How to use the xlrd.biffh.fprintf function in xlrd

def palette_epilogue(book):
    # Check colour indexes in fonts etc.
    # This must be done here as FONT records
    # come *before* the PALETTE record :-(
    for font in book.font_list:
        if font.font_index == 4: # the missing font record
            continue
        cx = font.colour_index
        if cx == 0x7fff: # system window text colour
            continue
        if cx in book.colour_map:
            book.colour_indexes_used[cx] = 1
        elif book.verbosity:
            print("Size of colour table:", len(book.colour_map), file=book.logfile)
            fprintf(book.logfile, "*** Font #%d (%r): colour index 0x%04x is unknown\n",
                font.font_index, font.name, cx)
    if book.verbosity >= 1:
        used = sorted(book.colour_indexes_used.keys())
        print("\nColour indexes used:\n%r\n" % used, file=book.logfile)

fmt = self.format_map[xf.format_key]
        cellty = _cellty_from_fmtty[fmt.type]
    except KeyError:
        cellty = XL_CELL_NUMBER
    self._xf_index_to_xl_type_map[xf.xf_index] = cellty

    # Now for some assertions ...
    if self.formatting_info:
        if self.verbosity and xf.is_style and xf.parent_style_index != 0x0FFF:
            msg = "WARNING *** XF[%d] is a style XF but parent_style_index is 0x%04x, not 0x0fff\n"
            fprintf(self.logfile, msg, xf.xf_index, xf.parent_style_index)
        check_colour_indexes_in_obj(self, xf, xf.xf_index)
    if xf.format_key not in self.format_map:
        msg = "WARNING *** XF[%d] unknown (raw) format key (%d, 0x%04x)\n"
        if self.verbosity:
            fprintf(self.logfile, msg,
                xf.xf_index, xf.format_key, xf.format_key)
        xf.format_key = 0

level = 0
        if bv >= 80:
            try:
                name = unpack_unicode(data, 2, lenlen=2)
            except UnicodeDecodeError:
                print("STYLE: built_in=%d xf_index=%d built_in_id=%d level=%d"
                    % (built_in, xf_index, built_in_id, level), file=book.logfile)
                print("raw bytes:", repr(data[2:]), file=book.logfile)
                raise
        else:
            name = unpack_string(data, 2, book.encoding, lenlen=1)
        if blah and not name:
            print("WARNING *** A user-defined style has a zero-length name", file=book.logfile)
    book.style_name_map[name] = (built_in, xf_index)
    if blah:
        fprintf(book.logfile, "STYLE: built_in=%d xf_index=%d built_in_id=%d level=%d name=%r\n",
            built_in, xf_index, built_in_id, level, name)

xf = self.xf_list[xfx]

        try:
            fmt = self.format_map[xf.format_key]
            cellty = _cellty_from_fmtty[fmt.type]
        except KeyError:
            cellty = XL_CELL_TEXT
        self._xf_index_to_xl_type_map[xf.xf_index] = cellty
        # Now for some assertions etc
        if not self.formatting_info:
            continue
        if xf.is_style:
            continue
        if not(0 <= xf.parent_style_index < num_xfs):
            if blah1:
                fprintf(self.logfile,
                    "WARNING *** XF[%d]: is_style=%d but parent_style_index=%d\n",
                    xf.xf_index, xf.is_style, xf.parent_style_index)
            # make it conform
            xf.parent_style_index = 0
        if self.biff_version >= 30:
            if blah1:
                if xf.parent_style_index == xf.xf_index:
                    fprintf(self.logfile,
                        "NOTE !!! XF[%d]: parent_style_index is also %d\n",
                        xf.xf_index, xf.parent_style_index)
                elif not self.xf_list[xf.parent_style_index].is_style:
                    fprintf(self.logfile,
                        "NOTE !!! XF[%d]: parent_style_index is %d; style flag not set\n",
                        xf.xf_index, xf.parent_style_index)
            if blah1 and xf.parent_style_index > xf.xf_index:
                fprintf(self.logfile,

def check_same(book_arg, xf_arg, parent_arg, attr):
        # the _arg caper is to avoid a Warning msg from Python 2.1 :-(
        if getattr(xf_arg, attr) != getattr(parent_arg, attr):
            fprintf(book_arg.logfile,
                "NOTE !!! XF[%d] parent[%d] %s different\n",
                xf_arg.xf_index, parent_arg.xf_index, attr)

if blah:
        fprintf(self.logfile,
            "FORMAT: count=%d fmtkey=0x%04x (%d) s=%r\n",
            self.actualfmtcount, fmtkey, fmtkey, unistrg)
    is_date_s = self.is_date_format_string(unistrg)
    ty = [FGE, FDT][is_date_s]
    if not(fmtkey > 163 or bv < 50):
        # user_defined if fmtkey > 163
        # N.B. Gnumeric incorrectly starts these at 50 instead of 164 :-(
        # if earlier than BIFF 5, standard info is useless
        std_ty = std_format_code_types.get(fmtkey, FUN)
        # print "std ty", std_ty
        is_date_c = std_ty == FDT
        if self.verbosity and 0 < fmtkey < 50 and (is_date_c ^ is_date_s):
            DEBUG = 2
            fprintf(self.logfile,
                "WARNING *** Conflict between "
                "std format key %d and its format string %r\n",
                fmtkey, unistrg)
    if DEBUG == 2:
        fprintf(self.logfile,
            "ty: %d; is_date_c: %r; is_date_s: %r; fmt_strg: %r",
            ty, is_date_c, is_date_s, unistrg)
    fmtobj = Format(fmtkey, ty, unistrg)
    if blah:
        fmtobj.dump(self.logfile,
            header="--- handle_format [%d] ---" % (self.actualfmtcount-1, ))
    self.format_map[fmtkey] = fmtobj
    self.format_list.append(fmtobj)

self.derive_encoding()
    strpos = 2
    if bv >= 50:
        fmtkey = unpack('= 80:
        unistrg = unpack_unicode(data, 2)
    else:
        unistrg = unpack_string(data, strpos, self.encoding, lenlen=1)
    blah = DEBUG or self.verbosity >= 3
    if blah:
        fprintf(self.logfile,
            "FORMAT: count=%d fmtkey=0x%04x (%d) s=%r\n",
            self.actualfmtcount, fmtkey, fmtkey, unistrg)
    is_date_s = self.is_date_format_string(unistrg)
    ty = [FGE, FDT][is_date_s]
    if not(fmtkey > 163 or bv < 50):
        # user_defined if fmtkey > 163
        # N.B. Gnumeric incorrectly starts these at 50 instead of 164 :-(
        # if earlier than BIFF 5, standard info is useless
        std_ty = std_format_code_types.get(fmtkey, FUN)
        # print "std ty", std_ty
        is_date_c = std_ty == FDT
        if self.verbosity and 0 < fmtkey < 50 and (is_date_c ^ is_date_s):
            DEBUG = 2
            fprintf(self.logfile,
                "WARNING *** Conflict between "
                "std format key %d and its format string %r\n",

if blah1 and xf.parent_style_index > xf.xf_index:
                fprintf(self.logfile,
                    "NOTE !!! XF[%d]: parent_style_index is %d; out of order?\n",
                    xf.xf_index, xf.parent_style_index)
            parent = self.xf_list[xf.parent_style_index]
            if not xf._alignment_flag and not parent._alignment_flag:
                if blah1: check_same(self, xf, parent, 'alignment')
            if not xf._background_flag and not parent._background_flag:
                if blah1: check_same(self, xf, parent, 'background')
            if not xf._border_flag and not parent._border_flag:
                if blah1: check_same(self, xf, parent, 'border')
            if not xf._protection_flag and not parent._protection_flag:
                if blah1: check_same(self, xf, parent, 'protection')
            if not xf._format_flag and not parent._format_flag:
                if blah1 and xf.format_key != parent.format_key:
                    fprintf(self.logfile,
                        "NOTE !!! XF[%d] fmtk=%d, parent[%d] fmtk=%r\n%r / %r\n",
                        xf.xf_index, xf.format_key, parent.xf_index, parent.format_key,
                        self.format_map[xf.format_key].format_str,
                        self.format_map[parent.format_key].format_str)
            if not xf._font_flag and not parent._font_flag:
                if blah1 and xf.font_index != parent.font_index:
                    fprintf(self.logfile,
                        "NOTE !!! XF[%d] fontx=%d, parent[%d] fontx=%r\n",
                        xf.xf_index, xf.font_index, parent.xf_index, parent.font_index)