auto save

my_tree.py

+import turtle
+import random
+
+a = turtle.Turtle()
+a.color('sienna')
+# 画布大小
+w = turtle.Screen()
+w.bgcolor('wheat')      # wheat小麦
+
+# 移动到起点
+a.left(90)
+a.up()
+a.backward(150)    # 后退
+a.down()
+
+a.speed(0)
+
+
+# ikun
+# ikun
+# ikun lightcoral
+def tree(x):
+    if x>=0:
+        if x <=20:
+            color_list=["green","yellow"]#,"red","blue","white","black","pink","lightblue","lightgreen"
+            color=random.choice(color_list)
+            a.color(color)
+            a.pensize(x/3)
+        else:
+            a.color("sienna")
+            a.pensize(x/10)
+        a.forward(x)
+        angle=random.random()
+        a.right(30*angle)
+        length=1.5*random.random()
+        tree(x-10*length)
+        a.left(60*angle)
+        tree(x-10*length)
+        a.right(30*angle)
+        a.penup()
+        a.forward(-x)
+        a.pendown()
+tree(60)
+
+turtle.done()