29 random模块

# random各种使用方法
import random
 
# 随机生成[0.1)的浮点数
print("random():", random.random())
 
# 随机生成1000-9999之间的整数
print("randint(1000, 9999):", random.randint(1000, 9999))
 
# 随机生成0-20之间的偶数
print("randrange(0, 21, 2):", random.randrange(0, 21, 2))
 
# 随机生成0-20之间的浮点数
print("uniform(0, 20):", random.uniform(0, 20))
 
# 从序列中随机选择一个元素
list_string = [‘a‘, ‘b‘, ‘c‘, ‘d‘, ‘e‘]
print("choice(list):", random.choice(list_string))
print("choice(string):", random.choice(‘abcd‘))
 
# 对列表元素随机排序
list_number = [1, 2, 3, 4, 5]
random.shuffle(list_number)
print("shuffle(list):", list_number)
 
# 从指定序列中随机获取指定长度的片断
print("sample(sequence):", random.sample(‘abcdefg‘, 2))

random(): 0.6708362810735843
randint(1000, 9999): 5228
randrange(0, 21, 2): 6
uniform(0, 20): 12.767906137387294
choice(list): a
choice(string): d
shuffle(list): [1, 3, 5, 2, 4]
sample(sequence): [‘f‘, ‘g‘]