def validate_file_inputs(self, filepath, equations_sheet, data_sheet):
    if ((not filepath) or (not equations_sheet) or (not data_sheet)):
        raise Exception('Empty upload data inputs. Please provide valid inputs to file upload.')
    else:
        return True
    return False
def validate_file_inputs(self, filepath, equations_sheet, data_sheet):
    if ((not filepath) or (not equations_sheet) or (not data_sheet)):
        raise Exception('Empty upload data inputs. Please provide valid inputs to file upload.')
    else:
        return True
    return False