関連ワード:  python get count of values in column    python dataframe get count of values in column    python get count of unique values in column    python get number of unique values in column    python get count of unique values in dataframe column    python pandas get count of unique values in column    python count of values in column    python dataframe get number of unique values in column    python count of unique values in column  
結果 : python get count of values in column