小编Nas*_*uba的帖子

我试图理解以下逻辑地图图像的代码，但我被困在了

ys = [ ]
rs = numpy.linspace(0, 4, 400) 

什么rs意思？什么i in range()意思？我将衷心感谢您的帮助！

def f(x, r):
    """Discrete logistic equation with parameter r"""
    return r*x*(1-x)

if __name__ == '__main__':
    # initial condition for x
    ys = []
    rs = numpy.linspace(0, 4, 400)
    for r in rs:
        x = 0.1
        for i in range(500):
            x = f(x, r)

        for i in range(50):
            x = f(x, r)
            ys.append([r, x])

    ys = numpy.array(ys)
    pylab.plot(ys[:,0], ys[:,1], '.')
    pylab.show()