__init__.py 文件源码

def __go(lcls):
    global __all__
    from .. import util as _sa_util

    import inspect as _inspect

    __all__ = sorted(name for name, obj in lcls.items()
                     if not (name.startswith('_') or _inspect.ismodule(obj)))

    from .annotation import _prepare_annotations, Annotated
    from .elements import AnnotatedColumnElement, ClauseList
    from .selectable import AnnotatedFromClause
    _prepare_annotations(ColumnElement, AnnotatedColumnElement)
    _prepare_annotations(FromClause, AnnotatedFromClause)
    _prepare_annotations(ClauseList, Annotated)

    _sa_util.dependencies.resolve_all("sqlalchemy.sql")

    from . import naming