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  1. from collections import Counter
  2.  
  3. owner_id = ['owner1', 'owner2', 'owner3', 'owner2']
  4. media_id = ['media1', 'media2', 'media3', 'media4']
  5.  
  6. owner_stats = Counter(owner_id)
  7.  
  8. out = {}
  9. for index, owner in enumerate(owner_id):
  10.     if owner_stats[owner] == 1:
  11.         out[owner] = media_id[index]
  12.  
  13. print (out)
  14.  
Success #stdin #stdout 0.02s 9268KB
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stdin
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Standard input is empty
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{'owner1': 'media1', 'owner3': 'media3'}
https://ideone.com/sFIHqQ
language:
Python 3 nbc (python 3.7.3)
created:
3 years ago
visibility:
public

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