関連ワード:  python dataframe change column type to int    python dataframe change column type to int64    python dataframe change column type from float to int    python pandas change column type float to int    pandas dataframe change column type to int    pandas dataframe set column type to int    pandas change column type to int    pandas change column type to int with nan    pandas change column type to int64    pandas change column type int to string  
結果 : python dataframe change column type to int