Python生成随机数，python随机数,import rando

Python生成随机数，python随机数,import rando

import randomdef 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 = 0while 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')#该片段来自于http://byrx.net