Add tests for Python 3.11

.github/workflows/main.yml

@@ -18,7 +18,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        python_version: ['3.8', '3.9', '3.10']
+        python_version: ['3.8', '3.9', '3.10', '3.11']
 
     steps:
       - uses: actions/checkout@v2
@@ -71,7 +71,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [macos-12]
-        python_version: ['3.8', '3.9', '3.10']
+        python_version: ['3.8', '3.9', '3.10', '3.11']
 
     steps:
       - uses: actions/checkout@v2
@@ -110,7 +110,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [windows-latest]
-        python-version: ['3.8', '3.9', '3.10']
+        python-version: ['3.8', '3.9', '3.10', '3.11']
     steps:
       - uses: actions/checkout@v2
 

pyproject.toml

@@ -32,6 +32,7 @@ classifiers = [
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
 ]
 dependencies = [
     "jupyter_client>=7.4.4,<9",

voila/utils.py

@@ -14,7 +14,6 @@
 import sys
 import threading
 import warnings
-from enum import Enum
 from functools import partial
 from pathlib import Path
 from typing import Awaitable, Dict, List
@@ -29,8 +28,22 @@
 from ._version import __version__
 from .static_file_handler import TemplateStaticFileHandler
 
+try:
+    # Only exists in Python 3.11
+    from enum import StrEnum
 
-class ENV_VARIABLE(str, Enum):
+
+    class StringEnum(StrEnum):
+        pass
+except ImportError:
+    from enum import Enum
+
+
+    class StringEnum(str, Enum):
+        pass
+
+
+class ENV_VARIABLE(StringEnum):
     VOILA_PREHEAT = "VOILA_PREHEAT"
     VOILA_KERNEL_ID = "VOILA_KERNEL_ID"
     VOILA_BASE_URL = "VOILA_BASE_URL"

voila/voila_kernel_manager.py

@@ -255,7 +255,8 @@ def task_counter(tk):
                     # Start the work on the loop immediately, so it is ready when needed:
                     task = loop.create_task(
                         wait_before(
-                            delay, self._initialize(notebook_name, None, **kwargs)
+                            delay,
+                            self._initialize(notebook_name, None, **kwargs),
                         )
                     )
                     pool.append(task)