在一个指定位置的圆内随机取若干个坐标点，num为数量，radius为圆的半径，（centerx, centery）为圆心坐标。
方法一：根据条件判断的随机点产生方法

import random
import matplotlib.pyplot as plt


def getRandomPointInCircle(num, radius, centerx, centery):
    samplePoint = []
    for i in range(num):
        while True:
            x = random.uniform(-radius, radius)
            y = random.uniform(-radius, radius)
            if (x ** 2) + (y ** 2) <= (radius ** 2):
                samplePoint.append((int(x) + centerx, int(y) + centery))
                break

        plt.plot(x + centerx, y + centery, '*', color="blue")

    return samplePoint

if __name__ == "__main__":
    num = 1000
    radius = 100
    centerx,centery = 20, 20
    samp = getRandomPointInCircle(num, radius, centerx, centery)
    print("sample point" , samp)
    plt.legend()
    plt.show()

方法二：极坐标产生随机点

import random
import matplotlib.pyplot as plt

def getRandomPointInCircle(num, radius, centerx, centery):
    samplePoint = []
    for i in range(num):
        theta = random.random() * 2 * np.pi
        r = random.uniform(0, radius ** 2)
        x = math.cos(theta) * (r ** 0.5) + centerx
        y = math.sin(theta) * (r ** 0.5) + centery
        samplePoint.append((int(x), int(y)))
        plt.plot(x, y, '*', color="blue")

    return samplePoint

if __name__ == "__main__":
    num = 1000
    radius = 100
    centerx,centery = 20, 20
    samp = getRandomPointInCircle(num, radius, centerx, centery)
    print("sample point" , samp)
    plt.legend()
    plt.show()

显示效果
显示如下：

       在js中，不同于python可以用random.sample(range(1,10),1)来获取任意指定范围的整数，只能获取[0,1)之间的小数，因此需要我们再另行对它进行处理
       在这里，我们结合Math对象来求取固定范围的随机整数，例如我想获得[m,n]之间的随机整数：

<script type="text/javascript">
	function getrand(m,n){
	var rand=Math.floor(Math.random()*(n-m+1))+m #核心代码
	console.log(rand)
	}
	for(var i=1;i<=100;i++){
		getrand(1,10);#取[1,10]
	}
</script>

部分截图如下：