Python小程序—多个PDF合成一个

import PyPDF2
filenames = [\'cover.pdf\', \'content1.pdf\', \'content2.pdf\', \'content3.pdf\']
merger = PyPDF2.PdfFileMerger()
for filename in filenames:
    merger.append(PyPDF2.PdfFileReader(filename))
merger.write(\'合并.pdf\')