human
I wrote the below code

    def draw_circle(c, r):
        t = ((arange(0, 1.01, 0.01) * 2) * pi)
        x = ((r * cos(t)) + c[0])
        y = ((r * sin(t)) + c[1])
        plot(x, y, 'b', linewidth=2)
    imshow(im)
    if circle:
        for p in locs:
            draw_circle(p[:2], p[2])
    else:
        plot(locs[:, 0], locs[:, 1], 'ob')
    axis('off')

What's a good function header?

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Here's a good function header?
assistant
#Here's a good function header.

def plot_features(im, locs, circle=False):