Get value of time (t) in ode function

[Dragomordor]

Hi, I have a term in my ode that is dependant on the exact time of evaluation. This is because I am look at a reactor with inflow data, but essentially it can be shown using an example like this:

ode(t, y, p, inflowdata):

   time_data = inflowdata[:, 0] # First column is time points for measured data

   # Get Qin at time t
   Qin = np.interp(t, time_data, inflowdata[:, 1] # Second column are Flowrates in at each time point
   
  ....

However, because it is symbolic I cannot just use it like that and I have tried a few solutions with no luck. Can anyone help me?

[Dimlitter]

Use sympy. t is a symbol type value. I met the same issue just few weeks ago lol

[Dragomordor]

So just use sympy.t?

[Dimlitter]

Obviously not. I don't konw exactly what you want to do, but I will give you an example of mine to show how to calculate it.
Just like this:

[Dragomordor]

Yeah from what I can tell you need a continuous function in terms of t, and I tested with piecewise functions (as well as symbolic interpolation) with no luck