>>> def foo(a,b):
...     x = a * b
...     return x
...
>>> def bar(a,b):
...     return a * b
...
>>> def baz(a,b):
...     return a**2 + b**2
...
>>> dis.dis(foo)
  2           0 LOAD_FAST                0 (a)
              3 LOAD_FAST                1 (b)
              6 BINARY_MULTIPLY
              7 STORE_FAST               2 (x)

  3          10 LOAD_FAST                2 (x)
             13 RETURN_VALUE
>>> dis.dis(bar)
  2           0 LOAD_FAST                0 (a)
              3 LOAD_FAST                1 (b)
              6 BINARY_MULTIPLY
              7 RETURN_VALUE
>>> dis.dis(baz)
  2           0 LOAD_FAST                0 (a)
              3 LOAD_CONST               1 (2)
              6 BINARY_POWER
              7 LOAD_FAST                1 (b)
             10 LOAD_CONST               1 (2)
             13 BINARY_POWER
             14 BINARY_ADD
             15 RETURN_VALUE