random模块

import random
随机 : 在某个范围内取到每一个值的概率是相同的

0-1之内的随机小数

import random
print(random.random())

任意范围内的随机小数

import random
print(random.uniform(1,5))

随机整数

import random
print(random.randint(1,2))  #[1,2]包含2在内的范围内随机取整数

import random
print(random.randrange(1,2)) #[1,2)不包含2在内的范围内随机取整数

import random
print(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

import random
lst=[1,2,3,4,"aaa",("a","b")]
ret=random.choice(lst)
print(ret)

随机抽取多个值

import random
lst=[1,2,3,4,"aaa",("a","b")]
ret=random.sample(lst,2)
print(ret)

打乱顺序

import random
lst=[1,2,3,4,"aaa",("a","b")]
random.shuffle(lst)
print(lst)

生成随机验证码

4位数字
import random
s=""
for i in range(4):
    num=random.randint(0,9)
    s=s+str(num)
print(s)

函数:
import random
def func(n=4):
    s=""
    for i in range(n):
        num=random.randint(0,9)
        s=s+str(num)
    return s
print(func())
print(func(6))

6位,数字加字母
import random
s=""
for i in range(6):
    num=random.randint(0,9)
    num1=chr(random.randint(97,122))
    num2=chr(random.randint(65,90))
    a=random.choice([num,num1,num2])
    s+=str(a)
print(s)

函数
import random
def func(n=6):
    s = ""
    for i in range(6):
        num = random.randint(0, 9)
        num1 = chr(random.randint(97, 122))
        num2 = chr(random.randint(65, 90))
        a = random.choice([num, num1, num2])
        s += str(a)
    return s
ret=func()
print(ret)

数字/数字+字母
import random
def func(n=6,alph_flag=True):
    s = ""
    for i in range(6):
        num = random.randint(0, 9)
        if alph_flag:
            num1 = chr(random.randint(97, 122))
            num2 = chr(random.randint(65, 90))
            num = random.choice([num, num1, num2])
            s += str(num)
    return s
ret=func()
print(ret)

import random
def func(n=6,alph_flag=True):
    s = ""
    for i in range(n):
        num = str(random.randint(0, 9))
        if alph_flag:
            num1 = chr(random.randint(97, 122))
            num2 = chr(random.randint(65, 90))
            num = random.choice([num, num1, num2])
        s += num
    return s
ret=func(n=6,alph_flag=False)
print(ret)

import random
def func(n=6,alph_flag=True):
    s = ""
    for i in range(n):
        num = str(random.randint(0, 9))
        if alph_flag:
            num1 = chr(random.randint(97, 122))
            num2 = chr(random.randint(65, 90))
            num = random.choice([num, num1, num2])
        s += num
    return s
ret=func(n=4)
print(ret)