autoreduce.reductions.timescale.sympy_variables_exist

sympy_variables_exist(ode_function, variables_to_check, **kwargs)

Check whether variables appear in symbolic ODE expressions.

Parameters:

• ode_function (list) – SymPy expressions to inspect.

• variables_to_check (list) – Symbols to search for in ode_function.

• **kwargs – Supports debug=True to print matching diagnostics.

Returns:

(True, variables_that_appear) when at least one requested variable is present, otherwise (False, []).

Return type:

tuple