compare two methods of initializing zeroed list, Python 3.3

gistfile1.txt

In [1]: import dis

In [2]: def f(): return ["foo" for i in range(10)]

In [3]: dis.dis(f)
  1           0 LOAD_CONST               1 (<code object <listcomp> at 0x1062e14b0, file "<ipython-input-16-3cb1faa7b4d7>", line 1>) 
              3 LOAD_CONST               2 ('f.<locals>.<listcomp>') 
              6 MAKE_FUNCTION            0 
              9 LOAD_GLOBAL              0 (range) 
             12 LOAD_CONST               3 (10) 
             15 CALL_FUNCTION            1 (1 positional, 0 keyword pair) 
             18 GET_ITER
             19 CALL_FUNCTION            1 (1 positional, 0 keyword pair) 
             22 RETURN_VALUE

In [4]: def f(): return ["foo"] * 10

In [5]: dis.dis(f)
  1           0 LOAD_CONST               1 ('foo') 
              3 BUILD_LIST               1 
              6 LOAD_CONST               2 (10) 
              9 BINARY_MULTIPLY
             10 RETURN_VALUE