使用Python语言绘制简单房子图案的步骤如下：
导入绘图库
```python
import turtle
```
创建画布
```python
window = turtle.Screen()
window.bgcolor("white")
```
创建画笔
```python
pen = turtle.Turtle()
pen.speed(1)
```
绘制房子的主体
```python
pen.penup()
pen.goto(-100, -100)
pen.pendown()
pen.color("red")
pen.begin_fill()
for _ in range(4):
pen.forward(200)
pen.left(90)
pen.end_fill()
```
绘制房顶
```python
pen.penup()
pen.goto(-100, 100)
pen.pendown()
pen.color("blue")
pen.begin_fill()
pen.goto(0, 200)
pen.goto(100, 100)
pen.goto(-100, 100)
pen.end_fill()
```
绘制门
```python
pen.penup()
pen.goto(-40, -100)
pen.pendown()
pen.color("yellow")
pen.begin_fill()
pen.forward(80)
pen.left(90)
pen.forward(120)
pen.left(90)
pen.forward(80)
pen.left(90)
pen.forward(120)
pen.end_fill()
```
以上代码使用Python的turtle库绘制了一个简单的房子图案。你可以根据需要调整颜色、大小和形状。