Python: simulate writing to a file object without creating a file

Question

I\'m working with Python3 and I want to simulate writing to a file, but without actually creating a file.

For example, my specific case is as follows:

Answer 1

Since the PdfFileMerger.write method supports writing to file-like objects, you can simply make the PdfFileMerger object write to a BytesIO object instead:

from io import BytesIO

merger = PdfFileMerger()

for pdf in files_to_merge:
    merger.append(pdf)

output = BytesIO()
merger.write(output)
merger.close()

file_content = output.getvalue()