関連ワード:  how to know the data type in python    how to check the data type in python    how to find the data type in python    how to see the data type in python    how to identify the data type in python    how to check the data type in python dataframe    how to know the data type of dataframe in python    how to know the data type of variable in python    how to check the column data type in python    how to check data type in python pandas