Animation error

[griff10000]

The simulation seems to run ok. However a plot at t=0 is plotted but no animation.

The following warning is displayed:

UserWarning: Animation was deleted without rendering anything. This is most likely not intended. To prevent deletion, assign the Animation to a variable, e.g. anim, that exists until you have outputted the Animation using plt.show() or anim.save().
warnings.warn(

I have tried using plt.show() or anim.save(). but no luck.

[MarkDPhysics]

I have the same problem when running the example file 2D_double_slit.py, but I get no warning. I'm using anaconda3. Plots work ok, but animation shows only the the starting time step.

[marl0ny]

I have the same problem when running the example file 2D_double_slit.py, but I get no warning. I'm using anaconda3. Plots work ok, but animation shows only the the starting time step.

If you are using Spyder specifically, from this Stack Overflow answer you should type and enter %matplotlib qt in the console first before running the file.