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python绘图工具turtle常见的问题,初始坐标在哪?小乌龟爬的单位以什么为单位?常见命令right()left()和setheading()有

  • 2026-01-30 07:06:46
python绘图工具turtle常见的问题,初始坐标在哪?小乌龟爬的单位以什么为单位?常见命令right()left()和setheading()有

turtle库

画笔初始坐标在哪？

小乌龟初始位置是在画布的正中央，横轴为x轴，纵轴为y，初始坐标就为（0,0）。并且小乌龟爬动或者移动都是以像素（px）为单位。

left（）right（）

和setheading（）区别和

1：left（）可以简写成lt（）：画笔向左转动相对角度。

2：right（）可以简写成rt（）：画笔香油转动相对角度。

3：setheading（）可以简写成seth（）：画笔转动绝对角度，值为正（负），表示逆（顺）时针转动。

right（45）转动相对角度示例：

）

left(90)转动相对角度示例：

setheading（）讲解：

turtle库中有默认的规则，原始坐标原点（0,0）朝右是0°，朝左是180°，朝上90°，朝下270°。如下图所示：

setheading（180）示例：

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  1. CONNECT:[ UseTime:0.001065s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001389s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000613s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.002884s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001408s ]
  6. SELECT * FROM `set` [ RunTime:0.000621s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001499s ]
  8. SELECT * FROM `article` WHERE `id` = 464894 LIMIT 1 [ RunTime:0.000971s ]
  9. UPDATE `article` SET `lasttime` = 1770507539 WHERE `id` = 464894 [ RunTime:0.018845s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.003790s ]
  11. SELECT * FROM `article` WHERE `id` < 464894 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001066s ]
  12. SELECT * FROM `article` WHERE `id` > 464894 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001047s ]
  13. SELECT * FROM `article` WHERE `id` < 464894 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.012436s ]
  14. SELECT * FROM `article` WHERE `id` < 464894 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001924s ]
  15. SELECT * FROM `article` WHERE `id` < 464894 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001808s ]
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