Python使用turtle库绘制网格，补充水平线功能实现求助

实现逻辑 #

• 你现有代码的垂直网格线逻辑为：固定左上角起点，每次向右偏移cell_size的整数倍后，向下绘制贯穿整个网格的线段
• 水平网格线可以复用对称逻辑：固定左上角起点，每次向下偏移cell_size的整数倍后，向右绘制贯穿整个网格的线段即可

调整后完整代码 #

import math
import turtle
GRID_SIZE = 600

sub_divisions = int(input("Enter the number of sub-divisions: "))

cell_size = GRID_SIZE / sub_divisions

scn = turtle.Screen()

dan = turtle.Turtle()
dan.pu()
dan.forward(GRID_SIZE/2)
dan.right(90)
dan.forward(GRID_SIZE/2)
dan.pd()

# 绘制网格外框
for i in range(4):
    dan.right(90)
    dan.forward(GRID_SIZE)
    
# 绘制垂直网格线
for z in range(1,sub_divisions):
    dan.pu()
    dan.goto(-GRID_SIZE/2,GRID_SIZE/2)
    dan.pd()
    dan.left(90)
    dan.forward(cell_size * z)
    dan.right(90)
    dan.forward(GRID_SIZE)

# 新增：绘制水平网格线
for z in range(1,sub_divisions):
    dan.pu()
    dan.goto(-GRID_SIZE/2,GRID_SIZE/2)
    dan.pd()
    dan.right(90)
    dan.forward(cell_size * z)
    dan.left(90)
    dan.forward(GRID_SIZE)

scn.exitonclick()

方向控制说明 #

• 垂直网格线绘制时左转90度是让朝向从默认向右改为向上，移动对应距离后右转90度恢复朝下，即可向下绘制竖线
• 水平网格线绘制时右转90度是让朝向从默认向右改为向下，移动对应距离后左转90度恢复朝右，即可向右绘制水平线

内容的提问来源于stack exchange，提问作者Michelle Nguyen