core.py 文件源码

def cleanNullColumns(sheet):
        """
        Helper function to discard columns in sheets where each value in column is null.

        Accepts a DataFrame as the sheet argument.

        Returns the cleaned dataframe or an error Tuple of (False, error)
        """
        try:# check for and remove columns with all NaNs
            for column in sheet.columns: 
                if pd.isnull(sheet[column]).all():
                    sheet.drop(column, axis=1, inplace=True)
            return sheet

        except Exception as e:
            return False, e