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
+def tree(n):
+    if n >= 0:
+        pen.forward(n)
+        angle = random.random
+    
+
+
+