auto save

my_tree.py

+import turtle
+
+pen = turtle.Turtle()
+pen.color('sienna')
+# 画布大小
+w = turtle.Screen()
+w.bgcolor('wheat')      # wheat小麦
+
+# 移动到起点
+# pen.left(90)
+# pen.up()
+# pen.backward(150)    # 后退
+# pen.down()
+# pen.forward(150)
+# pen.right(30)
+# pen.forward(80)
+# pen.up()
+# pen.backward(80)
+# pen.down()
+# pen.left(60)
+# pen.forward(80)
+# pen.backward(80)
+# pen.right(30)
+# pen.backward(150)
+pen.left(90)
+pen.speed(0)
+def tree(a):
+    if a>=5:
+        pen.forward(a)
+        pen.right(30)
+        tree(a-3)
+        
+        pen.left(60)
+        tree(a-3)
+        pen.right(30)
+        pen.up()
+        pen.backward(a)
+        pen.down()
+
+    
+
+tree(100)
+
+
+
+
+
+
+
+
+
+
+turtle.done()