merge_pdfs_into_one.py

import PyPDF2 
from glob import glob
from pathlib import Path
from os import sys

try:
    ROOT = Path(sys.argv[0]).as_posix()
    TITLE = sys.argv[1]
except KeyError as ke:
    print(ke)
    
files = glob(ROOT + "**/*.pdf", recursive=True)

pdfWriter = PyPDF2.PdfFileWriter()
for file in files:
    pdf1Reader = PyPDF2.PdfFileReader(file)
    for pageNum in range(pdf1Reader.numPages):
        pageObj = pdf1Reader.getPage(pageNum)
        pdfWriter.addPage(pageObj)

pdfOutputFile = open(f"{TITLE}.pdf", 'wb')
pdfWriter.write(pdfOutputFile)