save project

a.py

+import turtle
+pen=turtle.Turtle()
+pen.color('sienna')
+w=turtle.Screen()
+w.bgcolor('wheat')
+pen.left(90)
+pen.up()
+pen.backward(150)
+pen.down()
+def tree(n):
+    if n>=50:
+        pen .forward(n)
+        pen.right(30)
+        tree(n-50)
+        pen.left(60)
+        tree(n-50)
+        pen.right(30)
+        pen.up()
+        pen.backward(n)
+        pen.down()
+tree(100)
+turtle.done()
\ No newline at end of file