How to draw a pacman shape?

Dear Michael,

I’m sorry, now I have an additional question.

If I want to draw an open circle like this, what is the best way to do it?

With my current knowledge (I got the idea from here), I can do so by superimposing a circle. However, when I use the lines below, I get some unwanted line like this.

wedge = visual.RadialStim(win, tex='None', color=1, units='height', size=[0.5, 0.5], 
    angularRes=360, visibleWedge=[0, 270], interpolate=False,
    autoLog=False, ori=135)

circle = visual.Circle(win, units='height', size=[0.4, 0.4], fillColor=0)

I would very much appreciate it if you could share some possible tip. Thank you so much for your time!

Best,
Takashi