제곧내 예시: 기존 df: | ID | Name | SEASON | Value1 | Value2 | ... | Value50 | --------------------------------------------------------------------------------------------------- | 1 | John | [Spring, Summer, Autumn] | 10 | 20 | ... | 100 | | 2 | Mary | [Winter] | 30 | 40 | ... | 200 | | 3 | Bob | [Spring, Autumn, Winter] | 50 | 60 | ... | 300 | 바꾼 df: | ID | Name | SEASON | Value1 | Value2 | ... | Val..