"""
RawTurtle类测试程序
"""
from turtle import TurtleScreen, RawTurtle, TK
root = TK.Tk() # 新建根窗口
canvas1 = TK.Canvas(root, width=300, height=200, bg="#ddffff")
canvas1.pack()
screen = TurtleScreen(canvas1)
龟1 = RawTurtle(screen)
for i in range(4):
龟1.fd(100)
龟1.right(90)
root.mainloop()
