def make_signature(func):
    """
    Returns a tuple containing the paramenter list with defaults
    and parameter list.

    Examples
    --------
    >>> def f(a, b, c=2):
    >>>     return a * b * c
    >>> print(make_signature(f))
    (['a', 'b', 'c=2'], ['a', 'b', 'c'])
    """

    spec = inspect.getfullargspec(func)
    if spec.defaults is None:
        n_wo_defaults = len(spec.args)
        defaults = ('',) * n_wo_defaults
    else:
        n_wo_defaults = len(spec.args) - len(spec.defaults)
        defaults = ('',) * n_wo_defaults + tuple(spec.defaults)
    args = []
    for var, default in zip(spec.args, defaults):
        args.append(var if default == '' else var + '=' + repr(default))
    if spec.varargs:
        args.append('*' + spec.varargs)
    if spec.varkw:
        args.append('**' + spec.varkw)
    return args, spec.args