def area (self): self.__areaValue = self.__length * self.__breadth print("Area ", self.__areaValue) class circle(shape): def __init__(self, radius): shape.__init__(self) self.__radius = radius def area (self): self.__areaValue = self.__radius * self.__radius * 3.142 ...
cv2.circle(img,center, radius, color,5)#线条 center=(200,200) cv2.circle(img,center, radius, color, -1)#填充 cv2.imshow('img',img) cv2.waitKey() 运行结果: 3、方形 cv2.rectangle()用来画方形,包括长方形和正方形。 第1个参数为图像对象; 第2个参数为方形左上角坐标; 第3个参数为方形右...
For python the code is: import math r = float(input()) print(math.pi*math.pow(r,2)) 15th Jan 2020, 5:31 AM Abdol Hashimi 0 couldnt understan. can you clear ly explan plz 15th Jan 2020, 5:33 AM mirshath 0 mirshath the formula for circle's are is Area = pi*radius*radius...
As an example, say that you have the following Circle class: Python circle.py import math class Circle: def __init__(self, radius): if radius < 0: raise ValueError("positive radius expected") self.radius = radius def area(self): assert self.radius >= 0, "positive radius expected" ...
forptinpts: pygame.draw.circle(screen,(0,0,0),(int(pt[0]),int(pt[1])),size) defdraw_lines(lines,clear=True,size=1): if(clear): clear_screen() forlineinlines: pygame.draw.line(screen,(0,0,0),(int(line[0][0]),int(line[0][1])),(int(line[1][0]),int(line[1][1])...
系列题解:https://leetcode.cn/circle/discuss/qiAgHn/ 124. 二叉树中的最大路径和 class Solution: def __init__(self): self.res = float("-inf") #注意全局变量 def maxPathSum(self, root: TreeNode) -> int: """ :type root: TreeNode :rtype: int """ def height(root): if not root...
img=cv2.circle(img,(180,88),50,(255),-1)# 绘制椭圆,椭圆心,长轴,短轴,角度,起始结束角,填充 img=cv2.ellipse(img,(256,256),(100,50),0,0,360,255,-1)labels,num=measure.label(img,return_num=True)# num=3不包括背景 # cv2.imshow("labels",labels)cv2.imshow("img",img)k=cv2.waitKe...
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Here is the code: ```python import turtle import random # 设置画笔 t = turtle.Turtle() t.speed(0) t.hideturtle() t.penup() t.goto(0, -200) t.pendown() # 定义函数绘制正多边形 def draw_polygon(num_sides, radius): for i in range(num_sides): t.forward(radius) t.right(360 /...
熟悉switch(byte|short|int|String|enum){case xx: yyy break },for循环(特别是两层嵌套)、while(条件){循环体;步长;},以及break和continue的用法和场景; 为什么数组获取长度用length,字符串获取长度用length(); Object类中常用的方法:getClass(),hashCode(),equals(),clone(),toString(),finalize()垃圾回收前...