pdfmerge.py

#!/usr/bin/env python3
import sys
import PyPDF2

if __name__ == "__main__":
    pdfWriter = PyPDF2.PdfFileWriter()
    for filename in sys.argv[1:]:
        with open(filename, "rb") as pdfFileObj:
            print(filename)
            pdfReader = PyPDF2.PdfFileReader(pdfFileObj)
            for page in pdfReader.pages:
                pdfWriter.addPage(page)
    with open("output.pdf", "wb") as pdfOutput:
        pdfWriter.write(pdfOutput)