save project

1.py

 import turtle
 import turtle
-
-
+import random
 
 
 
 
 pen = turtle.Turtle()
 pen = turtle.Turtle()
 pen.color('sienna')
 pen.color('sienna')
-# pen.speed(1)
+pen.speed(0)
 # 画布大小
 # 画布大小
 w = turtle.Screen()
 w = turtle.Screen()
-w.bgcolor('wheat')      # wheat小麦
-
-def tree(n):
-    if n>=50:
+w.bgcolor('wheat')      # wheat小麦🌾
+
+def tree(n):#定义画树🌳
+    if n>=0:
+        pencolor = ['snow','lightcoral']
+        jiaodu = random.randint(15,30)
+        lenth = random.randint(5,10)
+        if n-lenth <5:
+            pen.color(random.choice(pencolor))
+            pen.pensize(5)
+        else:
+            pen.pensize(n/10)
+            pen.color('sienna')
         pen.forward(n)
         pen.forward(n)
-        pen.right(30)
-        tree(n-50)
-        pen.left(60)
-        tree(n-50)
-        pen.right(30)
+        pen.right(jiaodu)
+        tree(n-lenth)
+        pen.left(2*jiaodu)
+        tree(n-lenth)
+        pen.right(jiaodu)
         pen.up()
         pen.up()
         pen.backward(n)
         pen.backward(n)
         pen.down()
         pen.down()
@@ -28,7 +36,7 @@ pen.backward(150)
 pen.down()
 pen.down()
 
 
 
 
-tree(100)
+tree(80)
 
 
 turtle.done()
 turtle.done()