not_not and if_else

nn_or_ifelse.py

>>> def not_not(x):
...     return not(not x)
... 
>>> def if_else(x):
...     return True if x else False
... 
>>> import dis
>>> dis.dis(not_not)
  2           0 LOAD_FAST                0 (x)
              3 UNARY_NOT
              4 UNARY_NOT
              5 RETURN_VALUE
>>> dis.dis(if_else)
  2           0 LOAD_FAST                0 (x)
              3 POP_JUMP_IF_FALSE       10
              6 LOAD_CONST               1 (True)
              9 RETURN_VALUE
        >>   10 LOAD_CONST               2 (False)
             13 RETURN_VALUE
>>>