df.iloc[ํ, ์ด]df.reset_index(drop = True)df.sort_values(by = '์ด๋ฆ', ascending = False)df.[' '].str.contains(' ') #ํฌํจdf.drop_duplicates(subset = ' ', keep = 'first') # subset์ผ๋ก ์ค๋ณตํ ์์ผ๋ฉด ์ ๊ฑฐ ํ๋ ์ฒซ๋ฒ์งธ ์ผ์ด์ค๋ง ๋จ๊ธฐ๊ธฐdf.loc[df[' '] >= df[' ].mean()]df.isnull().sum()df.loc[df[' '].isnull(), ' ์ด์ด๋ฆ '] = ' ' #replace({' ' : ' '})df.loc[~df['choice_description'].str.contains('Vegetables..