Drop Python 3.8, test PyPy 3.10 (#323)

* Drop Python 3.8, test PyPy 3.10

* Fix lint

* Require nbconvert>=7.1.0 in tests

* Fix tests

* Skip test Interrupt.ipynb on PyPy

.github/workflows/main.yml

@@ -42,16 +42,10 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest", "macos-latest", "windows-latest"]
-        python-version: ["3.8", "3.11"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
         include:
-          - os: windows-latest
-            python-version: "3.9"
           - os: ubuntu-latest
-            python-version: "pypy-3.8"
-          - os: ubuntu-latest
-            python-version: "3.12"
-          - os: macos-latest
-            python-version: "3.10"
+            python-version: "pypy-3.10"
     steps:
       - name: Checkout
         uses: actions/checkout@v4

nbclient/_version.py

@@ -1,14 +1,15 @@
 """Version info."""
+from __future__ import annotations
+
 import re
-from typing import List, Union
 
 __version__ = "0.10.1"
 
 # Build up version_info tuple for backwards compatibility
 pattern = r"(?P<major>\d+).(?P<minor>\d+).(?P<patch>\d+)(?P<rest>.*)"
 match = re.match(pattern, __version__)
 if match:
-    parts: List[Union[int, str]] = [int(match[part]) for part in ["major", "minor", "patch"]]
+    parts: list[int | str] = [int(match[part]) for part in ["major", "minor", "patch"]]
     if match["rest"]:
         parts.append(match["rest"])
 else:

pyproject.toml

@@ -12,7 +12,7 @@ dynamic = [
 description = "A client library for executing notebooks. Formerly nbconvert's ExecutePreprocessor."
 readme = "README.md"
 license = { file = "LICENSE" }
-requires-python = ">=3.8.0"
+requires-python = ">=3.9.0"
 authors = [
     { name = "Jupyter Development Team", email = "[email protected]" },
 ]
@@ -29,10 +29,11 @@ classifiers = [
     "License :: OSI Approved :: BSD License",
     "Programming Language :: Python",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
 ]
 dependencies = [
     "jupyter_client>=6.1.12",
@@ -47,7 +48,7 @@ test = [
     "ipykernel>=6.19.3",
     "ipython",
     "ipywidgets",
-    "nbconvert>=7.0.0",
+    "nbconvert>=7.1.0",
     "pytest-asyncio",
     "pytest-cov>=4.0",
     "pytest>=7.0,<8",

tests/test_cli.py

@@ -1,3 +1,4 @@
+import sys
 from pathlib import Path
 from subprocess import CalledProcessError, check_output
 from unittest.mock import call, mock_open, patch
@@ -6,6 +7,11 @@
 
 from nbclient.cli import NbClientApp
 
+if sys.version_info >= (3, 13):
+    PATH_OPEN_CALL_STEP = 4
+else:
+    PATH_OPEN_CALL_STEP = 3
+
 current_dir = Path(__file__).parent.absolute()
 
 
@@ -60,7 +66,7 @@ def test_mult(input_names, relative, inplace, jupyterapp, client, reader, writer
     # add suffix if needed
     paths = [p.with_suffix(".ipynb") for p in paths]
 
-    assert path_open.mock_calls[::3] == [call(p) for p in paths]
+    assert path_open.mock_calls[::PATH_OPEN_CALL_STEP] == [call(p) for p in paths]
     assert reader.call_count == len(paths)
     # assert reader.mock_calls == [call(p, as_version=4) for p in paths]
 
@@ -114,7 +120,7 @@ def test_output(input_names, relative, output_base, jupyterapp, client, reader,
     # add suffix if needed
     paths = [p.with_suffix(".ipynb") for p in paths]
 
-    assert path_open.mock_calls[::3] == [call(p) for p in paths]
+    assert path_open.mock_calls[::PATH_OPEN_CALL_STEP] == [call(p) for p in paths]
     assert reader.call_count == len(paths)
 
     expected = []

tests/test_client.py

@@ -11,6 +11,7 @@
 import threading
 import warnings
 from base64 import b64decode, b64encode
+from platform import python_implementation
 from queue import Empty
 from typing import Any
 from unittest.mock import MagicMock, Mock
@@ -325,14 +326,15 @@ def filter_messages_on_error_output(err_output):
         ("Factorials.ipynb", {"kernel_name": "python"}),
         ("HelloWorld.ipynb", {"kernel_name": "python"}),
         ("Inline Image.ipynb", {"kernel_name": "python"}),
-        (
+        pytest.param(
             "Interrupt.ipynb",
             {
                 "kernel_name": "python",
                 "timeout": 3,
                 "interrupt_on_timeout": True,
                 "allow_errors": True,
             },
+            marks=pytest.mark.skipif(python_implementation() == "PyPy", reason="PyPy hangs"),
         ),
         ("JupyterWidgets.ipynb", {"kernel_name": "python"}),
         ("Skip Exceptions with Cell Tags.ipynb", {"kernel_name": "python"}),