python - PyPDF2, Set PDF version -

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i'm using pypdf2 1.4, , python 2.7:

how can change pdf version input file output file?

from pypdf2 import pdffilewriter, pdffilereader pypdf2.generic import nameobject, createstringobject  input_filename = 'my_input_filename.pdf'  # read input pdf file inputpdf = pdffilereader(open(input_filename, 'rb')) info = inputpdf.documentinfo  in xrange(inputpdf.numpages):     # create output pdf     outputpdf = pdffilewriter()     # create dictionary output pdf     infodict = outputpdf._info.getobject()     # update output pdf metadata input pdf metadata     key in info:         infodict.update({nameobject(key): createstringobject(info[key])})     outputpdf.addpage(inputpdf.getpage(i))  open(output_filename , 'wb') outputstream:     outputpdf.write(outputstream)

pypdf2 in current versions can't produce files pdf1.3 header; the official source code : class pdffilewriter(object):

    """     class supports writing pdf files out, given pages produced     class (typically :class:`pdffilereader<pdffilereader>`).     """     def __init__(self):         self._header = b_("%pdf-1.3")         ...

if legal, considering gives ability feed in >1.3 things, questionable.

if want fix version string in header (i don't know consequences have, assume know more pdf standard do!)

from pypdf2.utils import b_ ... outputpdf._header.replace(b_("pdf-1.3"),b_("pdf-1.5"))

or of like.


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