[Python知识库]用Python画笛卡尔坐标系

大家好，今天给大家一个二维的笛卡尔坐标系

好，那我们废话不多说，直接上程序

import turtle as t

t.screensize(800,600,"black")
t.pensize(1)
t.pencolor("white")
t.speed(1000)

#移动
def yidong(x,y):
    t.penup()
    t.goto( x,y )
    t.pendown()

#箭头
def jiantou(l):
    t.color("white","white")
    t.begin_fill()
    t.lt(150)
    for i in range(3):
        t.fd(l)
        t.lt(120)
    t.end_fill()

#标识
def biaoshi():
    for i in range(-400,401,100):
        yidong(i,10)
        t.goto(i,0)
        yidong(i,-20)
        t.write(i)
    for ii in range(-400,400,10):
        yidong(ii,5)
        t.goto(ii,0)
    for a in range(-300,301,100):
        yidong(10,a)
        t.goto(0,a)
        yidong(-20,a-10)
        t.write(a)
        if a==0:
            continue
        t.write(a)
    for aa in range(-300,301,10):
        yidong(5,aa)
        t.goto(0,aa)


#画
def h(l):
   t.fd(l)




def dk():
    yidong(-400,0)
    h(800)
    jiantou(10)
    yidong(0,-300)
    t.setheading(90)#设置画笔角度，逆时针为正，顺时针为负
    h(600)
    jiantou(10)
    biaoshi()


dk()


t.done()

接下来是运行结果

?