python中如何生成随机数

1、在[a, b]之间产生随机整数（randint方法）代码如下：————————————import random;for i in range(2): ret = random.randint(1000, 9999) print("在[a, b]之间产生随机整数：random.randint(1000, 9999)=",ret)————————————

3、在[0.0, 1.0)之间产生随机浮点数（random方法）代码如下：______________________________import random;for i in range(2): ret = random.random() print("在[0.0, 1.0)之间产生随机浮点数：random.random() = ",ret)______________________________

5、在序列l坡纠课柩ist1中随机选择1个（choice方法）代码如下：——————————————import rando罪焐芡拂mlist1 = ("hello", "world", 'we', 'are', "learning", "python", 'very', 'good')for i in range(2): ret = random.choice(list1) print("在序列list1中随机选择1个：random.choice(list1) =",ret) ——————————————

7、随机生成验证艨位雅剖码代码如下：————————————————import randomdef ran颊俄岿髭dom_num(): code = '' for i in range(4): ran1 = random.randint(0,9) ran2 = chr(random.randint(65,90)) add = random.choice([ran1,ran2]) code = ''.join([code,str(add)]) return coderand_n = random_num()print("验证码：",rand_n)—————————————————