pdf_merge.py

from PyPDF2 import PdfFileMerger
import os

# Create an instance of PdfFileMerger() class
merger = PdfFileMerger()

# Define the path to the folder with the PDF files
path_to_files = "."

# Get the file names in the directory
for root, dirs, file_names in os.walk(path_to_files):
    # Iterate over the list of the file names
    for file_name in file_names:
        # Append PDF files
        merger.append(path_to_files + file_name)

# Write out the merged PDF file
merger.write("merged_all_pages.pdf")
merger.close()