pythonnet-wrapper

Python.NET Wrapper Sample

Creates a Word document from Python and converts it to PDF by loading the Syncfusion-powered .NET assembly directly inside the Python process using pythonnet.

Layout

pythonnet-wrapper/
  document_sdk.py        # Python client (uses pythonnet/clr) — exposes DocumentService
  requirements.txt       # pythonnet>=3.1.0
  NuGet.Config
  DocumentBridge/
    DocumentBridge.csproj    # .NET 8 class library
    DocumentCreator.cs   # DocIO/XlsIO/Presentation/Pdf logic, called directly from Python
  samples/               # Runnable end-to-end examples
    README.md
    01_hello_world.py
    02_batch_invoices.py
    03_custom_output_paths.py
    04_excel_to_pdf.py
    05_powerpoint_to_pdf.py
    06_watermark_pdf.py

Run

dotnet publish DocumentBridge/DocumentBridge.csproj -c Release -r win-x64 --self-contained false -o artifacts

python -m venv .venv
.venv\Scripts\Activate.ps1   # On Linux/macOS: source .venv/bin/activate
pip install -r requirements.txt

# Build a Word document and save it as DOCX, then render it straight to PDF.
python document_sdk.py create-docx
python document_sdk.py create-pdf

# Convert an existing workbook / presentation to PDF, or watermark a PDF.
python document_sdk.py excel-to-pdf      --input documents/input.xlsx  --output output/workbook.pdf
python document_sdk.py powerpoint-to-pdf --input documents/input.pptx  --output output/slides.pdf
python document_sdk.py watermark-pdf     --input output/workbook.pdf   --output output/watermarked.pdf --label CONFIDENTIAL

Replace win-x64 with the RID that matches your platform (osx-arm64, osx-x64, or linux-x64). When cross-publishing from Windows, pick the RID that matches the target machine, not the host.

Every command runs in Syncfusion's trial mode by default — no license is required, and evaluation watermarks are added to the output documents. To produce watermark-free output, set the SYNCFUSION_LICENSE_KEY environment variable before running the command:

# Windows PowerShell
$env:SYNCFUSION_LICENSE_KEY = "your-key"
# bash / zsh
SYNCFUSION_LICENSE_KEY=your-key python document_sdk.py create-pdf

The C# worker reads the variable on first use; Python callers do not need to pass any flag per call.

Samples

See samples/README.md for a small set of runnable scripts that build on document_sdk.load_service():

#	Sample	Demonstrates
1	01_hello_world.py	Minimal end-to-end DOCX + PDF generation.
2	02_batch_invoices.py	Loop over records and emit one DOCX each.
3	03_custom_output_paths.py	Custom output folder and non-default bundle path.
4	04_excel_to_pdf.py	Convert an XLSX workbook to PDF.
5	05_powerpoint_to_pdf.py	Convert a PPTX presentation to PDF.
6	06_watermark_pdf.py	Overlay a diagonal text watermark on every page of a PDF.