def get_groupby_method_args(name, obj): """ Get required arguments for a groupby method. When parametrizing a test over groupby methods (e.g. "sum", "mean", "fillna"), it is often the case that arguments are required for certain methods. Parameters ---------- name: str Name of the method. obj: Series or DataFrame pandas object that is being grouped. Returns ------- A tuple of required arguments for the method. """ if name in ("nth", "fillna", "take"): return (0,) if name == "quantile": return (0.5,) if name == "corrwith": return (obj,) return ()