parameters: (self, x_cen, y_cen, r, stroke=1, fill=0)
docstring: special case of ellipse
docstring_summary: special case of ellipse
docstring_tokens: special case of ellipse
function: def circle(self, x_cen, y_cen, r, stroke=1, fill=0):
      """special case of ellipse"""
  
      x1 = x_cen - r
      x2 = x_cen + r
      y1 = y_cen - r
      y2 = y_cen + r
      self.ellipse(x1, y1, x2, y2, stroke, fill)
function_tokens: def circle ( self , x_cen , y_cen , r , stroke = 1 , fill = 0 ) : x1 = x_cen - r x2 = x_cen + r y1 = y_cen - r y2 = y_cen + r self . ellipse ( x1 , y1 , x2 , y2 , stroke , fill )