声纳重复代码行-python dict

   my_dict = {
        'first: first_val,
        'second': second_val,
        'third': third_val
    }
    for key, value in my_dict.items():
        df.loc[:, key] = df.apply(
            lambda row: self._my_process(row['l1'], row['l2'], value),
            axis=1)