Exercise 1g) - Implement custom exception 1p You should make sure that the provided initial guess u is a numpy array whose length is equal to the number of states for the ODE model. If this is not the case you should raise a special error called Invalid Initial ConditionError that is a special type of RunTimeError. Hint - Creating special exceptions You can create a special exception by inheriting from an existing exception class. For example class Invalid Initial ConditionError (RuntimeError): pass Write one test called test solve_with_different_number_of_initial_states where you test that if you provide ue as a numpy array of length 2 then a Invalid InitialConditionError is raised.