Cease usage of the self-made Self , switch to Python's backported one

Author: Sergey Vasilyev

data_diff/cloud/datafold_api.py

@@ -2,19 +2,18 @@
 import dataclasses
 import enum
 import time
-from typing import Any, Dict, List, Optional, Type, TypeVar, Tuple
+from typing import Any, Dict, List, Optional, Type, Tuple
 
 import pydantic
 import requests
+from typing_extensions import Self
 
 from data_diff.errors import DataDiffCloudDiffFailed, DataDiffCloudDiffTimedOut, DataDiffDatasourceIdNotFoundError
 
 from ..utils import getLogger
 
 logger = getLogger(__name__)
 
-Self = TypeVar("Self", bound=pydantic.BaseModel)
-
 
 class TestDataSourceStatus(str, enum.Enum):
     SUCCESS = "ok"

data_diff/sqeleton/abcs/database_types.py

@@ -1,11 +1,12 @@
 import decimal
 from abc import ABC, abstractmethod
-from typing import Sequence, Optional, Tuple, Union, Dict, List
+from typing import Sequence, Optional, Tuple, Type, Union, Dict, List
 from datetime import datetime
 
 from runtype import dataclass
+from typing_extensions import Self
 
-from ..utils import ArithAlphanumeric, ArithUUID, Self, Unknown
+from ..utils import ArithAlphanumeric, ArithUUID, Unknown
 
 
 DbPath = Tuple[str, ...]

data_diff/sqeleton/databases/_connect.py

@@ -5,9 +5,10 @@
 import toml
 
 from runtype import dataclass
+from typing_extensions import Self
 
 from ..abcs.mixins import AbstractMixin
-from ..utils import WeakCache, Self
+from ..utils import WeakCache
 from .base import Database, ThreadedDatabase
 from .postgresql import PostgreSQL
 from .mysql import MySQL

data_diff/sqeleton/databases/base.py

@@ -11,8 +11,9 @@
 import decimal
 
 from runtype import dataclass
+from typing_extensions import Self
 
-from ..utils import is_uuid, safezip, Self
+from ..utils import is_uuid, safezip
 from ..queries import Expr, Compiler, table, Select, SKIP, Explain, Code, this
 from ..queries.ast_classes import Random
 from ..abcs.database_types import (

data_diff/sqeleton/utils.py

@@ -21,11 +21,6 @@
 
 # -- Common --
 
-try:
-    from typing import Self
-except ImportError:
-    Self = Any
-
 
 class WeakCache:
     def __init__(self):

poetry.lock

@@ -46,6 +46,7 @@ vertica-python = {version="*", optional=true}
 urllib3 = "<2"
 oracledb = {version = "*", optional=true}
 pyodbc = {version="^4.0.39", optional=true}
+typing-extensions = ">=4.0.1"
 
 [tool.poetry.dev-dependencies]
 parameterized = "*"