Method _get_subsetted_psname

lib/matplotlib/backends/backend_pdf.py:817–818

(ps_name, charmap)

    @staticmethod
    def _get_subsetted_psname(ps_name, charmap):
        return PdfFile._get_subset_prefix(frozenset(charmap.values())) + ps_name

    def finalize(self):
        """Write out the various deferred objects and the pdf end matter."""