def create_variable_by_var(self, var):
        try:
            self._edit_session.add(var)
            self._edit_session.commit()
            return var
        except:
            return None
Generate the signing key string as bytes.
dataset/ETHPy150Open ODM2/ODMToolsPython/odmtools/odmservices/series_service.py/SeriesService.create_variable_by_var--crossover with--dataset/ETHPy150Open sam-washington/requests-aws4auth/requests_aws4auth/aws4signingkey.py/AWS4SigningKey.generate_key