関連ワード:  python number of unique values in list    python number of distinct values in list    python find number of unique values in list    python count frequency of unique values in list    python count occurrences of unique values in list    python count all unique values in list    python count of distinct values in a list    python count different values in list    count unique entries in list python    python count unique values in list of dicts  
結果 : python number of unique values in list