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  1. x = [[]] * 2
  2. x[0].append('a')
  3. x[1].append('b')
  4. print(x)
  5. print(id(x[0]), id(x[1]))
  6.  
Success #stdin #stdout 0.03s 9984KB
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stdin
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Standard input is empty
stdout
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[['a', 'b'], ['a', 'b']]
3073306700 3073306700
https://ideone.com/Yi6iwa
language:
Python 3 (python  3.12)
created:
9 years ago
visibility:
public

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