Python et pdf
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Il eexiste une librairie permettant de manipuler des fichiers pdf

pypdf: http://pybrary.net/pyPdf/
version de python testé: python 27

permet de créer et de manipuler des fichiers pdf


.. code-block:: python

    from pyPdf import PdfFileWriter, PdfFileReader
    
    output = PdfFileWriter()
    input1 = PdfFileReader(file("document1.pdf", "rb"))
    
    # print the title of document1.pdf
    print "title = %s" % (input1.getDocumentInfo().title)
    
    # add page 1 from input1 to output document, unchanged
    output.addPage(input1.getPage(0))
    
    # add page 2 from input1, but rotated clockwise 90 degrees
    output.addPage(input1.getPage(1).rotateClockwise(90))
    
    # add page 3 from input1, rotated the other way:
    output.addPage(input1.getPage(2).rotateCounterClockwise(90))
    # alt: output.addPage(input1.getPage(2).rotateClockwise(270))
    
    # add page 4 from input1, but first add a watermark from another pdf:
    page4 = input1.getPage(3)
    watermark = PdfFileReader(file("watermark.pdf", "rb"))
    page4.mergePage(watermark.getPage(0))
    
    # add page 5 from input1, but crop it to half size:
    page5 = input1.getPage(4)
    page5.mediaBox.upperRight = (
        page5.mediaBox.getUpperRight_x() / 2,
        page5.mediaBox.getUpperRight_y() / 2
    )
    output.addPage(page5)
    
    # print how many pages input1 has:
    print "document1.pdf has %s pages." % input1.getNumPages()
    
    # finally, write "output" to document-output.pdf
    outputStream = file("document-output.pdf", "wb")
    output.write(outputStream)
    outputStream.close()
    



Cette librairie permet de manipuler les pdf a volonter (fusion, découpage, rotation) mais aussi par exemple
extraction des commentaires (on a accès aux objets que contient le pdf)


.. code-block:: python

    import pyPdf
    
    def extract(path):
        pdf = pyPdf.PdfFileReader(file(path,"rb")) 
        list(pdf.pages) # Process all the objects. 
        objs = pdf.resolvedObjects
    
        for i in range(0,pdf.getNumPages()):
            pg = pdf.getPage(i)
            if pg.has_key('/Annots'):
                for note in pg['/Annots']:
                    if objs[0][note.idnum].has_key('/Contents'):
                        print("Page %i : %s" % (i, objs[0][note.idnum]['/Contents']))
    
    extract('file.pdf')