Draw a circle http://www.synapsoft.co.kr/jsp/recruit/recruitment.jsp

draw_circle.py

def draw_circle(r):
    space_num = r * 2 + 1
    def circle(x, y, radius):
        radius_point = (x - radius)**2 + (y - radius) **2
        radius_square = radius**2
        correct_value = 1
        if radius <= 3:
            correct_value = 0.7
        return radius_square * correct_value <= radius_point  <= radius_square * 1.3

    for h in range(0, space_num):
        for w in range(0, space_num):
            if circle(w, h, r):
                print("@", end="")
            else:
                print(" ", end="")
        print("")

if __name__ == "__main__":
    for x in range(1,  14):
        print("Drawing {0} radius circle".format(x))
        draw_circle(x)