関連ワード:  how to use excel file in python    how to read excel file in python    how to open excel file in python    how to read excel file in python pandas    how to read excel file in python jupyter notebook    how to access excel file in python    how to open excel file in python openpyxl    how to open excel file in python pandas    how to read excel file in python without library    how to read excel file in python without pandas