human
I wrote the below code

    if iterable(eq):
        match = classify_sysode(eq, func)
        eq = match['eq']
        order = match['order']
        func = match['func']
        t = list(list(eq[0].atoms(Derivative))[0].atoms(Symbol))[0]
        for i in range(len(eq)):
            for func_ in func:
                if isinstance(func_, list):
                    pass
                elif eq[i].coeff(diff(func[i], t, ode_order(eq[i], func[i]))).is_negative:
                    eq[i] = (- eq[i])
        match['eq'] = eq
        if (len(set(order.values())) != 1):
            raise ValueError('It    solves    only    those    systems    of    equations    whose    orders    are    equal')
        match['order'] = list(order.values())[0]
        def recur_len(l):
            return sum(((recur_len(item) if isinstance(item, list) else 1) for item in l))
        if (recur_len(func) != len(eq)):
            raise ValueError('dsolve()    and    classify_sysode()    work    with    number    of    functions    being    equal    to    number    of    equations')
        if (match['type_of_equation'] is None):
            raise NotImplementedError
        else:
            if (match['is_linear'] == True):
                if (match['no_of_equation'] > 3):
                    solvefunc = globals()[('sysode_linear_neq_order%(order)s' % match)]
                else:
                    solvefunc = globals()[('sysode_linear_%(no_of_equation)seq_order%(order)s' % match)]
            else:
                solvefunc = globals()[('sysode_nonlinear_%(no_of_equation)seq_order%(order)s' % match)]
            sols = solvefunc(match)
            if ics:
                constants = (Tuple(*sols).free_symbols - Tuple(*eq).free_symbols)
                solved_constants = solve_ics(sols, func, constants, ics)
                return [sol.subs(solved_constants) for sol in sols]
            return sols
    else:
        given_hint = hint
        hints = _desolve(eq, func=func, hint=hint, simplify=True, xi=xi, eta=eta, type='ode', ics=ics, x0=x0, n=n, **kwargs)
...

What's a good function header?
 Here's a good function header?
assistant
#Here's a good function header.

def dsolve(eq, func=None, hint='default', simplify=True, ics=None, xi=None, eta=None, x0=0, n=6, **kwargs):