Mastering Django: Core

Complex PDF's

If you're creating a complex PDF document with ReportLab, consider using the io library as a temporary holding place for your PDF file. This library provides a file-like object interface that is particularly efficient. Here's the above Hello World example re-written to use io:

from io import BytesIO from reportlab.pdfgen import canvas from django.http import HttpResponse def some_view(request): # Create the HttpResponse object with the appropriate PDF headers. response = HttpResponse(content_type='application/pdf') response['Content-Disposition'] = 'attachment; filename="somefilename.pdf"' buffer = BytesIO() # Create the PDF object, using the BytesIO object as its "file." p = canvas.Canvas(buffer) # Draw things on the PDF. Here's ...