可以使用Python的turtle模块来画一个简单的雪人。下面是一个示例代码：
```python
import turtle
# 画头部
turtle.fillcolor("white")
turtle.begin_fill()
turtle.circle(60)
turtle.end_fill()
# 画身体
turtle.penup()
turtle.goto(0, -80)
turtle.pendown()
turtle.fillcolor("white")
turtle.begin_fill()
turtle.circle(80)
turtle.end_fill()
# 画眼睛
turtle.penup()
turtle.goto(-20, 50)
turtle.pendown()
turtle.fillcolor("black")
turtle.begin_fill()
turtle.circle(10)
turtle.end_fill()
turtle.penup()
turtle.goto(20, 50)
turtle.pendown()
turtle.begin_fill()
turtle.circle(10)
turtle.end_fill()
# 画嘴巴
turtle.penup()
turtle.goto(-25, 20)
turtle.pendown()
turtle.pencolor("red")
turtle.pensize(3)
turtle.right(90)
turtle.circle(25, 180)
# 画身体上的按钮
turtle.penup()
turtle.goto(0, -20)
turtle.pendown()
turtle.fillcolor("black")
turtle.begin_fill()
turtle.circle(8)
turtle.end_fill()
turtle.penup()
turtle.goto(0, -50)
turtle.pendown()
turtle.fillcolor("black")
turtle.begin_fill()
turtle.circle(8)
turtle.end_fill()
turtle.penup()
turtle.goto(0, -80)
turtle.pendown()
turtle.fillcolor("black")
turtle.begin_fill()
turtle.circle(8)
turtle.end_fill()
turtle.done()
```
在Python环境中运行此代码，即可看到一个简单的雪人图案。您可以根据需要进行修改和优化。