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pythonnewlinepdf-writer

PdfWriter Python how to update field with multiline text

I've been trying for hours to insert a multiline text into a PDF with Python but none of the potential solutions worked. I've looked at multiple libraries and other solutions but none of them were using PdfWriter or helped solve my problem Here are a few of my tries:

  • \n
  • \r
  • \t
  • unicode characters for tabs and returns
  • textwrap
  • \u0009 But none of them work. It produces the pdf with the correct text but it doesn't go to the new line.

The pdf can be found here

Here is my code:

from pypdf import PdfReader, PdfWriter


file_path = os.path.join(script_directory, 'folder/', 'sample.pdf')
reader = PdfReader(file_path)
page_0 = reader.pages[0]
writer = PdfWriter()
writer.add_page(page_0)
name = current_user.name
address = session['address']

writer.update_page_form_field_values(writer.pages[0], {"1": f'{name}\r\n{address}'})
with open(os.path.join(script_directory, 'folder/', 'sample_filled_out.pdf'), "wb") as output_stream:
   writer.write(output_stream)

Any help or guidance would be appreciated, thank you!

Solution

  • There's no straightforward way to have the library write multiline variables, so the better solution was to separate the two fields into unique fields with different id's and then individually access each like so:

    writer.update_page_form_field_values(writer.pages[0], {"1": name})
writer.update_page_form_field_values(writer.pages[0], {"2": address})

    Thanks for everyone who commented on the post trying to help.