save project

my_tree.py

+import turtle
+import random
+
+pen = turtle.Turtle()
+pen.color('sienna')
+# 画布大小
+w = turtle.Screen()
+w.bgcolor('wheat')      # wheat小麦
+pen.speed(10001)
+pen.pensize(5)
+color=["snow","lightcoral"]
+
+def tree(n):
+    if n>=0 :
+        turn=random.randint(0,40)
+        walk=random.randint(1,10)
+        if(n<=random.randint(10,15)):
+            pen.color(random.choice(color))
+            pen.pensize(n/2)
+            pen.forward(n)
+            pen.right(turn)
+            pen.left(turn*2)
+            pen.up()
+            pen.right(turn)
+            pen.backward(n)
+            pen.down()
+        else:
+            pen.color('sienna')
+            pen.pensize(n/10)
+            pen.forward(n)
+            pen.right(turn)
+            tree(n-walk)
+            pen.left(turn*2)
+            tree(n-walk)
+            pen.up()
+            pen.right(turn)
+            pen.backward(n)
+            pen.down()
+
+# 移动到起点
+pen.left(90)
+pen.up()
+pen.backward(100)
+pen.down()
+
+
+
+tree(50)
+
+tree(50)
+
+
+turtle.done()