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//opt/hc_python/lib64/python3.12/site-packages/sqlalchemy/dialects/__init__.py

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# dialects/__init__.py
# Copyright (C) 2005-2025 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: https://www.opensource.org/licenses/mit-license.php

from __future__ import annotations

from typing import Callable
from typing import Optional
from typing import Type
from typing import TYPE_CHECKING

from .. import util

if TYPE_CHECKING:
    from ..engine.interfaces import Dialect

__all__ = ("mssql", "mysql", "oracle", "postgresql", "sqlite")

def _auto_fn(name: str) -> Optional[Callable[[], Type[Dialect]]]:
    """default dialect importer.

plugs into the :class:`.PluginLoader`
    as a first-hit system.

"""
    if "." in name:
        dialect, driver = name.split(".")
    else:
        dialect = name
        driver = "base"

try:
        if dialect == "mariadb":
            # it's "OK" for us to hardcode here since _auto_fn is already
            # hardcoded.   if mysql / mariadb etc were third party dialects
            # they would just publish all the entrypoints, which would actually
            # look much nicer.
            module = __import__(
                "sqlalchemy.dialects.mysql.mariadb"
            ).dialects.mysql.mariadb
            return module.loader(driver)  # type: ignore
        else:
            module = __import__("sqlalchemy.dialects.%s" % (dialect,)).dialects
            module = getattr(module, dialect)
    except ImportError:
        return None

if hasattr(module, driver):
        module = getattr(module, driver)
        return lambda: module.dialect
    else:
        return None

registry = util.PluginLoader("sqlalchemy.dialects", auto_fn=_auto_fn)

plugins = util.PluginLoader("sqlalchemy.plugins")

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Name	Size	Perms	Modified	Actions
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__pycache__ DIR	-	drwxr-xr-x	2025-04-04 08:02:01	Edit Download recursive recursive
type_migration_guidelines.txt	8.05 KB	lrw-r--r--	2025-04-04 08:02:01	Edit Download recursive recursive
_typing.py	971 B	lrw-r--r--	2025-04-04 08:02:01	Edit Download recursive recursive
__init__.py	1.73 KB	lrw-r--r--	2025-04-04 08:02:01	Edit Download recursive recursive

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