Partial clean up of Python 3.7 compatibility (#2928)

* Drop typing_extensions dependency (not necessary when targeting Python 3.8+)

* Bump python_requires to >=3.8, drop importlib-metadata shim dependency

* Cease testing on Python 3.7

* Add 3.8 test

---------

Co-authored-by: dvora-h <[email protected]>

Author: akx

.github/workflows/integration.yaml

@@ -57,7 +57,7 @@ jobs:
        max-parallel: 15
        fail-fast: false
        matrix:
-         python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', 'pypy-3.7', 'pypy-3.8', 'pypy-3.9']
+         python-version: ['3.8', '3.9', '3.10', '3.11', 'pypy-3.8', 'pypy-3.9']
          test-type: ['standalone', 'cluster']
          connection-type: ['hiredis', 'plain']
      env:
@@ -111,7 +111,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.7', '3.11']
+        python-version: ['3.8', '3.11']
         test-type: ['standalone', 'cluster']
         connection-type: ['hiredis', 'plain']
         protocol: ['3']
@@ -160,7 +160,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', 'pypy-3.7', 'pypy-3.8', 'pypy-3.9']
+        python-version: ['3.8', '3.9', '3.10', '3.11', 'pypy-3.8', 'pypy-3.9']
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v4

redis/_parsers/hiredis.py

@@ -1,15 +1,13 @@
 import asyncio
 import socket
 import sys
-from typing import Callable, List, Optional, Union
+from typing import Callable, List, Optional, TypedDict, Union
 
 if sys.version_info.major >= 3 and sys.version_info.minor >= 11:
     from asyncio import timeout as async_timeout
 else:
     from async_timeout import timeout as async_timeout
 
-from redis.compat import TypedDict
-
 from ..exceptions import ConnectionError, InvalidResponse, RedisError
 from ..typing import EncodableT
 from ..utils import HIREDIS_AVAILABLE

redis/asyncio/client.py

@@ -15,9 +15,11 @@
     Mapping,
     MutableMapping,
     Optional,
+    Protocol,
     Set,
     Tuple,
     Type,
+    TypedDict,
     TypeVar,
     Union,
     cast,
@@ -55,7 +57,6 @@
     AsyncSentinelCommands,
     list_or_args,
 )
-from redis.compat import Protocol, TypedDict
 from redis.credentials import CredentialProvider
 from redis.exceptions import (
     ConnectionError,

redis/asyncio/connection.py

@@ -17,9 +17,11 @@
     List,
     Mapping,
     Optional,
+    Protocol,
     Set,
     Tuple,
     Type,
+    TypedDict,
     TypeVar,
     Union,
 )
@@ -34,7 +36,6 @@
 
 from redis.asyncio.retry import Retry
 from redis.backoff import NoBackoff
-from redis.compat import Protocol, TypedDict
 from redis.connection import DEFAULT_RESP_VERSION
 from redis.credentials import CredentialProvider, UsernamePasswordCredentialProvider
 from redis.exceptions import (

redis/commands/cluster.py

@@ -7,13 +7,13 @@
     Iterable,
     Iterator,
     List,
+    Literal,
     Mapping,
     NoReturn,
     Optional,
     Union,
 )
 
-from redis.compat import Literal
 from redis.crc import key_slot
 from redis.exceptions import RedisClusterException, RedisError
 from redis.typing import (

redis/commands/core.py

@@ -12,6 +12,7 @@
     Iterable,
     Iterator,
     List,
+    Literal,
     Mapping,
     Optional,
     Sequence,
@@ -20,7 +21,6 @@
     Union,
 )
 
-from redis.compat import Literal
 from redis.exceptions import ConnectionError, DataError, NoScriptError, RedisError
 from redis.typing import (
     AbsExpiryT,

redis/compat.py

@@ -7,13 +7,12 @@
     Awaitable,
     Iterable,
     Mapping,
+    Protocol,
     Type,
     TypeVar,
     Union,
 )
 
-from redis.compat import Protocol
-
 if TYPE_CHECKING:
     from redis._parsers import Encoder
     from redis.asyncio.connection import ConnectionPool as AsyncConnectionPool

redis/typing.py

@@ -34,10 +34,8 @@
     },
     author="Redis Inc.",
     author_email="[email protected]",
-    python_requires=">=3.7",
+    python_requires=">=3.8",
     install_requires=[
-        'importlib-metadata >= 1.0; python_version < "3.8"',
-        'typing-extensions; python_version<"3.8"',
         'async-timeout>=4.0.2; python_full_version<="3.11.2"',
     ],
     classifiers=[
@@ -49,7 +47,6 @@
         "Programming Language :: Python",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",