save project

my_tree.py

+import turtle
+import random
+pen = turtle.Turtle()
+pen.color('pink')
+# 画布大小
+w = turtle.Screen()
+w.bgcolor('brown')      # wheat小麦
+
+# 移动到起点
+
+pen.right(-90)
+pen.up()
+pen.forward(-150)    # 后退
+pen.down()
+def binbin(n):
+    if n>=10:
+        pen.pensize(n/2)
+        if n<30:
+            color_gy=["black","orange","green","pink"]
+            color=random.choice(color_gy)
+            pen.pensize(n/3)
+            pen.color(color)
+        else:
+            pen.pensize(n/10)
+            pen.color("yellow")
+        a=random.randint(5,30)
+        b=random.randint(5,15)
+
+
+
+        
+        
+        pen.backward(-n)
+        pen.right(a)
+        binbin(n-b)
+        pen.right(-a)
+        pen.down()
+        binbin(n-22)
+        pen.left(-2*a)
+        pen.forward(-n-b)
+binbin(56)
+
+
+
+turtle.done()