.forgejo/workflows/release.yaml

@@ -1,81 +0,0 @@
----
-name: Build and publish Debian package
-on: [create]
-jobs:
-  build:
-    runs-on: docker
-    container:
-      image: docker.io/brenard/debian-python-deb:latest
-    steps:
-      - name: Check out repository code
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-      - name: Build Debian package
-        env:
-          MAINTAINER_NAME: ${{ vars.MAINTAINER_NAME }}
-          MAINTAINER_EMAIL: ${{ vars.MAINTAINER_EMAIL }}
-          DEBIAN_CODENAME: ${{ vars.DEBIAN_CODENAME }}
-        run: |
-          echo "${{ secrets.GPG_KEY }}"|base64 -d|gpg --import
-          ./build.sh
-          rm -fr dist/gitdch-*
-          mv gitdch dist/
-      - name: Upload Debian package files
-        uses: actions/upload-artifact@v3
-        with:
-          name: dist
-          path: |
-            dist
-
-  publish-forgejo:
-    runs-on: docker
-    container:
-      image: docker.io/brenard/debian-python-deb:latest
-    steps:
-      - name: Download Debian package files
-        uses: actions/download-artifact@v3
-        with:
-          name: dist
-
-      - name: Create the release
-        id: create-release
-        shell: bash
-        run: |
-          mkdir release
-          mv *.deb release/
-          mv gitdch release/
-          {
-            echo 'release_note<<EOF'
-            cat release_notes.md
-            echo 'EOF'
-          } >> "$GITHUB_OUTPUT"
-
-      - name: Publish release on Forgejo
-        uses: actions/forgejo-release@v1
-        with:
-          direction: upload
-          url: https://gitea.zionetrix.net
-          token: ${{ secrets.forgejo_token }}
-          release-dir: release
-          release-notes: ${{ steps.create-release.outputs.release_note }}
-
-  publish-aptly:
-    runs-on: docker
-    container:
-      image: docker.io/brenard/aptly-publish:latest
-    steps:
-      - name: "Download Debian package files"
-        uses: actions/download-artifact@v3
-        with:
-          name: dist
-
-      - name: "Publish Debian package on Aptly repository"
-        uses: https://gitea.zionetrix.net/bn8/aptly-publish@master
-        with:
-          api_url: ${{ vars.apt_api_url }}
-          api_username: ${{ vars.apt_api_username }}
-          api_password: ${{ secrets.apt_api_password }}
-          repo_name: ${{ vars.apt_repo_name }}
-          path: "./"
-          source_name: ${{ vars.apt_source_name }}

.forgejo/workflows/tests.yaml

@@ -1,21 +0,0 @@
----
-name: Run tests
-on: [push]
-jobs:
-  test-precommit:
-    runs-on: docker
-    container:
-      image: docker.io/brenard/python-pre-commit:latest
-    steps:
-      - name: Check out repository code
-        uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
-      - name: Install python dependencies
-        env:
-          DEBIAN_FRONTEND: noninteractive
-        run: |
-          apt-get update
-          apt-get -y install --no-install-recommends python3-git git
-      - name: Run pre-commit
-        run: pre-commit run --all-files

.pre-commit-config.yaml

@@ -1,64 +0,0 @@
-# Pre-commit hooks to run tests and ensure code is cleaned.
-# See https://pre-commit.com for more information
----
-repos:
-  - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.1.6
-    hooks:
-      - id: ruff
-        args: ["--fix"]
-  - repo: https://github.com/asottile/pyupgrade
-    rev: v3.15.0
-    hooks:
-      - id: pyupgrade
-        args: ["--keep-percent-format", "--py37-plus"]
-  - repo: https://github.com/psf/black
-    rev: 23.11.0
-    hooks:
-      - id: black
-        args: ["--target-version", "py37", "--line-length", "100"]
-  - repo: https://github.com/PyCQA/isort
-    rev: 5.12.0
-    hooks:
-      - id: isort
-        args: ["--profile", "black", "--line-length", "100"]
-  - repo: https://github.com/PyCQA/flake8
-    rev: 6.1.0
-    hooks:
-      - id: flake8
-        args: ["--max-line-length=100"]
-  - repo: https://github.com/codespell-project/codespell
-    rev: v2.2.2
-    hooks:
-      - id: codespell
-        args:
-          - --ignore-words-list=exten
-          - --skip="./.*,*.csv,*.json,*.ini,*.subject,*.txt,*.html,*.log,*.conf"
-          - --quiet-level=2
-          - --ignore-regex=.*codespell-ignore$
-          # - --write-changes  # Uncomment to write changes
-        exclude_types: [csv, json]
-  - repo: https://github.com/adrienverge/yamllint
-    rev: v1.32.0
-    hooks:
-      - id: yamllint
-        ignore: .github/
-  - repo: https://github.com/pre-commit/mirrors-prettier
-    rev: v2.7.1
-    hooks:
-      - id: prettier
-        args: ["--print-width", "100"]
-  - repo: local
-    hooks:
-      - id: pylint
-        name: pylint
-        entry: pylint
-        language: system
-        types: [python]
-        require_serial: true
-  - repo: https://github.com/PyCQA/bandit
-    rev: 1.7.5
-    hooks:
-      - id: bandit
-        args: [--skip, "B101", --recursive]
-minimum_pre_commit_version: 3.2.0

.woodpecker.yml

@@ -0,0 +1,70 @@
+clone:
+  git:
+    image: woodpeckerci/plugin-git
+    tags: true
+
+pipeline:
+  test-pylint:
+    group: test
+    image: pipelinecomponents/pylint
+    commands:
+      - pip install GitPython --quiet
+      - pylint gitdch
+
+  test-flake8:
+    group: test
+    image: pipelinecomponents/flake8
+    commands:
+      - flake8 gitdch
+
+  build:
+    image: brenard/debian-python-deb
+    when:
+      event: tag
+    commands:
+      - echo "$GPG_KEY"|base64 -d|gpg --import
+      - ./build.sh --quiet
+      - rm -fr dist/gitdch-*
+    secrets: [ maintainer_name, maintainer_email, gpg_key, debian_codename ]
+
+  publish-dryrun:
+    group: publish
+    image: alpine
+    when:
+      event: tag
+    commands:
+      - ls dist/*
+
+  publish-gitea:
+    group: publish
+    image: plugins/gitea-release
+    when:
+      event: tag
+    settings:
+      api_key:
+        from_secret: gitea_token
+      base_url: https://gitea.zionetrix.net
+      note: dist/release_notes.md
+      files:
+        - gitdch
+        - dist/*.deb
+      checksum:
+        - md5
+        - sha512
+
+  publish-apt:
+    group: publish
+    image: brenard/aptly-publish
+    when:
+      event: tag
+    settings:
+      api_url:
+        from_secret: apt_api_url
+      api_username:
+        from_secret: apt_api_username
+      api_password:
+        from_secret: apt_api_password
+      repo_name:
+        from_secret: apt_repo_name
+      path: dist
+      source_name: gitdch

.yamllint.yml

@@ -1,7 +0,0 @@
----
-extends: default
-
-rules:
-  line-length:
-    max: 100
-    level: warning

README.md

@@ -8,34 +8,29 @@ numbered using ''git describe --always --tags'' command.
 # Installation
 
 ## Dependencies
-
 ```
 apt install git python3-git
 ```
 
 ## Using git
-
 ```
 git clone https://gogs.zionetrix.net/bn8/gitdch.git /usr/local/src/gitdch
 ln -s /usr/local/src/gitdch/gitdch /usr/local/bin/gitdch
 ```
 
 ## Using wget
-
 ```
 wget -O /usr/local/bin/gitdch https://gogs.zionetrix.net/bn8/gitdch/raw/master/gitdch
 chmod +x /usr/local/bin/gitdch
 ```
 
 ## Using curl
-
 ```
 curl -o /usr/local/bin/gitdch https://gogs.zionetrix.net/bn8/gitdch/raw/master/gitdch
 chmod +x /usr/local/bin/gitdch
 ```
 
 # Usage
-
 ```
 usage: gitdch [-h] [-d] [-v] [-w] [-l LOGFILE] [-q] [-p GIT_PATH] [-o OUTPUT] [-A]
               [-n PACKAGE_NAME] [-V VERSION] [--version-suffix VERSION_SUFFIX]
@@ -59,12 +54,12 @@ optional arguments:
   -o OUTPUT, --output OUTPUT
                         Generated Debian changelog output path (default: stdout)
   -A, --append          Append mode: if the output changelog file already exists,
-                        append generated changelog lines at the beginning of the file
+                        append generated changelog lines at the begining of the file
                         (optional, default: overwriting the file)
   -n PACKAGE_NAME, --package-name PACKAGE_NAME
                         Package name
   -V VERSION, --version VERSION
-                        Current version (default: autodetected using git describe
+                        Currrent version (default: autodetected using git describe
                         --always --tags)
   --version-suffix VERSION_SUFFIX
                         Suffix for autodetected version
@@ -105,3 +100,4 @@ This program is free software; you can redistribute it and/or modify it under th
 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+

build.sh

@@ -24,7 +24,7 @@ sed -i "s/^VERSION *=.*$/VERSION = '$VERSION'/" $BDIR/gitdch
 
 if [ -z "$DEBIAN_CODENAME" ]
 then
-	echo "Retrieve debian codename using lsb_release..."
+	echo "Retreive debian codename using lsb_release..."
 	DEBIAN_CODENAME=$( lsb_release -c -s )
 else
 	echo "Use debian codename from environment ($DEBIAN_CODENAME)"

gitdch

@@ -12,166 +12,196 @@ import textwrap
 import git
 from git.exc import GitCommandError
 
-VERSION = "0.0"
-DEFAULT_GIT_PATCH = "./"
-DEFAULT_CODE_NAME = "unstable"
-DEFAULT_URGENCY = "medium"
+VERSION = '0.0'
+DEFAULT_GIT_PATCH = './'
+DEFAULT_CODE_NAME = 'unstable'
+DEFAULT_URGENCY = 'medium'
 
-parser = argparse.ArgumentParser(description=f"{__doc__} (version: {VERSION})")
-
-parser.add_argument("-d", "--debug", action="store_true", help="Show debug messages")
-
-parser.add_argument("-v", "--verbose", action="store_true", help="Show verbose messages")
-
-parser.add_argument("-w", "--warning", action="store_true", help="Show warning messages")
-
-parser.add_argument(
-    "-l", "--log-file", action="store", type=str, dest="logfile", help="Log file path"
+parser = argparse.ArgumentParser(
+    description='{0} (version: {1})'.format(__doc__, VERSION)
 )
 
 parser.add_argument(
-    "-q",
-    "--quiet",
-    action="store_true",
-    help="Quiet mode: do not log on console (only if log file is provided)",
+    '-d', '--debug',
+    action='store_true',
+    help='Show debug messages'
 )
 
 parser.add_argument(
-    "-p",
-    "--path",
+    '-v', '--verbose',
+    action='store_true',
+    help='Show verbose messages'
+)
+
+parser.add_argument(
+    '-w', '--warning',
+    action='store_true',
+    help='Show warning messages'
+)
+
+parser.add_argument(
+    '-l',
+    '--log-file',
+    action="store",
     type=str,
-    dest="git_path",
-    help="Git repository path (default: %s)" % DEFAULT_GIT_PATCH,
-    default=DEFAULT_GIT_PATCH,
+    dest="logfile",
+    help="Log file path"
 )
 
 parser.add_argument(
-    "-o",
-    "--output",
+    '-q', '--quiet',
+    action='store_true',
+    help='Quiet mode: do not log on console (only if log file is provided)'
+)
+
+parser.add_argument(
+    '-p',
+    '--path',
     type=str,
-    dest="output",
-    help="Generated Debian changelog output path (default: stdout)",
+    dest='git_path',
+    help='Git repository path (default: %s)' % DEFAULT_GIT_PATCH,
+    default=DEFAULT_GIT_PATCH
 )
 
 parser.add_argument(
-    "-A",
-    "--append",
-    action="store_true",
-    dest="append",
+    '-o',
+    '--output',
+    type=str,
+    dest='output',
+    help='Generated Debian changelog output path (default: stdout)',
+)
+
+parser.add_argument(
+    '-A',
+    '--append',
+    action='store_true',
+    dest='append',
     help=(
-        "Append mode: if the output changelog file already exists, append "
-        "generated changelog lines at the beginning of the file (optional, "
-        "default: overwriting the file)"
-    ),
+        'Append mode: if the output changelog file already exists, append '
+        'generated changelog lines at the begining of the file (optional, '
+        'default: overwriting the file)'
+    )
 )
 
-parser.add_argument("-n", "--package-name", type=str, dest="package_name", help="Package name")
-
 parser.add_argument(
-    "-V",
-    "--version",
+    '-n',
+    '--package-name',
     type=str,
-    dest="version",
-    help=("Current version (default: autodetected using git describe " "--always --tags)"),
+    dest='package_name',
+    help='Package name'
 )
 
 parser.add_argument(
-    "--version-suffix", type=str, dest="version_suffix", help="Suffix for autodetected version"
-)
-
-parser.add_argument(
-    "-c",
-    "--code-name",
+    '-V',
+    '--version',
     type=str,
-    dest="code_name",
-    help="Debian code name (default: %s)" % DEFAULT_CODE_NAME,
-    default=DEFAULT_CODE_NAME,
-)
-
-parser.add_argument(
-    "-u",
-    "--urgency",
-    type=str,
-    dest="urgency",
-    help="Package urgency (default: %s)" % DEFAULT_URGENCY,
-    default=DEFAULT_URGENCY,
-)
-
-parser.add_argument(
-    "-N",
-    "--maintainer-name",
-    type=str,
-    dest="maintainer_name",
-    help="Maintainer name (default: last commit author name)",
-)
-
-parser.add_argument(
-    "-E",
-    "--maintainer-email",
-    type=str,
-    dest="maintainer_email",
-    help="Maintainer email (default: last commit author email)",
-)
-
-parser.add_argument(
-    "-R",
-    "--release-notes",
-    type=str,
-    dest="release_notes",
-    help="Specify an optional Markdown release notes output path",
-)
-
-parser.add_argument(
-    "--revision",
-    type=str,
-    dest="revision",
+    dest='version',
     help=(
-        "Specify the revision to use to generate the changelog (see "
-        "git-rev-parse for viable options, optional, default: generate the "
-        "changelog with all commits of the current branch) "
-    ),
-    default=None,
+        'Currrent version (default: autodetected using git describe '
+        '--always --tags)')
 )
 
 parser.add_argument(
-    "-C",
-    "--clean-tags-regex",
-    action="append",
+    '--version-suffix',
+    type=str,
+    dest='version_suffix',
+    help='Suffix for autodetected version'
+)
+
+parser.add_argument(
+    '-c',
+    '--code-name',
+    type=str,
+    dest='code_name',
+    help='Debian code name (default: %s)' % DEFAULT_CODE_NAME,
+    default=DEFAULT_CODE_NAME
+)
+
+parser.add_argument(
+    '-u',
+    '--urgency',
+    type=str,
+    dest='urgency',
+    help='Package urgency (default: %s)' % DEFAULT_URGENCY,
+    default=DEFAULT_URGENCY
+)
+
+parser.add_argument(
+    '-N',
+    '--maintainer-name',
+    type=str,
+    dest='maintainer_name',
+    help='Maintainer name (default: last commit author name)'
+)
+
+parser.add_argument(
+    '-E',
+    '--maintainer-email',
+    type=str,
+    dest='maintainer_email',
+    help='Maintainer email (default: last commit author email)'
+)
+
+parser.add_argument(
+    '-R',
+    '--release-notes',
+    type=str,
+    dest='release_notes',
+    help='Specify an optional Markdown release notes output path'
+)
+
+parser.add_argument(
+    '--revision',
+    type=str,
+    dest='revision',
+    help=(
+        'Specify the revision to use to generate the changelog (see '
+        'git-rev-parse for viable options, optional, default: generate the '
+        'changelog with all commits of the current branch) '
+    ),
+    default=None
+)
+
+parser.add_argument(
+    '-C', '--clean-tags-regex',
+    action='append',
     type=re.compile,
-    dest="clean_tags_regex",
+    dest='clean_tags_regex',
     help=(
-        "Clean tags regex: you could specify regex to clean tag names when "
+        'Clean tags regex: you could specify regex to clean tag names when '
         'computing package versions. For instance, to drop a "-eeXXX" suffix '
         'of tag names, specify -C "\\-ee[0-9]{3}$" (optional, multiple regex '
-        "allowed)"
+        'allowed)'
     ),
-    default=[],
+    default=[]
 )
 
 parser.add_argument(
-    "-x",
-    "--exclude",
-    action="append",
+    '-x', '--exclude',
+    action='append',
     type=re.compile,
-    dest="exclude",
+    dest='exclude',
     help=(
-        "Commit exclusion regex: you could specify regex to exclude some "
-        "commits from generated changelog entries. For instance, to exclude "
+        'Commit exclusion regex: you could specify regex to exclude some '
+        'commits from generated changelog entries. For instance, to exclude '
         'commits with message starting with "CI: ", specify -x "^CI: " '
-        "(optional, multiple regex allowed)"
+        '(optional, multiple regex allowed)'
     ),
-    default=[],
+    default=[]
 )
 
 options = parser.parse_args()
 
 if not options.package_name:
-    parser.error("You must provide package name using -n/--package-name parameter")
+    parser.error(
+        'You must provide package name using -n/--package-name parameter')
 
 # Initialize log
 log = logging.getLogger()
 logformat = logging.Formatter(
-    f"%(asctime)s - {os.path.basename(sys.argv[0])} - %(levelname)s : %(message)s"
+    '%(asctime)s - {} - %(levelname)s : %(message)s'.format(
+        os.path.basename(sys.argv[0])
+    )
 )
 # Set root logger to DEBUG (filtering done by handlers)
 log.setLevel(logging.DEBUG)
@@ -201,51 +231,51 @@ repo = git.Repo(options.git_path)
 
 def clean_deb_version(version_name):
     """ Clean debian version name """
-    version_name = re.sub("^[^0-9]*", "", version_name)
+    version_name = re.sub('^[^0-9]*', '', version_name)
     for clean_regex in options.clean_tags_regex:
-        version_name = clean_regex.sub("", version_name)
+        version_name = clean_regex.sub('', version_name)
     if options.version_suffix:
         version_name += options.version_suffix
     return version_name
 
 
 if not options.version:
-    log.info("Detect current version from git tags & commits")
-    options.version = clean_deb_version(repo.git.describe("--always", "--tags"))
-    log.info("Current version detected: %s", options.version)
+    log.info('Detect current version from git tags & commits')
+    options.version = clean_deb_version(
+        repo.git.describe('--always', '--tags')
+    )
+    log.info('Currrent version detected: %s', options.version)
 
 if options.output and options.append and not options.revision:
     log.info(
-        "Append mode enabled but no revision specify, try to detect it from "
-        "last modification of the changelog file"
-    )
+        'Append mode enabled but no revision specify, try to detect it from '
+        'last modification of the changelog file')
     try:
         last_change_commit = next(repo.iter_commits(paths=options.output))
         # pylint: disable=consider-using-f-string
-        options.revision = f"{last_change_commit}..HEAD"
+        options.revision = '{0}..HEAD'.format(last_change_commit)
         log.info(
             'Last change commit of the output file is "%s": use revision "%s"',
-            last_change_commit,
-            options.revision,
-        )
+            last_change_commit, options.revision)
     except StopIteration:
         log.warning(
-            "Fail to auto-detect last change commit of changelog file: it "
-            "seem not tracked. Continue without revision."
-        )
+            'Fail to auto-detect last change commit of changelog file: it '
+            'seem not tracked. Continue without revision.')
     except GitCommandError:
         log.warning(
             "Fail to auto-detect last change commit of changelog file. May "
             "be it's outside of the git repository. Continue without "
-            "revision."
-        )
+            "revision.")
         # Reset repo object of to avoid BrokenPipeError
         repo = git.Repo(options.git_path)
 
-log.info("Generate changelog from git commits")
+log.info('Generate changelog from git commits')
 
 versions = []
-tag_commits = {tag.commit.binsha: tag for tag in repo.tags}
+tag_commits = dict(
+    (tag.commit.binsha, tag)
+    for tag in repo.tags
+)
 
 
 def add_version():
@@ -254,9 +284,14 @@ def add_version():
     if not version_commit:
         return
     if not messages:
-        messages = [f"Release version {version}"]
-    log.info("Add version %s:\n  - %s", version, "\n  - ".join(messages))
-    versions.append({"name": version, "tag": tag, "commit": version_commit, "messages": messages})
+        messages = ['Release version {0}'.format(version)]
+    log.info('Add version %s:\n  - %s', version, '\n  - '.join(messages))
+    versions.append({
+        'name': version,
+        'tag': tag,
+        'commit': version_commit,
+        'messages': messages
+    })
 
 
 tag = None
@@ -264,10 +299,10 @@ version_commit = None
 version = options.version
 messages = []
 for commit in repo.iter_commits(rev=options.revision):
-    log.debug("Commit %s (%s)", commit, commit.summary)
+    log.debug('Commit %s (%s)', commit, commit.summary)
     if commit.binsha in tag_commits:
         new_tag = tag_commits[commit.binsha]
-        log.debug("Reach new tag %s", new_tag)
+        log.debug('Reach new tag %s', new_tag)
 
         add_version()
 
@@ -275,7 +310,7 @@ for commit in repo.iter_commits(rev=options.revision):
         version = clean_deb_version(tag.name)
         version_commit = commit
         messages = []
-        log.debug("Iter commits for version %s", version)
+        log.debug('Iter commits for version %s', version)
     if version_commit is None:
         version_commit = commit
     excluded = False
@@ -283,65 +318,76 @@ for commit in repo.iter_commits(rev=options.revision):
         if regex.search(commit.summary):
             excluded = True
             log.debug(
-                'Exclude commit %s ("%s", match with "%s")', commit, commit.summary, regex.pattern
-            )
+                'Exclude commit %s ("%s", match with "%s")',
+                commit, commit.summary, regex.pattern)
     if not excluded:
         messages.append(commit.summary)
 add_version()
-log.info("%d versions found", len(versions))
+log.info('%d versions found', len(versions))
 
 changelog_lines = []
 for version in versions:
     # pylint: disable=consider-using-f-string
     changelog_lines.append(
-        "{package} ({version}) {code_name}; urgency={urgency}\n\n".format(
+        '{package} ({version}) {code_name}; urgency={urgency}\n\n'.format(
             package=options.package_name,
-            version=version["name"],
+            version=version['name'],
             code_name=options.code_name,
-            urgency=options.urgency,
+            urgency=options.urgency
         )
     )
 
-    for message in version["messages"]:
-        for idx, line in enumerate(textwrap.wrap(message, 76, break_long_words=True)):
+    for message in version['messages']:
+        for idx, line in enumerate(
+            textwrap.wrap(message, 76, break_long_words=True)
+        ):
             # pylint: disable=consider-using-f-string
-            changelog_lines.append("{}{}\n".format("  * " if not idx else "    ", line))
+            changelog_lines.append(
+                '{0}{1}\n'.format(
+                    '  * ' if not idx else '    ',
+                    line
+                )
+            )
 
     # pylint: disable=consider-using-f-string
     changelog_lines.append(
         "\n -- {name} <{email}>  {date}\n\n".format(
             name=(
-                options.maintainer_name
-                if options.maintainer_name
-                else version["commit"].author.name
-            ),
+                options.maintainer_name if options.maintainer_name
+                else version['commit'].author.name),
             email=(
-                options.maintainer_email
-                if options.maintainer_email
-                else version["commit"].author.email
-            ),
-            date=version["commit"].committed_datetime.strftime("%a, %d %b %Y %H:%M:%S %z"),
+                options.maintainer_email if options.maintainer_email
+                else version['commit'].author.email),
+            date=version['commit'].committed_datetime.strftime(
+                "%a, %d %b %Y %H:%M:%S %z")
         )
     )
 
 if options.output:
-    log.info("Write generated Debian changelog in file %s", options.output)
+    log.info('Write generated Debian changelog in file %s', options.output)
     if options.append and os.path.exists(options.output):
-        with open(options.output, encoding="utf8") as fd:
+        with open(options.output, 'r', encoding='utf8') as fd:
             changelog_lines += [""]
             changelog_lines += fd.readlines()
-    with open(options.output, "w", encoding="utf8") as fd:
+    with open(options.output, 'w', encoding='utf8') as fd:
         fd.writelines(changelog_lines)
 else:
-    print("".join(changelog_lines))
+    print(''.join(changelog_lines))
 
 if options.release_notes:
-    log.info("Generate Markdown release notes")
-    release_notes_lines = ["# Changelog:\n\n"]
+    log.info('Generate Markdown release notes')
+    release_notes_lines = ['# Changelog:\n\n']
     if versions:
-        release_notes_lines.extend([f"* {message}\n" for message in versions[0]["messages"]])
+        release_notes_lines.extend([
+            '* {0}\n'.format(message)
+            for message in versions[0]['messages']
+        ])
     else:
-        release_notes_lines.extend([f"* Release version {options.version}\n"])
-    log.info("Write generated Markdown release notes in file %s", options.release_notes)
-    with open(options.release_notes, "w", encoding="utf8") as fd:
+        release_notes_lines.extend([
+            '* Release version {0}\n'.format(options.version)
+        ])
+    log.info(
+        'Write generated Markdown release notes in file %s',
+        options.release_notes)
+    with open(options.release_notes, 'w', encoding='utf8') as fd:
         fd.writelines(release_notes_lines)