save project

hello.py

+#导入turtlt库
+import turtle as x
+
+#创建海龟画图窗口
+x.TurtleScreen._RUNNING = True
+#设置窗口大小
+x.setup(width=960,height=720)
+#设置窗口颜色
+x.bgcolor("white")
+#创建海龟
+turtle_1=x.Turtle()
+turtle_2=x.Turtle()
+turtle_1.shape("turtle")
+turtle_2.shape("turtle")
+turtle_1.goto (100,100)
+#改变画笔图标大小
+turtle_1.shapesize(2)
+turtle_2.shapesize(2)
+#改变颜色
+turtle_1.color('gray')
+turtle_2.color('pink')
+#乌龟前进
+#限制活动范围
+def front():
+    turtle_1.forward(10)
+    if turtle_1.xcor()>200:
+        turtle_1.goto(200,turtle_1.ycor())
+    if turtle_1.xcor()<-200:
+        turtle_1.goto (-200,turtle_1.ycor())
+    if turtle_1.ycor()>200:
+        turtle_1.goto(turtle_1.xcor(),200)
+     if turtle_1.ycor()<-200:
+        turtle_1.goto(turtle_1.xcor(),-200)
+
+
+
+def back():
+    turtle_1.backward(10)
+def left():
+    turtle_1.left(45)
+def right():
+    turtle_1.right(45)
+
+
+
+
+#按下w键前进
+x.onkeypress(front,'w')
+x.onkeypress(back,'s')
+x.onkeypress(left,'a')
+x.onkeypress(right,'d')
+
+#窗口监听
+x.listen()
+
+#抬起画笔
+turtle_1.penup()
+#向着乌龟方向
+while True:
+    turtle_2.setheading(turtle_2.towards(turtle_1))
+    #乌龟2移动
+    turtle_2.forward(5)
+    #判断两只乌龟的距离
+    if turtle_2.distance(turtle_1)<50:
+        x.bye()
+
+
+
+
+
+
+
+
+