python - How to save an animation as gif and show it at the same time? -

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i wrote code generates , shows matplotlib animation. able save animation gif.

however when these 2 actions sequentially (first saving gif, , showing animation, because plt.show() blocking call, shown animation doesn't start beginning; seems it's first used gif saving routine.

my idea show animation in window using plt.show(), , save same animation gif disk (before, or ideally during animation). i've tried solve using threads or creating new figure, wasn't able pull off - shown animation modified saving routine. also, putting plt.show thread didn't work (because handles drawing screen, suppose, needs in main thread).

here's code i'm using:

import matplotlib.pyplot plt matplotlib import animation visualizer import visualize import updater   def run(k, update_func=updater.uniform,         steps=1000, vis_steps=50,         alpha_init=0.3, alpha_const=100, alpha_speed=0.95,         diameter_init=3, diameter_const=1, diameter_speed=1,         xlim=(-1, 1), ylim=(-1, 1),         points_style='ro', lines_style='b-',         save_as_gif=false):      fig = plt.figure()     ax = fig.add_subplot(111, xlim=xlim, ylim=ylim)      global curr_alpha, curr_diameter, points, lines      points, = ax.plot([], [], points_style)     lines, = ax.plot([], [], lines_style)      curr_alpha = alpha_init     curr_diameter = diameter_init      def update_attributes(i):         global curr_alpha, curr_diameter          if % alpha_const == 0:             curr_alpha *= alpha_speed         if % diameter_const == 0:             curr_diameter *= diameter_speed      def init():         lines.set_data([], [])         points.set_data([], [])      def loop(i):         j in range(vis_steps):             update_func(k, curr_alpha=curr_alpha, curr_diameter=curr_diameter)             update_attributes(i * vis_steps + j)         visualize(k, points, lines)         return points, lines      anim = animation.funcanimation(fig, loop, init_func=init, frames=steps // vis_steps, interval=1, repeat=false)      if save_as_gif:         anim.save('gifs/%s.gif' % save_as_gif, writer='imagemagick')      plt.show()


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