python教程分享Python中random函数的用法整理大全

import random  print(random.random())

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

import random  print(random.randint(1,10))

import random  print(random.randrange(10,22,3))

import random  print(random.choice('学习python'))   # 从字符串中随机取一个字符  print(random.choice(['good', 'hello', 'is', 'hi', 'boy']))   # 从list列表中随机取  print(random.choice(('str', 'tuple', 'list')))   # 从tuple元组中随机取

import random  p=['hehe','xixi','heihei','haha','zhizhi','lala','momo..da']  random.shuffle(p)  print(p)  x = [1, 2, 3, 4, 5]  random.shuffle(x)  print(x)

import random  list1=[1,2,3,4,5,6,7,8,9,10]  slice=random.sample(list1,5)  print(slice)  #[8, 3, 5, 9, 10]  print(list1)  #[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]  x = random.sample(range(0, 10), 5)  print(x, type(x))  #[9, 2, 7, 8, 6]   words = "applekmedoide"  print(random.sample(words, 3))  #['p', 'm', 'a']  print(random.sample(words, 3))  #['d', 'i', 'l']

import random  import numpy as np  x = np.random.rand()  y = np.random.rand(4)  print(x,type(x))  #0.09842641570445387   print(y,type(y))  #[0.27298291 0.12350038 0.63977128 0.90791234] 

import random  import numpy as np  x = np.random.normal(10,0.2,2)  print(x,type(x))  #[9.78391585 9.83981096]   y = np.random.normal(10,0.2)  print(y,type(y))  #9.871187751372984   z = np.random.normal(0,0.1,(2,3))  print(z,type(z))  #[[-0.07114831 -0.10258022 -0.12686863]  # [-0.08988384 -0.00647591  0.06990716]]   z = np.random.normal(0,0.1,[2,2])  print(z,type(z))  #[[ 0.07178268 -0.00226728]  # [ 0.06585013 -0.04385656]] 

import random  import numpy as np  x = np.random.randn()  y = np.random.randn(3)  z = np.random.randn(3, 3)  print(x, type(x))  print(y, type(y))  print(z, type(z))

import random  import numpy as np  x = np.random.standard_normal()  y = np.random.standard_normal(size=(3,3))  print(x, type(x))  print(y, type(y))

import random  import numpy as np  # 从序列[0, 10)之间返回shape=(5,5)的10个随机整数（包含重复值）  x = np.random.randint(0, 10, size=(5, 5))  # 从序列[15, 20)之间返回1个随机整数（size默认为none, 则返回1个随机整数）  y = np.random.randint(15, 20)  print(x, type(x))  print(y, type(y))

import random  random.seed(10)  x = random.random()  print(x,type(x))  random.seed(10)  y = random.random()  print(y,type(y))  z = random.random()  print(z,type(z))

import numpy as np  if __name__ == '__main__':      i = 0      while i <6:          if i <3:              np.random.seed(0)              print(np.random.randn(1, 5))          else:              print(np.random.randn(1, 5))          i += 1      i = 0      while i <2:          print(np.random.randn(1, 5))          i += 1      print(np.random.randn(2, 5))      np.random.seed(0)      print("###################################")      i = 0      while i <8:          print(np.random.randn(1,5))          i += 1