def basic_animation(frames=100, interval=30):
    """Plot a basic sine wave with oscillating amplitude"""
    fig = plt.figure()
    ax = plt.axes(xlim=(0, 10), ylim=(-2, 2))
    line, = ax.plot([], [], lw=2)

    x = np.linspace(0, 10, 1000)

    def init():
        line.set_data([], [])
        return line,

    def animate(i):
        y = np.cos(i * 0.02 * np.pi) * np.sin(x - i * 0.02 * np.pi)
        line.set_data(x, y)
        return line,

    return animation.FuncAnimation(fig, animate, init_func=init,
                                   frames=frames, interval=interval)
Plot a basic sine wave with oscillating amplitude