col_a col_b col_c col_d col_e col_f col_h col_i col_g
0 nan nan NaT None nan 1.000000 nan NaT nan
1 2 b 2021-01-02 00:00:00 nan nan 2.000000 TestEnum.VALUE_A NaT b
2 3 d 2021-01-03 00:00:00 2021-04-02 nan 3.000000 TestEnum.VALUE_B 2021-04-02 00:00:00 d
3 4 d 2021-01-04 00:00:00 2021-04-02 nan 4.000000 TestEnum.VALUE_B 2021-04-02 00:00:00 d