merge all pdf files in a folder https://stackoverflow.com/a/47356404

gistfile1.txt

pip install PyPDF2

gistfile2.txt

import os
from PyPDF2 import PdfMerger

x = [a for a in os.listdir() if a.endswith(".pdf")]

merger = PdfMerger()

for pdf in x:
    merger.append(open(pdf, 'rb'))

with open("result.pdf", "wb") as fout:
    merger.write(fout)