[Bug]: better error message when trying to use multiple input sets with experiments #5200
Description
PyBaMM Version
develop
Python Version
3.10
Describe the bug
The solve function on simulations and solvers can take a list of parameter sets and solve these in parallel. However, this is not support when a simulation is passed an experiment. If you try and do this, it fails with a non-informative error. This should be make more informative about this limitation
Steps to Reproduce
import pybamm
import matplotlib.pyplot as plt
import numpy as np
experiment = pybamm.Experiment(
[("Charge at 1C for 1 hour or until 4.0 V")]
)
model = pybamm.lithium_ion.DFN()
params = pybamm.ParameterValues("Chen2020")
params["Positive particle diffusivity [m2.s-1]"] = "[input]"
params["Negative particle diffusivity [m2.s-1]"] = "[input]"
solver = pybamm.IDAKLUSolver(options={"num_threads": 4})
sim = pybamm.Simulation(model, solver=solver, experiment=experiment, parameter_values=params)
parameter_loop = [{"Positive particle diffusivity [m2.s-1]": 1e-15, "Negative particle diffusivity [m2.s-1]": 1e-15},
{"Positive particle diffusivity [m2.s-1]": 2e-15, "Negative particle diffusivity [m2.s-1]": 2e-15},
{"Positive particle diffusivity [m2.s-1]": 3e-15, "Negative particle diffusivity [m2.s-1]": 3e-15},
{"Positive particle diffusivity [m2.s-1]": 4e-15, "Negative particle diffusivity [m2.s-1]": 4e-15},
{"Positive particle diffusivity [m2.s-1]": 5e-15, "Negative particle diffusivity [m2.s-1]": 5e-15}]
solution = sim.solve(inputs=parameter_loop)fails with
Relevant log output
Traceback (most recent call last):
File "/home/mrobins/git/PyBaMM/test2.py", line 24, in <module>
solution = sim.solve(inputs=parameter_loop)
File "/home/mrobins/git/PyBaMM/src/pybamm/simulation.py", line 742, in solve
inputs = {
TypeError: 'list' object is not a mapping