turtle怎么画椭圆
时间: 2023-11-04 18:13:43 浏览: 137
要使用Python中的turtle库来画椭圆,可以通过以下步骤实现:
1.导入turtle库
```python
import turtle
```
2.创建一个画布并设置画布大小
```python
my_screen = turtle.Screen()
my_screen.setup(width=600, height=400)
```
3.创建一个turtle对象并设置形状
```python
my_turtle = turtle.Turtle()
my_turtle.shape("turtle")
```
4.使用turtle库的circle()函数来画椭圆,需要设置两个不同的半径,一个是水平方向的半径,一个是垂直方向的半径。根据椭圆的性质,水平方向的半径应该比垂直方向的半径长,因此需要分别设置两个半径的比例。
```python
my_turtle.penup()
my_turtle.goto(0, 0)
my_turtle.pendown()
horizontal_radius = 100
vertical_radius = 50
my_turtle.speed(1)
my_turtle.color("red")
my_turtle.penup()
my_turtle.goto(horizontal_radius, 0)
my_turtle.pendown()
my_turtle.left(90)
my_turtle.circle(horizontal_radius, 90)
my_turtle.circle(vertical_radius, 90)
my_turtle.circle(horizontal_radius, 90)
my_turtle.circle(vertical_radius, 90)
```
5.最后需要调用turtle库的mainloop()函数来保持绘图窗口不关闭。
```python
turtle.mainloop()
```
以上就是使用turtle库来画椭圆的完整代码。
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