Progress bar of scipy ode solver with tqdm

Progress Bar with scipy.ipynb

thanks for the nice example.
I have implemented your example in my code and encountered one major issue which is related to the way the ode solver works:

in my case the ode solver does not go monotonically from small to larger time steps (at least not, when I do not restrict the time stepping).
This leads to the fact, that the solver first makes a very large step and then goes again back in time until it starts actually to do monotonic steps.

I was wondering if you might already found a solution for this type of problem, instead of restricting the stepping of the solver?

Thank you for pointing this out. The issue is that tqdm doesn't offer a native manual update operation where you can go back in time. They only offer this .update method which is supposed to be used with "increments". If I may ask, what is the behavior of the progress bar in your ODE? How bit is that first step compared to the T1-T0 range?

A workaround you can use is to catch the desired behavior using if statements and only call pbar.update when you know for sure that t is increasing.