Python shell of checking to see which one is faster, addition of strings or interpolation

faster.py

>>> import dis
>>> def addStr(s):
...     return ">" + s + "<"
... 
>>> dis.dis(addStr)
  2           0 LOAD_CONST               1 ('>')
              3 LOAD_FAST                0 (s)
              6 BINARY_ADD          
              7 LOAD_CONST               2 ('<')
             10 BINARY_ADD          
             11 RETURN_VALUE        
>>> def addStr2(s):
...     return ">%s<" % s
... 
>>> dis.dis(addStr2)
  2           0 LOAD_CONST               1 ('>%s<')
              3 LOAD_FAST                0 (s)
              6 BINARY_MODULO       
              7 RETURN_VALUE