pagelabels python library

This is a little library, based on pdfrw, that helps manipulate PDF page labels in python. It can parse page labels from a PDF, edit page labels, and write them in a PDF.

For more info about page labels, see: https://www.w3.org/TR/WCAG20-TECHS/PDF17.html

Classes

• PageLabels
• PageLabelScheme

PageLabels

Inherits from list and represents a list of PageLabelSchemes.

PageLabels.from_pdf(pdfrwobj)

Static method. Read page labels from a PdfReader object.

.write(pdfrwobj)

Write the page labels to a PdfReader object.

PageLabelScheme

Inherits from a named tuple with fields:

• startpage : Index in the PDF where to start numbering pages according to this scheme
• style : one of the strings arabic, roman uppercase, letters uppercase, roman lowercase, letters lowercase
• prefix : string to prepend to all page labels
• firstpagenum : where to start the index

Example

from pdfrw import PdfReader, PdfWriter

from pagelabels import PageLabels, PageLabelScheme

reader = PdfReader("input.pdf")
labels = PageLabels.from_pdf(reader)
newlabel = PageLabelScheme(startpage=3, # the index of the page of the PDF where the labels will start
                           style="roman", # See options in PageLabelScheme.styles()
                           prefix="Appendix ",
                           firstpagenum=1) # number to attribute to the first page of this index
labels.append(newlabel) # Adding our page labels to the existing ones
labels.write(reader)
writer = PdfWriter()
writer.trailer = reader
writer.write("output.pdf")