How can I resolve the error "Undefined font: dejavusanscondensedB" in Python's pyfpdf library? Should I use built-in fonts or add the font using FPDF.add_font() function beforehand?

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You have two options:

1. Use built-in fonts: Replace the font name "dejavusanscondensedB" with one of the built-in fonts in pyfpdf. You can choose from the following fonts: Courier, Helvetica, Times, Symbol, ZapfDingbats.

2. Add the font using FPDF.addfont() function beforehand: If you want to use the specific font "dejavusanscondensedB", you need to add it to pyfpdf using the FPDF.addfont() function.

Here is an example of how to add a font using the FPDF.add_font() function:

from fpdf import FPDF

class MyPDF(FPDF):
    def __init__(self):
        super().__init__()
        self.add_font('DejaVuSansCondensed', '', 'DejaVuSansCondensed.ttf', uni=True)

    def create_pdf(self):
        self.add_page()
        self.set_font('DejaVuSansCondensed', '', 12)
        self.cell(0, 10, 'Hello World')
        self.output('output.pdf')

MyPDF().create_pdf()

Make sure to replace the font name, file name, and font size with your own values.