Infra: Add Sponsor to the PEPs API

[Secrus]

Adds Sponsor information to the PEP details, targeted mostly for API access

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📚 Documentation preview 📚: https://pep-previews--4804.org.readthedocs.build/

[python-cla-bot]

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[johnslavik]

Thanks! Some thoughts.

[johnslavik]

Consider not creating an alias here, obeying the locality of behavior rule (LoB) and keeping separate classes slightly more self-contained. Consider using dataclasses.field(doc=...).

Suggested change

	_frozen_ordered = dataclasses.dataclass(order=True, frozen=True)
	@_frozen_ordered
	class _Participant:
	"""Represent PEP participant."""
	full_name: str # The participant's name.
	email: str # The participant's email address.
	@_frozen_ordered
	class _Author(_Participant):
	"""Represent PEP authors."""
	full_name: str # The author's name.
	email: str # The author's email address.
	@_frozen_ordered
	class _Sponsor(_Participant):
	"""Represent PEP sponsors."""
	@dataclasses.dataclass(order=True, frozen=True)
	class _Participant:
	"""Represent PEP participant."""
	full_name: str = dataclasses.field(doc="The participant's name.")
	email: str = dataclasses.field(doc="The participant's email address.")
	@dataclasses.dataclass(order=True, frozen=True)
	class _Author(_Participant):
	"""Represent PEP authors."""
	full_name: str = dataclasses.field(doc="The author's name.")
	email: str = dataclasses.field(doc="The author's email address.")
	@dataclasses.dataclass(order=True, frozen=True)
	class _Sponsor(_Participant):
	"""Represent PEP sponsors."""

[johnslavik]

Formatting nits

Suggested change

	def _parse_author(data: str) -> list[_Author]:
	"""Return a list of author names and emails."""
	return [_Author(author, email) for author, email in _parse_participants(data)]
	def _parse_sponsor(data: str) -> _Sponsor:
	"""Return sponsor name and email"""
	return _Sponsor(*_parse_participants(data)[0])
	def _parse_author(data: str) -> list[_Author]:
	"""Return a list of author names and emails."""
	return [_Author(author, email) for author, email in _parse_participants(data)]
	def _parse_sponsor(data: str) -> _Sponsor:
	"""Return sponsor name and email"""
	return _Sponsor(*_parse_participants(data)[0])