Example:

>>> dis(pickle.dumps(T, 3), annotate=1)                                                                                                                                         
    0: \x80 PROTO      3 | Protocol version indicator.                                                                                                                          
    2: ]    EMPTY_LIST   | Push an empty list.                                                                                                                                  
    3: q    BINPUT     0 | Store the stack top into the memo.  The stack is not popped.                                                                                         
    5: h    BINGET     0 | Read an object from the memo and push it on the stack.                                                                                               
    7: \x85 TUPLE1       | One-tuple.                                                                                                                                           
    8: q    BINPUT     1 | Store the stack top into the memo.  The stack is not popped.                                                                                         
   10: a    APPEND       | Append an object to a list.                                                                                                                          
   11: 0    POP          | Discard the top stack item, shrinking the stack by one item.                                                                                         
   12: h    BINGET     1 | Read an object from the memo and push it on the stack.                                                                                               
   14: .    STOP         | Stop the unpickling machine.