Python sqlalchemy 模块，__version__() 实例源码

我们从Python开源项目中，提取了以下1个代码示例，用于说明如何使用sqlalchemy.__version__()。

项目：PyDataLondon29-EmbarrassinglyParallelDAWithAWSLambda    作者：SignalMedia    | 项目源码 | 文件源码

def _is_sqlalchemy_connectable(con):
    global _sqlALCHEMY_INSTALLED
    if _sqlALCHEMY_INSTALLED is None:
        try:
            import sqlalchemy
            _sqlALCHEMY_INSTALLED = True

            from distutils.version import LooseVersion
            ver = LooseVersion(sqlalchemy.__version__)
            # For sqlalchemy versions < 0.8.2,the BIGINT type is recognized
            # for a sqlite engine,which results in a warning when trying to
            # read/write a DataFrame with int64 values. (GH7433)
            if ver < '0.8.2':
                from sqlalchemy import BigInteger
                from sqlalchemy.ext.compiler import compiles

                @compiles(BigInteger, 'sqlite')
                def compile_big_int_sqlite(type_, compiler, **kw):
                    return 'INTEGER'
        except ImportError:
            _sqlALCHEMY_INSTALLED = False

    if _sqlALCHEMY_INSTALLED:
        import sqlalchemy
        return isinstance(con, sqlalchemy.engine.Connectable)
    else:
        return False