How to use the pdf2image.exceptions.PDFPageCountError function in pdf2image

def test_pdfinfo_from_path_invalid(self):
        start_time = time.time()
        try:
            info = pdfinfo_from_path("./tests/test.jpg")
            raise Exception("This should not happen")
        except PDFPageCountError:
            pass
        print("test_pdfinfo_from_path_241: {} sec".format(time.time() - start_time))

int(value.strip())
                    if key in PDFINFO_CONVERT_TO_INT
                    else value.strip()
                )

        if "Pages" not in d:
            raise ValueError

        return d

    except OSError:
        raise PDFInfoNotInstalledError(
            "Unable to get page count. Is poppler installed and in PATH?"
        )
    except ValueError:
        raise PDFPageCountError(
            "Unable to get page count.\n%s" % err.decode("utf8", "ignore")
        )