random模块

随机 : 在某个范围内取到每一个值的概率是相同的


随机小数

random.random())  # 0-1之内的随机小数
random.uniform(1,5)) # 任意范围之内的随机小数

　随机整数

random.randint(1,2))# [1,2] 包含2在内的范围内随机取整数
random.randrange(1,2) # [1,2)不包含2在内的范围内随机取整数
random.randrange(1,10,2) # [1,10)不包含10在内的范围内随机取奇数

　随机抽取一个值或多个值

 随机抽取
 随机抽取一个值
 lst = [1,2,3,'aaa',('wahaha','qqxing')]
 ret = random.choice(l)
 print(ret)
 随机抽取多个值   #两个值或多个值不重复
 ret = random.sample(lst,2)
 print(ret)

　打乱顺序

打乱顺序  在原列表的基础上做乱序
lst = [1,2,3,'aaa',('wahaha','qqxing')]
random.shuffle(lst)
print(lst)

抽奖 \ 彩票 \发红包 \验证码 \洗牌

　生成四位数随机验证码生成随机验证码0-9

基础版本
code = ''
for i in range(4):
    num = random.randint(0,9)
    code += str(num)
print(code)


函数版本
def rand_code(n=4):
    code = ''
    for i in range(n):
        num = random.randint(0,9)
        code += str(num)
    return code

print(rand_code())
print(rand_code(6))

6位数字加字母验证码

6位 数字+字母
基础版
code = ''
for i in range(6):
    rand_num = str(random.randint(0,9))
    rand_alph = chr(random.randint(97,122))
    rand_alph_upper = chr(random.randint(65,90))
    atom_code = random.choice([rand_num,rand_alph,rand_alph_upper])
    code += atom_code
print(code)

函数版
def rand_code(n=6):
    code = ''
    for i in range(n):
        rand_num = str(random.randint(0,9))
        rand_alph = chr(random.randint(97,122))
        rand_alph_upper = chr(random.randint(65,90))
        atom_code = random.choice([rand_num,rand_alph,rand_alph_upper])
        code += atom_code
    return code

ret = rand_code()
print(ret)

数字/数字+字母
def rand_code(n=6 , alph_flag = True):
    code = ''
    for i in range(n):
        rand_num = str(random.randint(0,9))
        if alph_flag:
            rand_alph = chr(random.randint(97,122))
            rand_alph_upper = chr(random.randint(65,90))
            rand_num = random.choice([rand_num,rand_alph,rand_alph_upper])
        code += rand_num
    return code

ret = rand_code(n = 4)
print(ret)

　　实现抢红包

import random
def red(money,num):
    r = random.sample(range(0,money*100),num-1)
    r.extend([0,money*100])
    r.sort()
    return [(r[i+1]-r[i])/100 for i in range(num)]
print(red(200,10))
print(sum(red(200,10)))
#任意两个数之间的差值,等于这两个数之间任何两个数之间差值的总和,前提是这个序列是有序的



另外一种常规方法
import random
lst=[]
def redpacket(cash,person):
    if cash>0 and person !=1:
        n = round(random.uniform(0.01,cash-(0.01*person)),2)
        lst.append(n)
        person -= 1
        cash -= n
        redpacket(cash,person)
        return lst
    else:
        lst.append(round(cash,2))
        return lst
print(redpacket(200,10))
print(sum(lst))