For Loop, over even index

[shaynehansen]

I've created a code to combine pages of a pdf. The code will combine every two pages together. The issue is when the index is odd, it will not display the last page.

Any tips on how to fix this?

from PyPDF2 import PdfFileReader, PdfFileWriter

output = PdfFileWriter()

file_name = 'test odd.pdf' # ----> Change this to your file you want to combine.
file = PdfFileReader(open(file_name, 'rb'))


for i in range(1, file.getNumPages(), 2):
    page = file.getPage(i-1)
    height = page.mediaBox.getUpperRight_y()
    page_step = file.getPage(i)
    page.mergeTranslatedPage(page_step, 0, -height, expand=True)
    output.addPage(page)


outfile = 'testing odd.pdf' # ----> Change this to the name you want for the outfile.

with open(outfile, 'wb') as file:
    output.write(file)