ChatGPT generated Python script to merge PDFs using the GNU GPL v3 licensed PDF-handling library PyMuPDF. Install it using the command before running the script - pip install pymupdf

PDFMerge.py

import fitz  # PyMuPDF is also known as fitz

# List of PDFs to merge
pdf_files = ['file1.pdf', 'file2.pdf', 'file3.pdf']

# Create a new empty PDF
output_pdf = fitz.open()

# Loop through each file and insert pages
for file in pdf_files:
    with fitz.open(file) as pdf:
        output_pdf.insert_pdf(pdf)

# Save the merged result
output_pdf.save("merged_pymupdf.pdf")
output_pdf.close()