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  1. obj1 = {
  2.     'ZZZ': {
  3.         'A': [100, 200, 300],
  4.         'B': [400],
  5.         'C': [500]
  6.     },
  7.     'YYY': {
  8.         'A': [100],
  9.         'B': [200, 300, 400],
  10.         'C': [500]
  11.     },
  12.     'XXX': {
  13.         'A': [100],
  14.         'B': [200, 300],
  15.         'C': [400, 500]
  16.     }
  17. }
  18.  
  19. obj2 = {
  20.     '100': {
  21.         'A': ['ZZZ', 'YYY', 'XXX'],
  22.         'B': [],
  23.         'C': [],
  24.     },
  25.     '200': {
  26.         'A': ['ZZZ'],
  27.         'B': ['YYY', 'XXX'],
  28.         'C': [],
  29.     },
  30.     '300': {
  31.         'A': ['ZZZ'],
  32.         'B': ['YYY', 'XXX'],
  33.         'C': [],
  34.     },
  35.     '400': {
  36.         'A': [],
  37.         'B': ['ZZZ', 'YYY'],
  38.         'C': ['XXX'],
  39.     },
  40.     '500': {
  41.         'A': [],
  42.         'B': [],
  43.         'C': ['ZZZ', 'YYY', 'XXX'],
  44.     },
  45. }
  46.  
  47. result = {}
  48. letters_cache = set()
  49. # iterate over first layer (XXX, YYY, ZZZ)
  50. for group, letters in obj1.iteritems():
  51.     # iterate over second layer (A, B, C)
  52.     for letter, numbers in letters.iteritems():
  53.         # iterate over numbers
  54.         letters_cache.add(letter)
  55.         for num in numbers:
  56.             str_num = str(num)
  57.             # set up number as top level key
  58.             result[str_num] = result.get(str_num, {})
  59.             # set up letter as second level key
  60.             result[str_num][letter] = result[str_num].get(letter, [])
  61.             # set append group name
  62.             result[str_num][letter].append(group)
  63.  
  64. # append missed letter to result
  65. for number, letter_group in result.iteritems():
  66.     for letter in letters_cache:
  67.         if letter not in letter_group:
  68.             letter_group[letter] = []
  69.  
  70. print(result)
Success #stdin #stdout 0.01s 118784KB
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{'100': {'A': ['ZZZ', 'YYY', 'XXX'], 'B': [], 'C': []}, '200': {'A': ['ZZZ'], 'B': ['YYY', 'XXX'], 'C': []}, '300': {'A': ['ZZZ'], 'B': ['YYY', 'XXX'], 'C': []}, '400': {'B': ['ZZZ', 'YYY'], 'C': ['XXX'], 'A': []}, '500': {'C': ['ZZZ', 'YYY', 'XXX'], 'A': [], 'B': []}}
https://ideone.com/jcIwFd
language:
Python (PyPy 2.7.13)
created:
6 years ago
visibility:
public

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