Script for cropping pdf books

crop.py

from pyPdf import PdfFileWriter as pw, PdfFileReader as pr

# crop in_file
in_file = 'file.pdf'
out_file = 'file.crop.pdf'

out_pdf = pw()
in_pdf = pr(file(in_file, 'rb'))

for p in range(in_pdf.getNumPages()):
    page = in_pdf.getPage(p)
    # [0, 0, 612, 792]
    mb = page.mediaBox
    mb.setUpperRight((420, 540))
    mb.setLowerLeft((80, 20))

    out_pdf.addPage(page)

out_pdf.write(file(out_file, 'wb'))