Python简单实现两个任意字符串乘积的方法示例

#!usr/bin/env python#encoding:utf-8'''''__Author__:沂水寒城功能：两个任意字符串乘积'''def two_strs_mutiply(one_str, two_str):  '''''  '''  if one_str[0]=='-':    flag1=-1    one_str=one_str[1:]  else:    flag1=1  if two_str[0]=='-':    flag2=-1    two_str=two_str[1:]  else:    flag2=1  if one_str=='0' or two_str=='0':    return 0  else:    one=int(one_str)    two=int(two_str)    res=one*two*flag1*flag2    return resif __name__ == '__main__':  one_str_list=['0','120','20','43','89765432138','98594','98765432123']  for i in range(len(one_str_list)-1):    one_str,two_str=one_str_list[i],one_str_list[i+1]    print one_str,two_str,'----->',two_strs_mutiply(one_str,two_str)