How to merge multiple PDFs using Python

Here's a step-by-step example of how to merge multiple PDFs using PyMuPDF (fitz) in Python:

Install the fitz library:

Copy code

pip install PyMuPDF

Import the fitz library in your Python script:

python

Copy code

import fitz

Create a new fitz PDF object to store the merged PDF:

python

Copy code

merger = fitz.open()

Loop through the list of PDFs you want to merge:

sql

Copy code

pdf_list = ['file1.pdf', 'file2.pdf', 'file3.pdf']

for pdf in pdf_list:

    # Open each PDF

    doc = fitz.open(pdf)

    # Insert the contents of each PDF into the merger

    merger.insert_pdf(doc)

    # Close the PDF

    doc.close()

Save the merged PDF to a file:

python

Copy code

merger.save("output.pdf")

The complete code would look like this:

python

Copy code

import fitz

def merge_pdfs(pdf_list, output):

    # Create a PDF object to write the merged PDF to

    merger = fitz.open()

    # Loop through all PDFs in the list

    for pdf in pdf_list:

        # Open the PDF

        doc = fitz.open(pdf)

        # Read the PDF into the merger

        merger.insert_pdf(doc)

        # Close the PDF

        doc.close()

    # Write the merged PDF to the output file

    merger.save(output)

# Example usage

pdf_list = ['file1.pdf', 'file2.pdf', 'file3.pdf']

merge_pdfs(pdf_list, 'output.pdf')

This code will take a list of PDF filenames as input, merge them into a single PDF, and write the result to the specified output file.