fix: ensure event loop creation for Python 3.14 compatibility (#41)

Author: ticdenis

.github/workflows/cd.yml

@@ -18,7 +18,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: '3.13'
+          python-version: '3.14'
       - name: version
         run: sed -i "s/__version__ = '.*'/__version__ = '$VERSION'/g" aiocli/__init__.py
       - name: deps

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         os: [ ubuntu-latest ]
-        python-version: [ '3.10', '3.11', '3.12', '3.13' ]
+        python-version: [ '3.10', '3.11', '3.12', '3.13', '3.14' ]
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5

Containerfile

@@ -2,7 +2,8 @@ FROM docker.io/continuumio/miniconda3:latest AS miniconda3
 
 WORKDIR /app
 
-RUN conda install -y --download-only "python=3.12" && \
+RUN conda install -y --download-only "python=3.13" && \
+    conda install -y --download-only "python=3.12" && \
     conda install -y --download-only "python=3.11" && \
     conda install -y --download-only "python=3.10"
 
@@ -11,6 +12,11 @@ COPY . ./
 ENTRYPOINT ["python3"]
 CMD ["run-script"]
 
+FROM miniconda3 AS py313
+
+RUN conda install -y "python=3.13"
+RUN --mount=type=cache,target=/root/.cache/pip python3 run-script dev-install
+
 FROM miniconda3 AS py312
 
 RUN conda install -y "python=3.12"

aiocli/commander.py

@@ -1,7 +1,14 @@
 import asyncio
 import signal
 import sys
-from asyncio import all_tasks, gather, get_event_loop
+from asyncio import (
+    all_tasks,
+    gather,
+    get_event_loop,
+    get_running_loop,
+    new_event_loop,
+    set_event_loop,
+)
 from asyncio.events import AbstractEventLoop
 from typing import Any, Callable, List, Optional, Set, Union
 
@@ -140,7 +147,16 @@ def run_app(
     override_return: Optional[bool] = None,
 ) -> Any:
     def wrapper(*args, **kwargs) -> Optional[int]:  # type: ignore
-        loop_ = loop or get_event_loop()
+        try:
+            # Try to get the currently running event loop (Python ≥3.10 preferred API).
+            # In Python 3.14+, get_event_loop() no longer creates a default loop automatically.
+            # If no loop is running yet, this raises RuntimeError — we handle that below.
+            loop_ = loop or get_running_loop()
+        except RuntimeError:
+            # No event loop exists in the current thread (Python 3.14+ behavior).
+            # Create and set a new loop to preserve backward compatibility with Python ≤3.13.
+            loop_ = new_event_loop()
+            set_event_loop(loop_)
 
         app_ = app if isinstance(app, Application) else app()
 

aiocli/commander_app.py

@@ -726,11 +726,13 @@ async def _resolve_or_retrieve_from_cache_dependency(self, of: str, annotation:
 
     async def _execute_command_handler(self, handler: CommandHandler, kwargs: Dict[str, Any]) -> Any:
         self._log(
-            msg='Executing command handler with: {0}.'.format(
-                ', '.join(['{0}={1}'.format(key, val) for key, val in kwargs.items()])
-            )
-            if kwargs
-            else 'Executing command handler.',
+            msg=(
+                'Executing command handler with: {0}.'.format(
+                    ', '.join(['{0}={1}'.format(key, val) for key, val in kwargs.items()])
+                )
+                if kwargs
+                else 'Executing command handler.'
+            ),
         )
         return await resolve_function(handler, **kwargs)
 

compose.yml

@@ -5,9 +5,9 @@ services:
       dockerfile: Containerfile
 #      target: py310
 #      target: py311
-      target: py312
+#      target: py312
 #    image: ghcr.io/aiopy/python-aiocli:py310-${VERSION:-latest}
 #    image: ghcr.io/aiopy/python-aiocli:py311-${VERSION:-latest}
-    image: ghcr.io/aiopy/python-aiocli:py312-${VERSION:-latest}
+    image: ghcr.io/aiopy/python-aiocli:py314-${VERSION:-latest}
     volumes:
       - .:/app

docs_src/docs/en/release-notes.md

@@ -1,5 +1,32 @@
 ## CHANGELOG
 
+### **1.11.x**
+
+* Drop Python 3.9 support.
+* Bump dev deps.
+
+### **1.10.x**
+
+* Drop Python 3.8 support.
+* Add Python 3.13 support.
+
+### **1.9.x**
+
+* Drop Python 3.7 support.
+* Add Python 3.12 support.
+
+### **1.8.x**
+
+* Add more controls over the original input and app output.
+
+### **1.7.x**
+
+* Improve commands and app help usage.
+* Lazy loading of the App and State instances.
+* Improve command hooks.
+* Add after middlware hook.
+* Colorize help usage.
+
 ### **1.6.x**
 
 * Add State.