python画圆开头的#写什么?
#后跟的是注释
用#有两种格式:
1、print("xxxxxx") # 这里的注释与代码在同一行
2、
# 此行注释单独一行
print("xxxxxx")
Python 如何调用graphics库画圆弧,半圆等
http://www.crifan.com/try_with_python_gui_lib_graphics/
python turtle画4个同心圆方法
from turtle import *
def test():
reset()
circle(30,-360)
up()
goto(0,-10)
down()
circle(40,-360)
up()
goto(0,-20)
down()
circle(50,-360)
up()
goto(0,-30)
down()
circle(60,-360)
if __name__ == '__main__':
test()
怎样用Python画圆?
用turtle库,里面就有画圆的函数
如何用python画同心圆并内接一个五角星?
import numpy as np
import matplotlib.pyplot as plt
%matplotlib inline
theta = np.linspace(0, 2* np.pi, 100)
r, R = 9, 10 # 和大圆的半
# outter circle
X = R * np.cos(theta)
Y = R * np.sin(theta)
# innner circle
x = r * np.cos(theta)
y = r * np.sin(theta)
# pentagon vertices
p_theta = [np.pi/2 np.pi*4/5 * i for i in range(6)] # 五角星的定.
px = r * np.cos(p_theta)
py = r * np.sin(p_theta)
# plot
plt.plot(X, Y, label='Big Circle', color='blue')
plt.plot(x, y, label='Small Circle', color='green')
plt.plot(px, py, label='Pentagon', color='red')
plt.axis('equal')
plt.legend(loc='upper left')
python 如何绘画一个圆柱体,求详细代码。
def ellipse(a, b):
return [[a*math.cos(i*math.pi/180),b*math.sin(i*math.pi/180)] for i in range(0,360)]
if __name__ == "__main__":
l = ellipse(150,80)
turtle.up()
turtle.setpos(150, 80)
turtle.down()
for (x, y) in l:
turtle.setpos(x, y)
turtle.setpos(x, y 100)
for (x, y) in l:
turtle.setpos(x, y 100)
turtle.up()
turtle.setpos(-150, 90)
turtle.down()
turtle.setpos(x - 300, y 100)
turtle.setpos(x - 300, y)
turtle.done()
python 绘制一个圆,当单击窗口的任意位置时圆移动到单击的位置,如何编写代码?
#-*- coding: UTF-8 -*-
import pygame, sys
from pygame.locals import *
white = 255, 255, 255
blue = 0, 0, 200
pygame.init()
screen = pygame.display.set_mode((600, 800))
myfont = pygame.font.Font(None, 20)
textImage = myfont.render("hello game", True, white)
position = 200, 200
print(position)
while True:
for event in pygame.event.get():
if event.type in (QUIT, KEYDOWN):
sys.exit()
elif event.type == MOUSEBUTTONDOWN:
position = event.pos
screen.fill(blue)
screen.blit(textImage, (100, 100))
#position = 200, 200
radius = 100
width = 10
pygame.draw.circle(screen, white, position, radius, width)
pygame.display.update()
用pygame创建界面并监控鼠标按件,获得按下位置,画圆
代码注进如下图:
在python中如何使用循环结构画四个相切的圆
from turtle import *
r=20
x,y=0,0
for i in range(4):
if i==2:
penup()
goto(x,2*r)
penup()
forward(2*r)
pendown()
circle(r)
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