ci: Add Python 3.12.

Use `importlib-metadata` for newer Python versions as well.

Fixes zulip#829.

Author: Niloth-p

.github/workflows/zulip-ci.yml

@@ -35,6 +35,12 @@ jobs:
             os: bookworm
             legacy_client_interface: "7"
             server_version: refs/tags/7.0
+          # Ubuntu 24.04 ships with Python 3.12.3.
+          - docker_image: zulip/ci:noble
+            name: Ubuntu 24.04 (Python 3.12, backend)
+            os: noble
+            legacy_client_interface: "8"
+            server_version: refs/tags/8.5
 
     runs-on: ubuntu-latest
     name: ${{ matrix.name }} (Zulip ${{matrix.server_version}})

.github/workflows/zulip-tests.yml

@@ -32,7 +32,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest]
-        python-version: ["3.9", "3.10", "3.11"]
+        python-version: ["3.9", "3.10", "3.11", "3.12"]
 
     steps:
       - uses: actions/checkout@v4

zulip/setup.py

@@ -45,6 +45,7 @@ def recur_expand(target_root: Any, dir: Any) -> Generator[Tuple[str, List[str]],
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
     ],
     python_requires=">=3.9",
     url="https://www.zulip.org/",

zulip_bots/setup.py

@@ -35,6 +35,7 @@
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
     ],
     python_requires=">=3.9",
     url="https://www.zulip.org/",
@@ -55,7 +56,7 @@
         "lxml",
         "BeautifulSoup4",
         "typing_extensions>=4.5.0",
-        'importlib-metadata >= 3.6; python_version  < "3.10"',
+        "importlib-metadata>=3.6",
     ],
     packages=find_packages(),
     package_data=package_data,

zulip_bots/zulip_bots/finder.py

@@ -35,11 +35,6 @@ class DuplicateRegisteredBotNameError(Exception):
 
 
 def import_module_from_zulip_bot_registry(name: str) -> Tuple[str, Optional[ModuleType]]:
-    # Prior to Python 3.10, calling importlib.metadata.entry_points returns a
-    # SelectableGroups object when no parameters is given. Currently we use
-    # the importlib_metadata library for compatibility, but we need to migrate
-    # to the built-in library when we start to adapt Python 3.10.
-    # https://importlib-metadata.readthedocs.io/en/latest/using.html#entry-points
     registered_bots = metadata.entry_points(group="zulip_bots.registry")
     matching_bots = [bot for bot in registered_bots if bot.name == name]
 

zulip_botserver/setup.py

@@ -23,6 +23,7 @@
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
+        "Programming Language :: Python :: 3.12",
     ],
     python_requires=">=3.9",
     url="https://www.zulip.org/",