auto save

my_tree.py

@@ -15,7 +15,7 @@ pen.speed(0)
 def tree(n):
     if n>=0:
         pen.forward(n)
-        a=random.randint(0,30)
+        a=random.randint(10,20)
         b=random.randint(0,10)
         pen.right(a)
         tree(n-b)
@@ -26,6 +26,6 @@ def tree(n):
         pen.backward(n)
         pen.down()
 
-tree(100)
+tree(40)
 turtle.done()
 turtle.done()

s.py

+import turtle
+import random
+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.speed(0)
+def tree(n):
+    if n>=0:
+        if n<=12:
+            color_list = ['snow','lightcoral']
+            color = random.choice(color_list)
+            pen.color(color)
+            pen.pensize(n / 3)
+        else:
+            pen.color('sienna')
+            pen.pensize(n / 10)
+        pen.forward(n)
+        angel = random.random()
+        pen.right(30*angel)
+        length = 1.5*random.random()
+        tree(n-10*length)
+        pen.left(60*angel)
+        tree(n-10*length)
+        pen.right(30*angel)
+        pen.up()
+        pen.backward(n)
+        pen.down()
+tree(60)
+turtle.done()
\ No newline at end of file