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import re
import textwrap
import git
from tlz.itertoolz import last, unique
co_author_re = re.compile(r"Co-authored-by: (?P<name>[^<]+?) <(?P<email>.+)>")
def main():
repo = git.Repo(".")
most_recent_release = last(list(repo.tags))
# extract information from commits
contributors = {}
for commit in repo.iter_commits(f"{most_recent_release.name}.."):
matches = co_author_re.findall(commit.message)
if matches:
contributors.update({email: name for name, email in matches})
contributors[commit.author.email] = commit.author.name
# deduplicate and ignore
# TODO: extract ignores from .github/release.yml
ignored = ["dependabot", "pre-commit-ci"]
unique_contributors = unique(
contributor
for contributor in contributors.values()
if contributor.removesuffix("[bot]") not in ignored
)
sorted_ = sorted(unique_contributors)
if len(sorted_) > 1:
names = f"{', '.join(sorted_[:-1])} and {sorted_[-1]}"
else:
names = "".join(sorted_)
statement = textwrap.dedent(
f"""\
Thanks to the {len(sorted_)} contributors to this release:
{names}
""".rstrip()
)
print(statement)
if __name__ == "__main__":
main()
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