python pdf merge
# pdf_merging.py
from PyPDF2 import PdfFileReader, PdfFileWriter
def merge_pdfs(paths, output):
    pdf_writer = PdfFileWriter()
    for path in paths:
        pdf_reader = PdfFileReader(path)
        for page in range(pdf_reader.getNumPages()):
            # Add each page to the writer object
            pdf_writer.addPage(pdf_reader.getPage(page))
    # Write out the merged PDF
    with open(output, 'wb') as out:
        pdf_writer.write(out)
if __name__ == '__main__':
    paths = ['document1.pdf', 'document2.pdf']
    merge_pdfs(paths, output='merged.pdf')