save project

Untitled-1.py.py

@@ -3,9 +3,8 @@ import random
 pen = turtle.Turtle()
 pen.color('sienna')
 # 画布大小
-pen.pensize(6)
 w = turtle.Screen()
-w.bgcolor('black')      
+w.bgcolor('wheat')      
 
 # 移动到起点
 pen.left(90)
@@ -15,6 +14,16 @@ pen.down()
 
 def tree(n):
    if n>=0: 
+        if n<=12:
+            list=["snow","lightcoral"]
+            g=random.choice(list)
+           
+            pen.pencolor(g)
+            
+            pen.pensize=(n/3)
+        else:
+            pen.pencolor("sienna")
+            
         a=random.randint(0,30)
         b=random.randint(0,15)
         pen.forward(n)
@@ -27,5 +36,4 @@ def tree(n):
         pen.backward(n)
         pen.pendown()
 tree(60)
-
 turtle.done()  
\ No newline at end of file