def col_split(x,split,dropna,symbols,lower):
        if split is not None: 
            if symbols == False: 
                if lower == True: f = list(get(x, lower = True, rem = "all", splitex = split).fillna(np.nan).values.flatten())
                else: f = list(get(x, rem = "all", splitex = split).fillna(np.nan).values.flatten())
            else: f = list(get(x, splitex = split).fillna(np.nan).values.flatten())
        else: f = list(x.fillna(np.nan).values.flatten())
        return f