KeyError when trying to use installed font?

[Rapid1898-code]

Hello - i installed a new font and try to use it with PyPDF2 with this line:
pdf.setFont("Playfair Display", 10)

But even tough the font is installed and can be seen under windows/fonts

I get this error when running the program:

$ python workPDF.py
Working for Peter Schmidt, Musterstraße 1, 50767 Köln
Traceback (most recent call last):
  File "G:\DEV\.venv\pdf\lib\site-packages\reportlab\pdfbase\pdfmetrics.py", line 697, in getFont
    return _fonts[fontName]
KeyError: 'Playfair Display'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "G:\DEV\Fiverr\TRY\kalleinc\workPDF.py", line 54, in <module>
    pdf.setFont("Playfair Display", 10)
  File "G:\DEV\.venv\pdf\lib\site-packages\reportlab\pdfgen\canvas.py", line 1726, in setFont
    font = pdfmetrics.getFont(self._fontname)
  File "G:\DEV\.venv\pdf\lib\site-packages\reportlab\pdfbase\pdfmetrics.py", line 699, in getFont
    return findFontAndRegister(fontName)
  File "G:\DEV\.venv\pdf\lib\site-packages\reportlab\pdfbase\pdfmetrics.py", line 681, in findFontAndRegister
    face = getTypeFace(fontName)
  File "G:\DEV\.venv\pdf\lib\site-packages\reportlab\pdfbase\pdfmetrics.py", line 638, in getTypeFace
    return _typefaces[faceName]
KeyError: 'Playfair Display'

Why is this new font not working?

[pubpub-zz]

PyPDF2 is obsolete please upgrade to pypdf latest version
Also please provide a sample test code and possible pdf file showing your issue

[Rapid1898-code]

thanks - what is the latest version?
so instead of
from PyPDF2 import PdfReader, PdfWriter
i should simply use
from pypdf import PdfReader, PdfWriter

Correct?

[pubpub-zz]

correct but do not you have to uninstall PyPDF2 with pip and then install pypdf

[Rapid1898-code]

Hello - i have exactly the same errror-message also using pypdf

When i run the program with this statement
pdf.setFont("Helvetica", 15)
i have no problem - but trying to run instead with
pdf.setFont("Playfair Display", 10)
i get the error message

Font is installed as you can see in the screenshot above.

[pubpub-zz]

pypdf does not have any setFont function. Also looking at the traces you've produce I see no traces dealing with pypdf but with reportlab.