python中數學笛卡爾積生成

-*-coding:utf-8-*-
import itertools;
# a=[1,2,3];
# b=[4,5,6];
a = '不行;廣大;大幅度;老;充分;大錢;大規模;特大;爸爸;俊雅;可憐;死;殺'.split(';')
b = '常溫;超低溫;高溫;恆溫;候溫;爐溫;氣溫;室溫;水溫;體溫'.split(';')
print "a,b的笛卡爾乘積：",
for x in itertools.product(a,b):
    print x[0], x[1]
print;
print "a自身的笛卡爾乘積：",
for x in itertools.product(a,a):
    print x[0], x[1]