Easy? mistake in python syntax (If-Statement)

Question

I am losing my mind.

This code is giving me a syntax error complaining about the second if statement. Shouldn't everything be working? I fail to see the mistake, I tried adding an else statement but that just makes that the syntax error..

Help highly appreciated!

inputpdf = PyPDF2.PdfFileReader("testfolder\\merge.pdf")

for i in range(inputpdf.numPages):
    num = range(inputpdf.numPages)[-1]
    if (num % 2) != 0:
        print(i)
        output = PyPDF2.PdfFileWriter()
        output.addPage(inputpfd.getPage(range(num))
    if (i % 2) == 0:
        output = PyPDF2.PdfFileWriter()
        output.addPage(inputpdf.getPage(i))
        output.addPage(inputpdf.getPage(i+1))
        with open("document-page%s.pdf" % i, "wb") as outputStream:
            output.write(outputStream)

FWIW: Python 3.10 will issue a much more useful warning in this case (SyntaxError: '(' was never closed), which should make it easier to catch typos like this in the future. — nneonneo
– nneonneo, Commented Jan 27, 2022 at 8:11

navylover · Accepted Answer · 2022-01-27 07:48:52Z

2

Replace

output.addPage(inputpfd.getPage(range(num)) //no enclosing brace.

with

output.addPage(inputpfd.getPage(range(num)))

answered Jan 27, 2022 at 7:48

navylover

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Comments

Tal Folkman · Accepted Answer · 2022-01-27 08:24:50Z

2

you missed one enclosing brace ):

import PyPDF2

inputpdf = PyPDF2.PdfFileReader("testfolder\\merge.pdf")

for i in range(inputpdf.numPages):
    num = range(inputpdf.numPages)[-1]
    if (num % 2) != 0:
        print(i)
        output = PyPDF2.PdfFileWriter()
        output.addPage(inputpdf.getPage(range(num)))
    if (i % 2) == 0:
        output = PyPDF2.PdfFileWriter()
        output.addPage(inputpdf.getPage(i))
        output.addPage(inputpdf.getPage(i+1))
        with open("document-page%s.pdf" % i, "wb") as outputStream:
            output.write(outputStream)

edited Jan 27, 2022 at 8:24

answered Jan 27, 2022 at 7:43

Tal Folkman

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