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  1. data = [('a', 1), ('b', 2), ('b', 3), ('c', 4), ('c', 5)]
  2. result = {}
  3. for key, value in data:
  4.     result.setdefault(key, []).append(value)
  5. for key, values in result.items():
  6.     print(key, values)
Success #stdin #stdout 0.04s 9580KB
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Standard input is empty
stdout
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a [1]
b [2, 3]
c [4, 5]
https://ideone.com/1D7gRS
language:
Python 3 (python  3.12)
created:
1 year ago
visibility:
secret

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