db.py 文件源码

def _pg_version_is_at_least(connection, version):
    try:
        v = distutils.version.LooseVersion(version)
        pg_version = connection.execute('select version();').fetchone()
        pg_version_number = pg_version[0].split()[1]
        pv = distutils.version.LooseVersion(pg_version_number)
        return v <= pv
    except ValueError:
        return False