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  1. arr = [1, 2, 3]
  2. arr.append (4)
  3. arr.append (5)
  4. arr.pop ()
  5. arr.append (6)
  6. arr.append (7)
  7. arr.pop ()
  8. print (arr)
  9.  
  10.  
Success #stdin #stdout 0.05s 9612KB
stdin
8
stdout
[1, 2, 3, 4, 6]