merge many pdf files in a folder, python code example

Example 1: python merge pdfs

from PyPDF2 import PdfFileMerger, PdfFileReader
merger = PdfFileMerger()

merger.append(PdfFileReader(open(filename1, 'rb')))
merger.append(PdfFileReader(open(filename2, 'rb')))

merger.write("merged.pdf")

Example 2: python merge pdf files into one

from PyPDF2 import PdfFileMerger, PdfFileReader
 
# Call the PdfFileMerger
mergedObject = PdfFileMerger()
 
# I had 116 files in the folder that had to be merged into a single document
# Loop through all of them and append their pages
for fileNumber in range(1, 117):
    mergedObject.append(PdfFileReader('6_yuddhakanda_' + str(fileNumber)+ '.pdf', 'rb'))
 
# Write all the files into a file which is named as shown below
mergedObject.write("mergedfilesoutput.pdf")