- 컬럼 조회 df.컬럼명 ==> series 반환 df['컬럼명'] ==> series 반환 df[['컬럼명','컬럼명']] ==> 다중컬럼 조회 dict_value={"c1":[4,5,6], "c2":[14,35,26], "c3":[43,50,61]} df=pd.DataFrame(dict_value) print(df) print(df.c1)# series 반환 ''' 0 4 1 5 2 6 Name: c1, dtype: int64 ''' print(df['c2']) #series 반환 ''' 0 14 1 35 2 26 Name: c2, dtype: int64 ''' print(df[ ["c1","c3"] ])#DataFrame 반환 ''' c1 c3 0 4 43 1 5 50 2 6 61 ''' # 특별..