1 #-*- coding:utf-8 -*-
 2 
 3 # random各种使用方法
 4 import random
 5  
 6 # 随机生成[0.1)的浮点数
 7 print("random():", random.random())
 8  
 9 # 随机生成1000-9999之间的整数
10 print("randint(1000, 9999):", random.randint(1000, 9999))
11  
12 # 随机生成0-20之间的偶数
13 print("randrange(0, 21, 2):", random.randrange(0, 21, 2))
14  
15 # 随机生成0-20之间的浮点数
16 print("uniform(0, 20):", random.uniform(0, 20))
17  
18 # 从序列中随机选择一个元素
19 list_string = [‘a‘, ‘b‘, ‘c‘, ‘d‘, ‘e‘]
20 print("choice(list):", random.choice(list_string))
21 print("choice(string):", random.choice(‘abcd‘))
22  
23 # 对列表元素随机排序
24 list_number = [1, 2, 3, 4, 5]
25 random.shuffle(list_number)
26 print("shuffle(list):", list_number)
27  
28 # 从指定序列中随机获取指定长度的片断
29 print("sample(sequence):", random.sample(‘abcdefg‘, 2))

random(): 0.39840036736565154
randint(1000, 9999): 5736
randrange(0, 21, 2): 2
uniform(0, 20): 15.785447740011865
choice(list): b
choice(string): b
shuffle(list): [5, 3, 4, 1, 2]
sample(sequence): [‘f‘, ‘b‘]

 1 import random
 2 def v_code():
 3     code=‘‘
 4     for i in range(5):
 5         code+=str(random.choice([random.randrange(10),chr(random.randrange(65,91))]))
 6        
 7     print(code)
 8      
 9      
10 v_code()

04TT3