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  1. keys = ('python', 'proj')
  2. values = ['python', 'proj', 'proj', 'nonexistent']
  3.  
  4. d = {k: [] for k in keys}
  5. for v in values:
  6.     if v in d:
  7.         d[v].append(v)
  8.  
  9. print(d)
Success #stdin #stdout 0.02s 9324KB
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{'proj': ['proj', 'proj'], 'python': ['python']}
https://ideone.com/xrEUir
language:
Python 3 (python  3.9.5)
created:
6 years ago
visibility:
secret

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