random and np.random

random and np.random

def test_random():

    import random
    random.seed(1)

    # [1,5]的一个随机整数, params: low (include), high (include)
    print(random.randint(1, 5))  # 2

    # [0,1)的一个随机数
    print(random.random())  # 0.5692038748222122

    import numpy as np
    np.random.seed(1)

    # [0,1)的一个随机数
    print(np.random.random())  # 0.417022004702574
    print(np.random.random(size=[3]))

    """
    [7.20324493e-01 1.14374817e-04 3.02332573e-01]
    """
    print(np.random.random(size=[2,3]))
    """

    [[0.14675589 0.09233859 0.18626021]
     [0.34556073 0.39676747 0.53881673]]

    """
    # 随机整数
    # np.random.randint区别于random.randint
    # np.random.randint: low(include), high(exclude)
    # random.randint: low(include), high(include)
    print(np.random.randint(low=1, high=5, size=[2,4]))
    """
    [[3 2 3 1]
     [4 1 3 1]]
    """

    return None