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  1. print ({(1,2,3):6})
  2. print ({(1,2,[3]):6})
Runtime error #stdin #stdout #stderr 0.02s 9936KB
stdin
Standard input is empty
stdout
{(1, 2, 3): 6}
stderr
Traceback (most recent call last):
  File "./prog.py", line 2, in <module>
TypeError: unhashable type: 'list'