

defaultdict(, {1: [0.96, 0.935, 0.93, 0.945, 0.96, 0.95, 0.93, 0.94, 0.945, 0.955, 0.94, 0.92], 2: [0.926, 0.9244, 0.9365, 0.95, 0.94, 0.9195000000000001, 0.9299999999999999, 0.9325, 0.9455, 0.9295, 0.91], 3: [0.917, 0.9188, 0.928, 0.94, 0.9299999999999999, 0.9090000000000001, 0.9199999999999999, 0.936, 0.919, 0.9], 4: [0.908, 0.9195000000000001, 0.9299999999999999, 0.9199999999999999, 0.8985000000000002, 0.9099999999999999, 0.9265000000000001, 0.9085000000000001, 0.89], 5: [0.899, 0.9110000000000001, 0.9199999999999999, 0.9099999999999999, 0.8880000000000002, 0.8999999999999999, 0.9170000000000001, 0.8980000000000001], 6: [0.89, 0.9025000000000002, 0.9099999999999999, 0.8999999999999999, 0.8775000000000003, 0.8899999999999999, 0.9075000000000002], 7: [0.881, 0.8940000000000002, 0.8899999999999999, 0.8670000000000003, 0.8799999999999999, 0.8980000000000002], 8: [0.872, 0.8799999999999999, 0.8565000000000004, 0.8699999999999999, 0.8885000000000003], 9: [0.8699999999999999, 0.8460000000000004, 0.8599999999999999, 0.8790000000000003], 10: [0.8599999999999999, 0.8499999999999999, 0.8695000000000004], 11: [0.8499999999999999, 0.8399999999999999], 12: [0.8399999999999999]})


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