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  1. import traceback
  2.  
  3. a = (1,2,[3,4])
  4. try:
  5. a[2] += [4,5]
  6. except:
  7. traceback.print_exc()
  8. print(a)
Success #stdin #stdout #stderr 0.02s 63468KB
stdin
Standard input is empty
stdout
(1, 2, [3, 4, 4, 5])
stderr
Traceback (most recent call last):
  File "prog.py", line 5, in <module>
    a[2] += [4,5]
TypeError: 'tuple' object does not support item assignment