aspose-note 26.2

Aspose.Note-compatible Python API for reading OneNote (.one) files

🗒️ Aspose.Note FOSS for Python

Quick links: 📚 Examples • 📦 PyPI

✅ Official Aspose project — 100% free & open-source. Provides an Aspose.Note-compatible Python API for working with OneNote .one files.

This repository provides a Python library with an Aspose.Note-shaped public API for reading Microsoft OneNote files (.one).

The goal is to offer a familiar surface (aspose.note.*) inspired by Aspose.Note for .NET, backed by this repository’s built-in MS-ONE/OneStore parser.

✨ Features

• ✅ Read .one from a file path or a binary stream
• ✅ Aspose-like DOM (Document/Page/Outline/…): traversal + type-based search
• ✅ Content extraction
  • ✅ Rich text with formatting runs (TextRun/TextStyle) and hyperlinks
  • ✅ Images (bytes, file name, dimensions)
  • ✅ Attached files (bytes, file name)
  • ✅ Tables (rows/cells + cell content)
  • ✅ OneNote tags (NoteTag) on text/images/tables/list elements
  • ✅ Numbered lists (NumberList) and indent levels
• ✅ PDF export via Document.Save(..., SaveFormat.Pdf) (uses ReportLab)

🚀 Quick start

from aspose.note import Document

doc = Document("testfiles/SimpleTable.one")
print(doc.DisplayName)
print(doc.Count())

# pages are direct children of Document
for page in doc:
    print(page.Title.TitleText.Text)

📄 Export to PDF

from aspose.note import Document, SaveFormat

doc = Document("testfiles/FormattedRichText.one")
doc.Save("out.pdf", SaveFormat.Pdf)

📦 Installation

From PyPI:

python -m pip install aspose-note

With PDF export support:

python -m pip install "aspose-note[pdf]"

From a local checkout:

python -m pip install -e .

PDF export requires ReportLab:

python -m pip install -e ".[pdf]"

PyPI release page (maintainers): https://pypi.org/manage/project/aspose-note/releases/

🧩 Public API (what is considered supported)

Only the aspose.note package is considered public and supported. Everything under aspose.note._internal is internal implementation detail and may change.

Below is a complete list of objects exported from aspose.note.__init__.

🧭 Document and traversal

• Document(source=None, load_options=None)

  • DisplayName: str | None
  • CreationTime: datetime | None
  • Count() -> int — number of pages (direct children of Document)
  • iteration: for page in doc: ...
  • FileFormat -> FileFormat (best-effort)
  • GetPageHistory(page) -> list[Page] (currently returns [page])
  • DetectLayoutChanges() (compatibility stub)
  • Save(target, format_or_options=None)
    • supported: SaveFormat.Pdf
    • other SaveFormat values currently raise UnsupportedSaveFormatException

• DocumentVisitor — base visitor for traversal:

  • VisitDocumentStart/End, VisitPageStart/End, VisitTitleStart/End, VisitOutlineStart/End, VisitOutlineElementStart/End, VisitRichTextStart/End, VisitImageStart/End

• Node

  • ParentNode
  • Document (property) — walk up to the root Document
  • Accept(visitor)

• CompositeNode(Node)

  • FirstChild, LastChild
  • AppendChildLast(node), AppendChildFirst(node), InsertChild(index, node), RemoveChild(node)
  • GetEnumerator() / iteration for child in node: ...
  • GetChildNodes(Type) -> list[Type] — recursive search by type

🏗️ Document structure

• Page(CompositeNode)

  • Title: Title | None
  • Author: str | None
  • CreationTime: datetime | None, LastModifiedTime: datetime | None
  • Level: int | None
  • Clone(deep=False) -> Page (minimal clone)

• Title(CompositeNode)

  • TitleText: RichText | None
  • TitleDate: RichText | None
  • TitleTime: RichText | None

• Outline(CompositeNode)

  • X, Y, Width (positioning)

• OutlineElement(CompositeNode)

  • IndentLevel: int
  • NumberList: NumberList | None
  • Tags: list[NoteTag]

📝 Content

• RichText(CompositeNode)

  • Text: str
  • Runs: list[TextRun] — formatted segments
  • FontSize: float | None
  • Tags: list[NoteTag]
  • Append(text, style=None) -> RichText
  • Replace(old_value, new_value) -> None

• TextRun(Node)

  • Text: str
  • Style: TextStyle
  • Start: int | None, End: int | None

• TextStyle(Node)

  • Bold/Italic/Underline/Strikethrough/Superscript/Subscript: bool
  • FontName: str | None, FontSize: float | None
  • FontColor: int | None, HighlightColor: int | None
  • LanguageId: int | None
  • IsHyperlink: bool, HyperlinkAddress: str | None

• Image(CompositeNode)

  • FileName: str | None, Bytes: bytes
  • Width: float | None, Height: float | None
  • AlternativeTextTitle: str | None, AlternativeTextDescription: str | None
  • HyperlinkUrl: str | None
  • Tags: list[NoteTag]
  • Replace(image) -> None — replace image contents

• AttachedFile(CompositeNode)

  • FileName: str | None, Bytes: bytes
  • Tags: list[NoteTag]

• Table(CompositeNode)

  • ColumnWidths: list[float]
  • BordersVisible: bool
  • Tags: list[NoteTag]

• TableRow(CompositeNode), TableCell(CompositeNode)

• NoteTag(Node)

  • fields: shape, label, text_color, highlight_color, created, completed
  • CreateYellowStar() — convenience factory

• NumberList(Node)

  • Format: str | None, Restart: int | None, IsNumbered: bool

⚙️ Load/save options

• LoadOptions

  • DocumentPassword: str | None (password/encryption is not supported)
  • LoadHistory: bool

• SaveOptions (base)

  • SaveFormat: SaveFormat

• PdfSaveOptions(SaveOptions) (subset)

  • PageIndex: int, PageCount: int | None
  • TagIconDir: str | None, TagIconSize: float | None, TagIconGap: float | None

• OneSaveOptions, HtmlSaveOptions, ImageSaveOptions — declared for API compatibility but not implemented.

🔢 Enums

• SaveFormat: One, Pdf, Html, plus raster formats (Jpeg, Png, Gif, Bmp, Tiff)
• FileFormat: OneNote2010, OneNoteOnline, OneNote2007
• HorizontalAlignment: Left, Center, Right
• NodeType: Document, Page, Outline, OutlineElement, RichText, Image, Table, AttachedFile

🚨 Exceptions

• AsposeNoteError (base)
• FileCorruptedException
• IncorrectDocumentStructureException
• IncorrectPasswordException
• UnsupportedFileFormatException (has a FileFormat field)
• UnsupportedSaveFormatException

📚 MS OneNote Examples

More runnable scripts are available in examples/ (MS OneNote .one samples).

📝 Extract all text from an MS OneNote document

from aspose.note import Document, RichText

doc = Document("testfiles/FormattedRichText.one")
texts = [rt.Text for rt in doc.GetChildNodes(RichText)]
print("\n".join(texts))

🖼️ Save all images from an MS OneNote document to disk

from aspose.note import Document, Image

doc = Document("testfiles/3ImagesWithDifferentAlignment.one")
for i, img in enumerate(doc.GetChildNodes(Image), start=1):
    name = img.FileName or f"image_{i}.bin"
    with open(name, "wb") as f:
        f.write(img.Bytes)

🏷️📄 Export an MS OneNote document to PDF (custom tag icons)

from aspose.note import Document, PdfSaveOptions, SaveFormat

doc = Document("testfiles/TagSizes.one")
opts = PdfSaveOptions(
    SaveFormat=SaveFormat.Pdf,
    TagIconDir="./tag-icons",
    TagIconSize=10,
    TagIconGap=2,
)
doc.Save("out.pdf", opts)

📦 Load an MS OneNote document from a binary stream

from pathlib import Path
from aspose.note import Document

one_path = Path("testfiles/SimpleTable.one")
with one_path.open("rb") as f:
  doc = Document(f)

print(doc.DisplayName)
print(doc.Count())

🧭 Traverse MS OneNote document structure (DOM) and print a simple outline

from aspose.note import Document, Page, Outline, OutlineElement, RichText

doc = Document("testfiles/SimpleTable.one")

for page in doc.GetChildNodes(Page):
  title = page.Title.TitleText.Text if page.Title and page.Title.TitleText else "(no title)"
  print(f"# {title}")

  for outline in page.GetChildNodes(Outline):
    for oe in outline.GetChildNodes(OutlineElement):
      # OutlineElement may contain RichText, Table, Image, etc.
      texts = [rt.Text for rt in oe.GetChildNodes(RichText)]
      if texts:
        print("-", " ".join(t.strip() for t in texts if t.strip()))

🔎 Count MS OneNote DOM nodes with DocumentVisitor

from aspose.note import Document, DocumentVisitor, Page, Image, RichText


class Counter(DocumentVisitor):
  def __init__(self) -> None:
    self.pages = 0
    self.rich_texts = 0
    self.images = 0

  def VisitPageStart(self, page: Page) -> None:  # noqa: N802
    self.pages += 1

  def VisitRichTextStart(self, rich_text: RichText) -> None:  # noqa: N802
    self.rich_texts += 1

  def VisitImageStart(self, image: Image) -> None:  # noqa: N802
    self.images += 1


doc = Document("testfiles/3ImagesWithDifferentAlignment.one")
counter = Counter()
doc.Accept(counter)
print(counter.pages, counter.rich_texts, counter.images)

🔗 Extract hyperlinks from formatted text in an MS OneNote document

from aspose.note import Document, RichText

doc = Document("testfiles/FormattedRichText.one")
for rt in doc.GetChildNodes(RichText):
  for run in rt.Runs:
    if run.Style.IsHyperlink and run.Style.HyperlinkAddress:
      print(run.Text, "->", run.Style.HyperlinkAddress)

🏷️ Inspect MS OneNote tags (NoteTag) across the document

from aspose.note import Document, RichText, Image, Table

doc = Document("testfiles/TagSizes.one")

def dump_tags(kind: str, tags) -> None:
  for t in tags:
    print(kind, "tag:", t.label)

for rt in doc.GetChildNodes(RichText):
  dump_tags("RichText", rt.Tags)

for img in doc.GetChildNodes(Image):
  dump_tags("Image", img.Tags)

for tbl in doc.GetChildNodes(Table):
  dump_tags("Table", tbl.Tags)

🧱 Work with tables in an MS OneNote document (rows/cells)

from aspose.note import Document, Table, TableRow, TableCell, RichText

doc = Document("testfiles/SimpleTable.one")

for table in doc.GetChildNodes(Table):
  print("Table columns:", table.ColumnWidths)
  for row_index, row in enumerate(table.GetChildNodes(TableRow), start=1):
    cells = row.GetChildNodes(TableCell)
    values: list[str] = []
    for cell in cells:
      cell_text = " ".join(rt.Text for rt in cell.GetChildNodes(RichText)).strip()
      values.append(cell_text)
    print(f"Row {row_index}:", values)

📎 Extract attached files from an MS OneNote document

from aspose.note import Document, AttachedFile

doc = Document("testfiles/OnePageWithFile.one")

for i, af in enumerate(doc.GetChildNodes(AttachedFile), start=1):
  name = af.FileName or f"attachment_{i}.bin"
  with open(name, "wb") as f:
    f.write(af.Bytes)
  print("saved:", name)

🔢 Inspect numbered lists in an MS OneNote document (NumberList + indentation)

from aspose.note import Document, OutlineElement

doc = Document("testfiles/NumberedListWithTags.one")

for oe in doc.GetChildNodes(OutlineElement):
  nl = oe.NumberList
  if nl is None:
    continue
  print(
    "indent=", oe.IndentLevel,
    "is_numbered=", nl.IsNumbered,
    "format=", nl.Format,
    "restart=", nl.Restart,
  )

⚠️ Current limitations

• The implementation focuses on reading .one and building a DOM; writing back to .one is not implemented.
• DocumentPassword / encrypted documents are not supported (raises IncorrectPasswordException).
• Saving formats other than PDF (HTML/images/ONE) are declared for compatibility but not implemented.

🌐 Other platforms (official Aspose.Note)

If you need the full-featured Aspose product (writing/conversion, broader compatibility, etc.), see the official libraries:

• Aspose.Note for .NET

  • Product: https://products.aspose.com/note/net/
  • Documentation: https://docs.aspose.com/note/net/

• Aspose.Note for Java

  • Product: https://products.aspose.com/note/java/
  • Documentation: https://docs.aspose.com/note/java/

🛠️ Development

Run tests:

python -m pip install -e ".[pdf]"
python -m unittest discover -s tests -p "test_*.py" -v

Third-party license notices (e.g., ReportLab used for PDF export) are in THIRD_PARTY_NOTICES.md.