标签：rand += 小数 return 指定 strong orm for and
import random
random.random() 产生0-1间的随机小数
>>> res = random.random() >>> print(res) 0.027542593093386247 >>> res = random.random() >>> print(res) 0.7959514300797362
random.randint(start_num,end_num) 产生指定起终止值中的随机整数，闭合区间 [start_num,end_num],可取到起终止值
>>> res = random.randint(1,11) >>> print(res) 9 >>> res = random.randint(1,11) >>> print(res) 3
random.randrange(start_num,end_num) 产生指定起终止值中的随机整数，半开区间[start_num,end_num)
>>> res = random.randrange(1,10) >>> print(res) 5
random.uniform(start_num,end_num) 产生指定起终止值中的随机小数，全开区间（start_num,end_num）
>>> res = random.uniform(1,10) >>> print(res) 9.22286461152352 >>> res = random.uniform(1,10) >>> print(res) 2.7524663134138456 >>> res = random.uniform(1,10) >>> print(res) 4.339277966397103
randon.choice(iter) 在单列集合iter中随机选出一个元素
>>> k = [1,2,"2","name",12] >>> res = random.choice(k) >>> print(res) 2 >>> res = random.choice(k) >>> print(res) 12
random.sample(iter,n) 在单列集合中随机取出n个元素组成列表返回
>>> k = [1,2,"2","name",12] >>> res = random.sample(k,3) >>> print(res) [1, ‘2‘, ‘name‘] >>> res = random.sample(k,3) >>> print(res) [‘2‘, 12, ‘name‘]
random.shuffle(iter) 将列表元素顺序打散，不产生新的列表
>>> print(k) [12, ‘name‘, ‘2‘, 1, 2] >>> res = random.shuffle(k) >>> print(k) [‘2‘, ‘name‘, 2, 12, 1] >>> res = random.shuffle(k) >>> print(k) [12, ‘name‘, 1, 2, ‘2‘] >>>
实例：
# 产生指定位数的验证码 import random def random_code(count): code = ‘‘ for i in range(count): num = random.randint(1, 3) if num == 1: tag = str(random.randint(0, 9)) elif num == 2: tag = chr(random.randint(65, 90)) else: tag = chr(random.randint(97, 122)) code += tag return code print(random_code(6))
标签：rand += 小数 return 指定 strong orm for and
原文地址：https://www.cnblogs.com/dongxixi/p/10690038.html
