<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def new_gc(self):
 """ Return an instance of a GraphicsContextWx, and sets the current gc copy """

        DEBUG_MSG('new_gc()', 2, self)
        self.gc = GraphicsContextWx(self.bitmap, self)
        self.gc.select()
        self.gc.unselect()
        return self.gc