Changes to use black Python formatter

.github/workflows/lint.yml

@@ -0,0 +1,51 @@
+# Check source.
+name: lint
+on:
+  pull_request:
+    branches:
+    - main
+  push:
+    branches:
+    - main
+permissions: read-all
+jobs:
+  black:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v6
+    - name: Check format of Python code
+      uses: psf/black@stable
+      with:
+        options: "--check"
+        src: "."
+  pylint:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ['3.14']
+    container:
+      image: ubuntu:26.04
+    steps:
+    - uses: actions/checkout@v6
+    - name: Set up container
+      env:
+        DEBIAN_FRONTEND: noninteractive
+      run: |
+        apt-get update -q
+        apt-get install -y libterm-readline-gnu-perl locales software-properties-common
+        locale-gen en_US.UTF-8
+        ln -f -s /usr/share/zoneinfo/UTC /etc/localtime
+    - name: Install dependencies
+      env:
+        DEBIAN_FRONTEND: noninteractive
+      run: |
+        add-apt-repository -y universe
+        add-apt-repository -y ppa:deadsnakes/ppa
+        add-apt-repository -y ppa:gift/dev
+        apt-get update -q
+        apt-get install -y build-essential git pkg-config python${{ matrix.python-version }} python${{ matrix.python-version }}-dev python${{ matrix.python-version }}-venv python3-pip python3-setuptools tox
+    - name: Run linter
+      env:
+        LANG: en_US.UTF-8
+      run: |
+        tox -e pylint

.github/workflows/test_tox.yml

@@ -81,34 +81,3 @@ jobs:
       uses: codecov/codecov-action@v6
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
-  lint:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: ['3.14']
-    container:
-      image: ubuntu:26.04
-    steps:
-    - uses: actions/checkout@v6
-    - name: Set up container
-      env:
-        DEBIAN_FRONTEND: noninteractive
-      run: |
-        apt-get update -q
-        apt-get install -y libterm-readline-gnu-perl locales software-properties-common
-        locale-gen en_US.UTF-8
-        ln -f -s /usr/share/zoneinfo/UTC /etc/localtime
-    - name: Install dependencies
-      env:
-        DEBIAN_FRONTEND: noninteractive
-      run: |
-        add-apt-repository -y universe
-        add-apt-repository -y ppa:deadsnakes/ppa
-        add-apt-repository -y ppa:gift/dev
-        apt-get update -q
-        apt-get install -y build-essential git pkg-config python${{ matrix.python-version }} python${{ matrix.python-version }}-dev python${{ matrix.python-version }}-venv python3-pip python3-setuptools tox
-    - name: Run linter
-      env:
-        LANG: en_US.UTF-8
-      run: |
-        tox -e lint

.pylintrc

@@ -358,12 +358,11 @@ indent-after-paren=4
 
 # String used as indentation unit. This is usually "    " (4 spaces) or "\t" (1
 # tab).
-# indent-string='    '
-indent-string='  '
+indent-string='    '
 
 # Maximum number of characters on a single line.
 # max-line-length=100
-max-line-length=80
+max-line-length=88
 
 # Maximum number of lines in a module.
 max-module-lines=1000
@@ -599,7 +598,7 @@ spelling-store-unknown-words=no
 
 # This flag controls whether inconsistent-quotes generates a warning when the
 # character used as a quote delimiter is used inconsistently within a module.
-check-quote-consistency=no
+check-quote-consistency=yes
 
 # This flag controls whether the implicit-str-concat should generate a warning
 # on implicit string concatenation in sequences defined over several lines.

data/rpm_templates/zstd.spec

@@ -12,7 +12,7 @@ Group: Development/Libraries
 Prefix: %{{_prefix}}
 Vendor: Sergey Dryabzhinsky <sergey.dryabzhinsky@gmail.com>
 Url: https://github.com/sergey-dryabzhinsky/python-zstd
-BuildRequires: gcc, python3-devel, python3-setuptools
+BuildRequires: gcc, python3-devel, python3-pip, python3-setuptools
 
 %description
 Python bindings to Yann Collet ZSTD compression library.

data/templates/.pylintrc

@@ -358,12 +358,11 @@ indent-after-paren=4
 
 # String used as indentation unit. This is usually "    " (4 spaces) or "\t" (1
 # tab).
-# indent-string='    '
-indent-string='  '
+indent-string='    '
 
 # Maximum number of characters on a single line.
 # max-line-length=100
-max-line-length=80
+max-line-length=88
 
 # Maximum number of lines in a module.
 max-module-lines=1000
@@ -599,7 +598,7 @@ spelling-store-unknown-words=no
 
 # This flag controls whether inconsistent-quotes generates a warning when the
 # character used as a quote delimiter is used inconsistently within a module.
-check-quote-consistency=no
+check-quote-consistency=yes
 
 # This flag controls whether the implicit-str-concat should generate a warning
 # on implicit string concatenation in sequences defined over several lines.

data/templates/check_dependencies.py

@@ -4,13 +4,12 @@
 import sys
 
 # Change PYTHONPATH to include dependencies.
-sys.path.insert(0, '.')
+sys.path.insert(0, ".")
 
 import utils.dependencies  # pylint: disable=wrong-import-position
 
+if __name__ == "__main__":
+    dependency_helper = utils.dependencies.DependencyHelper()
 
-if __name__ == '__main__':
-  dependency_helper = utils.dependencies.DependencyHelper()
-
-  if not dependency_helper.CheckDependencies():
-    sys.exit(1)
+    if not dependency_helper.CheckDependencies():
+        sys.exit(1)

data/templates/docs/conf.py

@@ -9,39 +9,39 @@
 from docutils import transforms
 
 # Change PYTHONPATH to include ${python_module_name} module and dependencies.
-sys.path.insert(0, os.path.abspath('..'))
+sys.path.insert(0, os.path.abspath(".."))
 
 import ${python_module_name}  # pylint: disable=wrong-import-position
 
 import utils.dependencies  # pylint: disable=wrong-import-position
 
-
 # -- General configuration ------------------------------------------------
 
 # If your documentation needs a minimal Sphinx version, state it here.
-needs_sphinx = '2.0.1'
+needs_sphinx = "2.0.1"
 
 # Add any Sphinx extension module names here, as strings. They can be
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
-    'recommonmark',
-    'sphinx.ext.autodoc',
-    'sphinx.ext.coverage',
-    'sphinx.ext.doctest',
-    'sphinx.ext.napoleon',
-    'sphinx.ext.viewcode',
-    'sphinx_markdown_tables',
-    'sphinx_rtd_theme',
+    "recommonmark",
+    "sphinx.ext.autodoc",
+    "sphinx.ext.coverage",
+    "sphinx.ext.doctest",
+    "sphinx.ext.napoleon",
+    "sphinx.ext.viewcode",
+    "sphinx_markdown_tables",
+    "sphinx_rtd_theme",
 ]
 
 # We cannot install architecture dependent Python modules on readthedocs,
 # therefore we mock most imports.
 pip_installed_modules = set()
 
 dependency_helper = utils.dependencies.DependencyHelper(
-    dependencies_file=os.path.join('..', 'dependencies.ini'),
-    test_dependencies_file=os.path.join('..', 'test_dependencies.ini'))
+    dependencies_file=os.path.join("..", "dependencies.ini"),
+    test_dependencies_file=os.path.join("..", "test_dependencies.ini"),
+)
 modules_to_mock = set(dependency_helper.dependencies.keys())
 modules_to_mock = modules_to_mock.difference(pip_installed_modules)
 
@@ -57,114 +57,113 @@
 
 # General information about the project.
 # pylint: disable=redefined-builtin
-project = '${name_description}'
-copyright = 'The ${name_description} authors'
+project = "${name_description}"
+copyright = "The ${name_description} authors"
 version = ${python_module_name}.__version__
 release = ${python_module_name}.__version__
 
 # Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
+templates_path = ["_templates"]
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
-exclude_patterns = ['_build']
+exclude_patterns = ["_build"]
 
 # The master toctree document.
-master_doc = 'index'
+master_doc = "index"
 
 # The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
+pygments_style = "sphinx"
 
 
 # -- Options for HTML output ----------------------------------------------
 
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
-html_theme = 'sphinx_rtd_theme'
+html_theme = "sphinx_rtd_theme"
 
 # Output file base name for HTML help builder.
-htmlhelp_basename = '${htmlhelp_basename}doc'
+htmlhelp_basename = "${htmlhelp_basename}doc"
 
 
 # -- Options linkcheck ----------------------------------------------------
 
-linkcheck_ignore = [
-]
+linkcheck_ignore = []
 
 
 # -- Code to rewrite links for readthedocs --------------------------------
 
 # This function is a Sphinx core event callback, the format of which is detailed
 # here: https://www.sphinx-doc.org/en/master/extdev/appapi.html#events
 
+
 # pylint: disable=unused-argument
 def RunSphinxAPIDoc(app):
-  """Runs sphinx-apidoc to auto-generate documentation.
+    """Runs sphinx-apidoc to auto-generate documentation.
 
-  Args:
-    app (sphinx.application.Sphinx): Sphinx application. Required by the
-        the Sphinx event callback API.
-  """
-  current_directory = os.path.abspath(os.path.dirname(__file__))
-  module_path = os.path.join(current_directory, '..', '${python_module_name}')
-  api_directory = os.path.join(current_directory, 'sources', 'api')
-  apidoc.main(['-o', api_directory, module_path, '--force'])
+    Args:
+      app (sphinx.application.Sphinx): Sphinx application. Required by the
+          the Sphinx event callback API.
+    """
+    current_directory = os.path.abspath(os.path.dirname(__file__))
+    module_path = os.path.join(current_directory, "..", "${python_module_name}")
+    api_directory = os.path.join(current_directory, "sources", "api")
+    apidoc.main(["-o", api_directory, module_path, "--force"])
 
 
 class MarkdownLinkFixer(transforms.Transform):
-  """Transform definition to parse .md references to internal pages."""
+    """Transform definition to parse .md references to internal pages."""
 
-  default_priority = 1000
+    default_priority = 1000
 
-  _URI_PREFIXES = []
+    _URI_PREFIXES = []
 
-  def _FixLinks(self, node):
-    """Corrects links to .md files not part of the documentation.
+    def _FixLinks(self, node):
+        """Corrects links to .md files not part of the documentation.
 
-    Args:
-      node (docutils.nodes.Node): docutils node.
+        Args:
+          node (docutils.nodes.Node): docutils node.
 
-    Returns:
-      docutils.nodes.Node: docutils node, with correct URIs outside
-          of Markdown pages outside the documentation.
-    """
-    if isinstance(node, nodes.reference) and 'refuri' in node:
-      reference_uri = node['refuri']
-      for uri_prefix in self._URI_PREFIXES:
-        if (reference_uri.startswith(uri_prefix) and not (
-            reference_uri.endswith('.asciidoc') or
-            reference_uri.endswith('.md'))):
-          node['refuri'] = reference_uri + '.md'
-          break
+        Returns:
+          docutils.nodes.Node: docutils node, with correct URIs outside
+              of Markdown pages outside the documentation.
+        """
+        if isinstance(node, nodes.reference) and "refuri" in node:
+            reference_uri = node["refuri"]
+            for uri_prefix in self._URI_PREFIXES:
+                if reference_uri.startswith(uri_prefix) and not (
+                    reference_uri.endswith(".asciidoc") or reference_uri.endswith(".md")
+                ):
+                    node["refuri"] = reference_uri + ".md"
+                    break
 
-    return node
+        return node
 
-  def _Traverse(self, node):
-    """Traverses the document tree rooted at node.
+    def _Traverse(self, node):
+        """Traverses the document tree rooted at node.
 
-    Args:
-      node (docutils.nodes.Node): docutils node.
-    """
-    self._FixLinks(node)
+        Args:
+          node (docutils.nodes.Node): docutils node.
+        """
+        self._FixLinks(node)
 
-    for child_node in node.children:
-      self._Traverse(child_node)
+        for child_node in node.children:
+            self._Traverse(child_node)
 
-  # pylint: disable=arguments-differ
-  def apply(self):
-    """Applies this transform on document tree."""
-    self._Traverse(self.document)
+    # pylint: disable=arguments-differ
+    def apply(self):
+        """Applies this transform on document tree."""
+        self._Traverse(self.document)
 
 
 # pylint: invalid-name
 def setup(app):
-  """Called at Sphinx initialization.
-
-  Args:
-    app (sphinx.application.Sphinx): Sphinx application.
-  """
-  # Triggers sphinx-apidoc to generate API documentation.
-  app.connect('builder-inited', RunSphinxAPIDoc)
-  app.add_config_value(
-      'recommonmark_config', {'enable_auto_toc_tree': True}, True)
-  app.add_transform(MarkdownLinkFixer)
+    """Called at Sphinx initialization.
+
+    Args:
+      app (sphinx.application.Sphinx): Sphinx application.
+    """
+    # Triggers sphinx-apidoc to generate API documentation.
+    app.connect("builder-inited", RunSphinxAPIDoc)
+    app.add_config_value("recommonmark_config", {"enable_auto_toc_tree": True}, True)
+    app.add_transform(MarkdownLinkFixer)