# -*- coding: UTF-8 -*- # 1.Python 算术运算符a = 21b = 10 c = a + bprint "a + b 的值为:", c c = a - bprint "a - b 的值为:", c c = a * bprint "a * b 的值为:", c # Python2.x 里,整数除整数,只能得出整数。如果要得到小数部分,把其中一个数改成浮点数即可c = a / bprint "a / b 的值为:", cd = 10.0c = a / dprint "a / d...