win7安装python生成随机数代码分享

代码如下:

import random

def genrand(small, big) : return small + (big-small) * random.random()

def display(small, big) : return r’请输入上下限(默认%.2f~%.2f):’ % (small, big)

big = 100small = 0

while true : try : s = input(display(small, big)).strip() if s.lower() == ‘exit’ : break a = s.split() if a != [] : big = float(a[1]) small = float(a[0]) rand = genrand(small, big) print(‘(%.2f~%.2f): %.3f\n’ % (small, big, rand)) except : print(‘–error–\n’)