auto save

my_tree.py

+import turtle
+import random
+p = turtle.Turtle()
+p.color('sienna')
+p.lt(90)
+# 画布大小
+w = turtle.Screen()
+w.bgcolor('wheat') 
+
+def tree(n):
+    if n>=0:
+        a=random.randint(0,30)
+        c=random.randint(1,15)
+        
+        if n<=12:
+            colorlist=["snow","lightcoral"]
+            color=random.choice(colorlist)
+            p.pencolor(color)
+            p.pensize(n/3)
+        else:
+            p.pencolor("sienna")
+            p.pensize(n/10)  
+
+        p.fd(n)
+        p.right(a)
+        tree(n-c)
+        p.left(2*a)
+        tree(n-c)
+        p.right(a)
+        p.up()
+        p.bk(n)
+        p.down()
+p.up()
+p.bk(200)
+p.down()
+tree(60)
+turtle.done()