Adopt ruff and address lint

.github/dependabot.yml

@@ -1,8 +1,10 @@
 version: 2
 updates:
-  # Set update schedule for GitHub Actions
   - package-ecosystem: "github-actions"
     directory: "/"
     schedule:
-      # Check for updates to GitHub Actions every weekday
+      interval: "weekly"
+  - package-ecosystem: "pip"
+    directory: "/"
+    schedule:
       interval: "weekly"

.github/workflows/tests.yml

@@ -50,12 +50,18 @@ jobs:
           codecov
       - run: hatch version 100.100.100
 
-  pre_commit:
-    runs-on: ubuntu-20.04
+  test_lint:
+    name: Test Lint
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
       - uses: jupyterlab/maintainer-tools/.github/actions/base-setup@v1
-      - uses: jupyterlab/maintainer-tools/.github/actions/pre-commit@v1
+      -  name: Run Linters
+         run: |
+          hatch run typing:test
+          hatch run lint:style
+          pipx run 'validate-pyproject[all]' pyproject.toml
+          pipx run doc8 --max-line-length=200
 
   docs:
     runs-on: ubuntu-latest
@@ -142,7 +148,7 @@ jobs:
     if: always()
     needs:
       - tests
-      - pre_commit
+      - test_lint
       - docs
       - test_minimum_versions
       - test_prereleases

.pre-commit-config.yaml

@@ -1,3 +1,6 @@
+ci:
+  autoupdate_schedule: monthly
+
 repos:
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v4.4.0
@@ -15,59 +18,23 @@ repos:
       - id: check-builtin-literals
       - id: trailing-whitespace
 
-  - repo: https://github.com/psf/black
-    rev: 22.10.0
-    hooks:
-      - id: black
-
-  - repo: https://github.com/PyCQA/isort
-    rev: 5.10.1
-    hooks:
-      - id: isort
-        files: \.py$
-
-  - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v0.991
-    hooks:
-      - id: mypy
-        additional_dependencies: [types-requests, traitlets, jupyter_core]
-        stages: [manual]
-
-  - repo: https://github.com/abravalheri/validate-pyproject
-    rev: v0.10.1
+  - repo: https://github.com/python-jsonschema/check-jsonschema
+    rev: 0.19.2
     hooks:
-      - id: validate-pyproject
-        stages: [manual]
+      - id: check-github-workflows
 
   - repo: https://github.com/executablebooks/mdformat
     rev: 0.7.16
     hooks:
       - id: mdformat
 
-  - repo: https://github.com/asottile/pyupgrade
-    rev: v3.3.0
-    hooks:
-      - id: pyupgrade
-        args: [--py37-plus]
-
-  - repo: https://github.com/PyCQA/doc8
-    rev: v1.0.0
-    hooks:
-      - id: doc8
-        args: [--max-line-length=200]
-        exclude: docs/source/other/full-config.rst
-        stages: [manual]
-
-  - repo: https://github.com/john-hen/Flake8-pyproject
-    rev: 1.2.2
+  - repo: https://github.com/psf/black
+    rev: 22.10.0
     hooks:
-      - id: Flake8-pyproject
-        alias: flake8
-        additional_dependencies:
-          ["flake8-bugbear==22.6.22", "flake8-implicit-str-concat==0.2.0"]
-        stages: [manual]
+      - id: black
 
-  - repo: https://github.com/python-jsonschema/check-jsonschema
-    rev: 0.19.2
+  - repo: https://github.com/charliermarsh/ruff-pre-commit
+    rev: v0.0.165
     hooks:
-      - id: check-github-workflows
+      - id: ruff
+        args: ["--fix"]

nbformat/_imports.py

@@ -33,7 +33,7 @@ def import_item(name):
         try:
             pak = getattr(module, obj)
         except AttributeError:
-            raise ImportError("No module named %s" % obj)
+            raise ImportError("No module named %s" % obj) from None
         return pak
     else:
         # called with un-dotted string

nbformat/_struct.py

@@ -102,7 +102,7 @@ def __setattr__(self, key, value):
         try:
             self.__setitem__(key, value)
         except KeyError as e:
-            raise AttributeError(e)
+            raise AttributeError(e) from None
 
     def __getattr__(self, key):
         """Get an attr by calling :meth:`dict.__getitem__`.
@@ -127,7 +127,7 @@ def __getattr__(self, key):
         try:
             result = self[key]
         except KeyError:
-            raise AttributeError(key)
+            raise AttributeError(key) from None
         else:
             return result
 

nbformat/converter.py

@@ -62,7 +62,7 @@ def convert(nb, to_version):
         except AttributeError as e:
             raise ValidationError(
                 f"Notebook could not be converted from version {version} to version {step_version} because it's missing a key: {e}"
-            )
+            ) from None
 
         # Recursively convert until target version is reached.
         return convert(converted, to_version)

nbformat/json_compat.py

@@ -47,7 +47,7 @@ def validate(self, data):
         try:
             self._validator(data)
         except _JsonSchemaException as error:
-            raise ValidationError(str(error), schema_path=error.path)
+            raise ValidationError(str(error), schema_path=error.path) from error
 
     def iter_errors(self, data, schema=None):
         if schema is not None:

nbformat/reader.py

@@ -74,7 +74,9 @@ def reads(s, **kwargs):
         try:
             return versions[major].to_notebook_json(nb_dict, minor=minor)
         except AttributeError as e:
-            raise ValidationError(f"The notebook is invalid and is missing an expected key: {e}")
+            raise ValidationError(
+                f"The notebook is invalid and is missing an expected key: {e}"
+            ) from None
     else:
         raise NBFormatError("Unsupported nbformat version %s" % major)
 

nbformat/sign.py

@@ -23,18 +23,7 @@
 from base64 import encodebytes
 
 from jupyter_core.application import JupyterApp, base_flags
-from traitlets import (
-    Any,
-    Bool,
-    Bytes,
-    Callable,
-    Enum,
-    Instance,
-    Integer,
-    Unicode,
-    default,
-    observe,
-)
+from traitlets import Any, Bool, Bytes, Callable, Enum, Instance, Integer, Unicode, default, observe
 from traitlets.config import LoggingConfigurable, MultipleInstanceError
 
 from . import NO_CONVERT, __version__, read, reads
@@ -139,9 +128,9 @@ def close(self):
             self.db.close()
 
     def _connect_db(self, db_file):
-        kwargs: t.Dict[str, t.Any] = dict(
-            detect_types=sqlite3.PARSE_DECLTYPES | sqlite3.PARSE_COLNAMES
-        )
+        kwargs: t.Dict[str, t.Any] = {
+            "detect_types": sqlite3.PARSE_DECLTYPES | sqlite3.PARSE_COLNAMES
+        }
         db = None
         try:
             db = sqlite3.connect(db_file, **kwargs)

nbformat/v1/nbbase.py

@@ -18,6 +18,7 @@
 
 from .._struct import Struct
 
+
 # -----------------------------------------------------------------------------
 # Code
 # -----------------------------------------------------------------------------

nbformat/v1/nbjson.py

@@ -21,6 +21,7 @@
 from .nbbase import from_dict
 from .rwbase import NotebookReader, NotebookWriter
 
+
 # -----------------------------------------------------------------------------
 # Code
 # -----------------------------------------------------------------------------

nbformat/v2/convert.py

@@ -19,6 +19,7 @@
 
 from .nbbase import new_code_cell, new_notebook, new_text_cell, new_worksheet
 
+
 # -----------------------------------------------------------------------------
 # Code
 # -----------------------------------------------------------------------------

nbformat/v2/nbbase.py

@@ -23,6 +23,7 @@
 
 from .._struct import Struct
 
+
 # -----------------------------------------------------------------------------
 # Code
 # -----------------------------------------------------------------------------

nbformat/v2/nbjson.py

@@ -20,13 +20,8 @@
 import json
 
 from .nbbase import from_dict
-from .rwbase import (
-    NotebookReader,
-    NotebookWriter,
-    rejoin_lines,
-    restore_bytes,
-    split_lines,
-)
+from .rwbase import NotebookReader, NotebookWriter, rejoin_lines, restore_bytes, split_lines
+
 
 # -----------------------------------------------------------------------------
 # Code

nbformat/v2/rwbase.py

@@ -18,6 +18,7 @@
 
 from base64 import decodebytes, encodebytes
 
+
 # -----------------------------------------------------------------------------
 # Code
 # -----------------------------------------------------------------------------

nbformat/v3/nbjson.py

@@ -7,13 +7,7 @@
 import json
 
 from .nbbase import from_dict
-from .rwbase import (
-    NotebookReader,
-    NotebookWriter,
-    rejoin_lines,
-    split_lines,
-    strip_transient,
-)
+from .rwbase import NotebookReader, NotebookWriter, rejoin_lines, split_lines, strip_transient
 
 
 class BytesEncoder(json.JSONEncoder):

nbformat/v4/nbjson.py

@@ -7,13 +7,7 @@
 import json
 
 from ..notebooknode import from_dict
-from .rwbase import (
-    NotebookReader,
-    NotebookWriter,
-    rejoin_lines,
-    split_lines,
-    strip_transient,
-)
+from .rwbase import NotebookReader, NotebookWriter, rejoin_lines, split_lines, strip_transient
 
 
 class BytesEncoder(json.JSONEncoder):

nbformat/validator.py

@@ -417,14 +417,14 @@ def validate(
     version : int
     version_minor : int
     relax_add_props : bool
-        Deprecated since 5.5.0 – will be removed in the future.
+        Deprecated since 5.5.0 - will be removed in the future.
         Wether to allow extra property in the Json schema validating the
         notebook.
     nbjson
     repair_duplicate_cell_ids : boolny
-        Deprecated since 5.5.0 – will be removed in the future.
+        Deprecated since 5.5.0 - will be removed in the future.
     strip_invalid_metadata : bool
-        Deprecated since 5.5.0 – will be removed in the future.
+        Deprecated since 5.5.0 - will be removed in the future.
 
     Returns
     -------