之前测试不成功，用导入dis的方式。

但如何在命令行里加入 -m dis，就会OK啦。

python -m dis test.py

　　

#coding: utf8x = [1, 2, 3]for i in x:    print i

　　

4           0 LOAD_CONST               0 (1)              3 LOAD_CONST               1 (2)              6 LOAD_CONST               2 (3)              9 BUILD_LIST               3             12 STORE_NAME               0 (x)  6          15 SETUP_LOOP              19 (to 37)             18 LOAD_NAME                0 (x)             21 GET_ITER                    >>   22 FOR_ITER                11 (to 36)             25 STORE_NAME               1 (i)  7          28 LOAD_NAME                1 (i)             31 PRINT_ITEM                       32 PRINT_NEWLINE                    33 JUMP_ABSOLUTE           22        >>   36 POP_BLOCK                   >>   37 LOAD_CONST               3 (None)             40 RETURN_VALUE