quillmark 0.91.0

Python bindings for Quillmark - format-first Markdown rendering

Quillmark — Python bindings

Python bindings for Quillmark's format-first Markdown rendering engine.

Maintained by TTQ.

Installation

pip install quillmark

Quick Start

from quillmark import Quillmark, Quill, Document, OutputFormat

engine = Quillmark()                       # backend registry + render dispatcher
quill = Quill.from_path("path/to/quill")   # engine-free, validated config data

markdown = """~~~
$quill: my_quill
$kind: main
title: Hello World
~~~

# Hello
"""

parsed = Document.from_markdown(markdown)
result = engine.render(quill, parsed, OutputFormat.PDF)
result.artifacts[0].save("output.pdf")

API surface

The Python surface mirrors the @quillmark/wasm package. Names follow snake_case conventions; the underlying concepts (and shapes of return values) are the same.

Capability principle: a Quill is engine-free, validated config data — quill.metadata is a pure, infallible snapshot of the quill: section. Backend capability (supported_formats / supports_canvas) and rendering (render / open) are resolved by the engine, against a quill; they raise QuillmarkError (UnsupportedBackend) only if the declared backend isn't registered.

Quillmark

engine = Quillmark()
engine.registered_backends()              # ['typst']
engine.render(quill, parsed, OutputFormat.PDF)   # ppi=, pages=, producer= optional
engine.open(quill, parsed)                # RenderSession
engine.supported_formats(quill)           # [OutputFormat.PDF, ...] (raises if backend unregistered)
engine.supports_canvas(quill)             # True iff backend supports canvas preview (non-raising)

Quill

quill = Quill.from_path("path/to/quill")  # pure config load — no backend resolved here

quill.backend_id            # "typst" (declared backend)
quill.blueprint             # auto-generated annotated Markdown blueprint
quill.schema                # structured dict of the quill's document schema
quill.metadata              # pure config snapshot of the quill: section (never raises)
quill.quill_ref             # "name@version"

diags   = quill.validate(parsed)          # list of validation::* diagnostic dicts ([] = valid)
seed    = quill.seed_document()           # starter Document seeded from `example:` values
main    = quill.seed_main()               # just the $kind: main card (dict, like doc.main)
card    = quill.seed_card("note")         # one starter composable card (dict), None if kind undeclared

RenderSession

session = engine.open(quill, parsed)
session.page_count
session.backend_id
session.supports_canvas
session.warnings
session.render(OutputFormat.SVG, pages=[0])

RenderResult / Artifact

result.artifacts            # [Artifact, ...]
result.warnings             # [Diagnostic, ...]
result.format               # OutputFormat
result.render_time_ms       # float

artifact.format             # OutputFormat
artifact.bytes              # bytes
artifact.mime_type          # 'application/pdf', 'image/svg+xml', ...
artifact.save("out.pdf")

Document

doc = Document.from_markdown(markdown)
emitted = doc.to_markdown()

stored   = doc.to_json()
restored = Document.from_json(stored)
maybe    = Document.try_from_json(blob)          # None when not a DTO

Document.schema_version_of(blob)                 # raw tag (incl. unknown futures)
Document.current_schema_version()                # what this build writes

doc.clone()
doc.equals(other)
doc.card_count
doc.main; doc.cards; doc.body; doc.warnings

doc.set_field("title", "New")
doc.push_card(Document.make_card("note", {"x": 1}, "..."))  # or pass a Card from cards/remove_card/seed_card
# insert_card, remove_card, move_card, set_card_kind,
# update_card_field, remove_card_field, update_card_body, ...

Schema model

A field's cell is inferred from whether the schema declares a default::

• Unendorsed (no default:) — the blueprint renders <must-fill>. An absent Unendorsed field is a non-fatal signal (validation::field_absent) — the render path zero-fills it silently. A surviving <must-fill> sentinel is fatal (validation::must_fill_sentinel). Partial documents are first-class; engine.render(quill, doc) only raises for malformed input.
• Endorsed (with default:) — the blueprint renders the default value with a ; delete-ok annotation, and the default is used when the document omits the field.

There is no required: axis on FieldSchema.

Error contract

A single exception type — QuillmarkError — is raised for every failure mode. Every raised exception carries a non-empty .diagnostics list of Diagnostic objects. This matches the WASM binding's contract.

try:
    Document.from_markdown(bad_md)
except QuillmarkError as exc:
    for d in exc.diagnostics:
        print(d.severity, d.code, d.message, d.path)

EditError-shaped failures (invalid field names, kind names, out-of-range indices) prefix the message with [EditError::<Variant>] — the same format WASM uses — so callers can pattern-match on the message when they need to.

Changelog

See the changelog and the GitHub Releases page for release notes and version history.

Development

uv venv
uv pip install -e ".[dev]"
uv run pytest

License

Apache-2.0