fonts.py

from weasyprint import CSS
from weasyprint.text.fonts import FontConfiguration

def css_for_extra_fonts():
    font_config = FontConfiguration()
    return CSS(string='''
        @font-face {
            font-family: 'BC Sans Regular';
            src: local('BCSans-Regular');
        }
        @font-face {
            font-family: 'BC Sans Bold';
            src: local('BCSans-Bold');
        }
        @font-face {
            font-family: 'BC Sans Light';
            src: local('BCSans-Light');
        }
        @font-face {
            font-family: 'BC Sans Bold Italic';
            src: local('BCSans-BoldItalic');
        }
        @font-face {
            font-family: 'BC Sans Italic';
            src: local('BCSans-Italic');
        }
        @font-face {
            font-family: 'BC Sans Light Italic';
            src: local('BCSans-LightItalic');
        }
        @font-face {
            font-family: 'Noto Sans Light';
            src: local('NotoSans-Light');
        }
        @font-face {
            font-family: 'Noto Sans Light Italic';
            src: local('NotoSans-LightItalic');
        }
        ''', font_config=font_config), font_config