Removed overwritten builtins from mosto of the files.

Just started the process of cleaning up the code base.
2026-04-20 21:21:35 +02:00 · 2020-04-19 19:06:09 +02:00
parent 571da747b3
commit b66cbd2c1e
95 changed files with 167 additions and 269 deletions
@@ -5,7 +5,7 @@ __docformat__ = 'restructuredtext en'

 import sys, os, re, time, random, warnings
 import pkg_resources
-from ebook_converter.polyglot.builtins import codepoint_to_chr, unicode_type, range, hasenv, native_string_type
+from ebook_converter.polyglot.builtins import codepoint_to_chr, unicode_type, hasenv, native_string_type
 from math import floor
 from functools import partial

@@ -1,7 +1,7 @@
 #!/usr/bin/env python2
 # vim:fileencoding=utf-8
 # License: GPLv3 Copyright: 2015, Kovid Goyal <kovid at kovidgoyal.net>
-from ebook_converter.polyglot.builtins import map, unicode_type, environ_item, hasenv, getenv, as_unicode, native_string_type
+from ebook_converter.polyglot.builtins import unicode_type, environ_item, hasenv, getenv, as_unicode, native_string_type
 import sys, locale, codecs, os, importlib, collections

 __appname__   = 'calibre'
@@ -15,7 +15,7 @@ import operator
 import string

 from ebook_converter.css_selectors.errors import SelectorSyntaxError, ExpressionError
-from ebook_converter.polyglot.builtins import unicode_type, codepoint_to_chr, range
+from ebook_converter.polyglot.builtins import unicode_type, codepoint_to_chr


 utab = {c:c+32 for c in range(ord(u'A'), ord(u'Z')+1)}
@@ -1,5 +1,5 @@
 from ebook_converter.customize import Plugin as _Plugin
-from ebook_converter.polyglot.builtins import zip
+

 __license__ = 'GPL 3'
 __copyright__ = '2009, Kovid Goyal <kovid@kovidgoyal.net>'
@@ -11,7 +11,7 @@ from ebook_converter import as_unicode
 from ebook_converter.constants import ispy3
 from ebook_converter.customize import (Plugin, numeric_version, platform,
        InvalidPlugin, PluginNotFound)
-from ebook_converter.polyglot.builtins import (itervalues, map, string_or_bytes,
+from ebook_converter.polyglot.builtins import (itervalues, string_or_bytes,
        unicode_type, reload)


@@ -1,24 +1,20 @@
 # License: GPLv3 Copyright: 2019, Kovid Goyal <kovid at kovidgoyal.net>
 import bs4
-from bs4 import (  # noqa
-    CData, Comment, Declaration, NavigableString, ProcessingInstruction,
-    SoupStrainer, Tag, __version__
-)
+from html5_parser import soup as html5_soup

-from ebook_converter.polyglot.builtins import unicode_type
+from ebook_converter.ebooks import chardet
+from ebook_converter.utils import cleantext


 def parse_html(markup):
-    from ebook_converter.ebooks.chardet import strip_encoding_declarations, xml_to_unicode, substitute_entites
-    from ebook_converter.utils.cleantext import clean_xml_chars
-    if isinstance(markup, unicode_type):
-        markup = strip_encoding_declarations(markup)
-        markup = substitute_entites(markup)
+    if isinstance(markup, str):
+        markup = chardet.strip_encoding_declarations(markup)
+        markup = chardet.substitute_entites(markup)
    else:
-        markup = xml_to_unicode(markup, strip_encoding_pats=True, resolve_entities=True)[0]
-    markup = clean_xml_chars(markup)
-    from html5_parser.soup import parse
-    return parse(markup, return_root=False)
+        markup = chardet.xml_to_unicode(markup, strip_encoding_pats=True,
+                                        resolve_entities=True)[0]
+    markup = cleantext.clean_xml_chars(markup)
+    return html5_soup.parse(markup, return_root=False)


 def prettify(soup):
@@ -28,9 +24,9 @@ def prettify(soup):
    return ans


-def BeautifulSoup(markup='', *a, **kw):
+def html5_parser(markup='', *a, **kw):
    return parse_html(markup)


-def BeautifulStoneSoup(markup='', *a, **kw):
+def beautiful_soup_parser(markup='', *a, **kw):
    return bs4.BeautifulSoup(markup, 'xml')
@@ -2,7 +2,6 @@ import io
 from struct import pack

 from ebook_converter.ebooks.compression import cPalmdoc
-from ebook_converter.polyglot.builtins import range


 __license__ = 'GPL v3'
@@ -6,7 +6,7 @@ import shutil, textwrap, codecs, os
 from ebook_converter.customize.conversion import InputFormatPlugin, OptionRecommendation
 from ebook_converter import CurrentDir
 from ebook_converter.ptempfile import PersistentTemporaryDirectory
-from ebook_converter.polyglot.builtins import getcwd, map
+from ebook_converter.polyglot.builtins import getcwd


 __license__ = 'GPL v3'
@@ -4,7 +4,7 @@ from ebook_converter.customize.conversion import (OutputFormatPlugin,
        OptionRecommendation)
 from ebook_converter.ptempfile import TemporaryDirectory
 from ebook_converter import CurrentDir
-from ebook_converter.polyglot.builtins import unicode_type, filter, map, zip, range, as_bytes
+from ebook_converter.polyglot.builtins import unicode_type, as_bytes


 __license__ = 'GPL v3'
@@ -7,7 +7,7 @@ from ebook_converter.customize.conversion import (InputFormatPlugin,
 from ebook_converter.utils.localization import get_lang
 from ebook_converter.utils.filenames import ascii_filename
 from ebook_converter.utils.imghdr import what
-from ebook_converter.polyglot.builtins import unicode_type, zip, getcwd, as_unicode
+from ebook_converter.polyglot.builtins import unicode_type, getcwd, as_unicode


 __license__ = 'GPL v3'
@@ -2,7 +2,7 @@ import os, glob, re, textwrap
 import pkg_resources

 from ebook_converter.customize.conversion import InputFormatPlugin, OptionRecommendation
-from ebook_converter.polyglot.builtins import iteritems, filter, getcwd, as_bytes
+from ebook_converter.polyglot.builtins import iteritems, getcwd, as_bytes

 __license__ = 'GPL v3'
 __copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
@@ -13,7 +13,7 @@ from ebook_converter.utils.zipfile import ZipFile
 from ebook_converter import (extract, walk, isbytestring, filesystem_encoding,
        get_types_map)
 from ebook_converter.constants import __version__
-from ebook_converter.polyglot.builtins import unicode_type, string_or_bytes, map
+from ebook_converter.polyglot.builtins import unicode_type, string_or_bytes


 __license__ = 'GPL 3'
@@ -2,7 +2,7 @@ import functools, re, json
 from math import ceil

 from ebook_converter import entity_to_unicode, as_unicode
-from ebook_converter.polyglot.builtins import unicode_type, range
+from ebook_converter.polyglot.builtins import unicode_type


 __license__ = 'GPL v3'
@@ -2,7 +2,7 @@ import re, random, unicodedata, numbers
 from collections import namedtuple
 from contextlib import contextmanager
 from math import ceil, sqrt, cos, sin, atan2
-from ebook_converter.polyglot.builtins import iteritems, itervalues, map, zip, string_or_bytes
+from ebook_converter.polyglot.builtins import iteritems, itervalues, string_or_bytes
 from itertools import chain

 from PyQt5.Qt import (
@@ -1,5 +1,5 @@
 import os
-from ebook_converter.polyglot.builtins import itervalues, range
+from ebook_converter.polyglot.builtins import itervalues


 __license__ = 'GPL v3'
@@ -6,7 +6,7 @@ from ebook_converter.utils.filenames import ascii_filename
 from ebook_converter.utils.fonts.scanner import font_scanner, NoFonts
 from ebook_converter.utils.fonts.utils import panose_to_css_generic_family, is_truetype_font
 from ebook_converter.utils.icu import ord_string
-from ebook_converter.polyglot.builtins import codepoint_to_chr, iteritems, range
+from ebook_converter.polyglot.builtins import codepoint_to_chr, iteritems


 __license__ = 'GPL v3'
@@ -3,7 +3,7 @@ from operator import itemgetter
 from lxml import etree

 from ebook_converter.utils.icu import partition_by_first_letter, sort_key
-from ebook_converter.polyglot.builtins import iteritems, filter
+from ebook_converter.polyglot.builtins import iteritems


 __license__ = 'GPL v3'
@@ -2,7 +2,7 @@ from lxml.html.builder import TABLE, TR, TD

 from ebook_converter.ebooks.docx.block_styles import inherit, read_shd as rs, read_border, binary_property, border_props, ParagraphStyle, border_to_css
 from ebook_converter.ebooks.docx.char_styles import RunStyle
-from ebook_converter.polyglot.builtins import filter, iteritems, itervalues, range, unicode_type
+from ebook_converter.polyglot.builtins import iteritems, itervalues, unicode_type


 __license__ = 'GPL v3'
@@ -21,7 +21,7 @@ from ebook_converter.ebooks.docx.fields import Fields
 from ebook_converter.ebooks.docx.settings import Settings
 from ebook_converter.ebooks.metadata.opf2 import OPFCreator
 from ebook_converter.utils.localization import canonicalize_lang, lang_as_iso639_1
-from ebook_converter.polyglot.builtins import iteritems, itervalues, filter, getcwd, map, unicode_type
+from ebook_converter.polyglot.builtins import iteritems, itervalues, getcwd, unicode_type


 __license__ = 'GPL v3'
@@ -5,7 +5,7 @@ from lxml.etree import tostring

 from ebook_converter.ebooks.metadata.toc import TOC
 from ebook_converter.ebooks.oeb.polish.toc import elem_to_toc_text
-from ebook_converter.polyglot.builtins import iteritems, range
+from ebook_converter.polyglot.builtins import iteritems


 __license__ = 'GPL v3'
@@ -11,7 +11,7 @@ from ebook_converter.ebooks.pdf.render.common import PAPER_SIZES
 from ebook_converter.utils.date import utcnow
 from ebook_converter.utils.localization import canonicalize_lang, lang_as_iso639_1
 from ebook_converter.utils.zipfile import ZipFile
-from ebook_converter.polyglot.builtins import iteritems, map, unicode_type, native_string_type
+from ebook_converter.polyglot.builtins import iteritems, unicode_type, native_string_type


 __license__ = 'GPL v3'
@@ -3,7 +3,6 @@ from uuid import uuid4

 from ebook_converter.ebooks.oeb.base import OEB_STYLES
 from ebook_converter.ebooks.oeb.transforms.subset import find_font_face_rules
-from ebook_converter.polyglot.builtins import range


 __license__ = 'GPL v3'
@@ -2,7 +2,7 @@ import os
 import posixpath
 from collections import namedtuple
 from functools import partial
-from ebook_converter.polyglot.builtins import iteritems, itervalues, map, unicode_type
+from ebook_converter.polyglot.builtins import iteritems, itervalues, unicode_type

 from lxml import etree

@@ -7,7 +7,7 @@ from lxml import etree
 from ebook_converter.ebooks import parse_css_length
 from ebook_converter.ebooks.docx.writer.utils import convert_color, int_or_zero
 from ebook_converter.utils.localization import lang_as_iso639_1
-from ebook_converter.polyglot.builtins import iteritems, filter, unicode_type
+from ebook_converter.polyglot.builtins import iteritems, unicode_type
 from ebook_converter.tinycss.css21 import CSS21Parser


@@ -2,7 +2,7 @@ from collections import namedtuple

 from ebook_converter.ebooks.docx.writer.utils import convert_color
 from ebook_converter.ebooks.docx.writer.styles import read_css_block_borders as rcbb, border_edges
-from ebook_converter.polyglot.builtins import iteritems, range, unicode_type
+from ebook_converter.polyglot.builtins import iteritems, unicode_type


 __license__ = 'GPL v3'
@@ -12,7 +12,7 @@ from ebook_converter.utils.localization import lang_as_iso639_1
 from ebook_converter.utils.xml_parse import safe_xml_fromstring
 from ebook_converter.utils.img import save_cover_data_to
 from ebook_converter.ebooks.oeb.base import urlnormalize
-from ebook_converter.polyglot.builtins import unicode_type, string_or_bytes, range, filter
+from ebook_converter.polyglot.builtins import unicode_type, string_or_bytes
 from ebook_converter.polyglot.binary import as_base64_unicode
 from ebook_converter.polyglot.urllib import urlparse

@@ -17,15 +17,15 @@ from functools import partial
 from itertools import chain
 from math import ceil, floor

+import bs4
+
 from ebook_converter import (
    __appname__, entity_to_unicode, fit_image, force_unicode, preferred_encoding
 )
 from ebook_converter.constants import filesystem_encoding
 from ebook_converter.devices.interface import DevicePlugin as Device
 from ebook_converter.ebooks import ConversionError
-from ebook_converter.ebooks.BeautifulSoup import (
-    BeautifulSoup, Comment, Declaration, NavigableString, ProcessingInstruction, Tag
-)
+from ebook_converter.ebooks.BeautifulSoup import html5_parser
 from ebook_converter.ebooks.chardet import xml_to_unicode
 from ebook_converter.ebooks.lrf import Book
 from ebook_converter.ebooks.lrf.html.color_map import lrs_color
@@ -86,7 +86,7 @@ def tag_regex(tagname):
 class HTMLConverter(object):
    SELECTOR_PAT   = re.compile(r"([A-Za-z0-9\-\_\:\.]+[A-Za-z0-9\-\_\:\.\s\,]*)\s*\{([^\}]*)\}")
    PAGE_BREAK_PAT = re.compile(r'page-break-(?:after|before)\s*:\s*(\w+)', re.IGNORECASE)
-    IGNORED_TAGS   = (Comment, Declaration, ProcessingInstruction)
+    IGNORED_TAGS   = (bs4.Comment, bs4.Declaration, bs4.ProcessingInstruction)

    MARKUP_MASSAGE   = [
                        # Close <a /> tags
@@ -337,7 +337,7 @@ class HTMLConverter(object):
            raw = xml_to_unicode(raw, replace_entities=True)[0]
        for pat, repl in nmassage:
            raw = pat.sub(repl, raw)
-        soup = BeautifulSoup(raw)
+        soup = html5_parser(raw)
        if not self.baen and self.is_baen(soup):
            self.baen = True
            self.log.info(_('\tBaen file detected. Re-parsing...'))
@@ -585,9 +585,9 @@ class HTMLConverter(object):
                break
            if isinstance(c, HTMLConverter.IGNORED_TAGS):
                continue
-            if isinstance(c, NavigableString):
+            if isinstance(c, bs4.NavigableString):
                text += unicode_type(c)
-            elif isinstance(c, Tag):
+            elif isinstance(c, bs4.Tag):
                if c.name.lower() == 'img' and c.has_attr('alt'):
                    alt_text += c['alt']
                    continue
@@ -720,9 +720,9 @@ class HTMLConverter(object):
        for c in copy.copy(ptag.contents):
            if isinstance(c, HTMLConverter.IGNORED_TAGS):
                continue
-            elif isinstance(c, Tag):
+            elif isinstance(c, bs4.Tag):
                self.parse_tag(c, pcss)
-            elif isinstance(c, NavigableString):
+            elif isinstance(c, bs4.NavigableString):
                self.add_text(c, pcss, ppcss)
        if not self.in_table:
            try:
@@ -1551,11 +1551,11 @@ class HTMLConverter(object):

                if tag.contents:
                    c = tag.contents[0]
-                    if isinstance(c, NavigableString):
+                    if isinstance(c, bs4.NavigableString):
                        c = unicode_type(c).replace('\r\n', '\n').replace('\r', '\n')
                        if c.startswith('\n'):
                            c = c[1:]
-                            tag.contents[0] = NavigableString(c)
+                            tag.contents[0] = bs4.NavigableString(c)
                            tag.contents[0].setup(tag)
                self.process_children(tag, tag_css, tag_pseudo_css)
                self.end_current_block()
@@ -1823,7 +1823,7 @@ def process_file(path, options, logger):
    for prop in ('author', 'author_sort', 'title', 'title_sort', 'publisher', 'freetext'):
        val = getattr(options, prop, None)
        if val and not isinstance(val, unicode_type):
-            soup = BeautifulSoup(val)
+            soup = html5_parser(val)
            setattr(options, prop, unicode_type(soup))

    title = (options.title, options.title_sort)
@@ -4,7 +4,7 @@ from ebook_converter.ebooks.lrf.fonts import get_font
 from ebook_converter.ebooks.lrf.pylrs.pylrs import TextBlock, Text, CR, Span, \
                                             CharButton, Plot, Paragraph, \
                                             LrsTextTag
-from ebook_converter.polyglot.builtins import string_or_bytes, range, native_string_type
+from ebook_converter.polyglot.builtins import string_or_bytes, native_string_type


 __license__ = 'GPL v3'
@@ -6,7 +6,7 @@ import os, sys, re

 from ebook_converter import relpath, guess_type, prints, force_unicode
 from ebook_converter.utils.config_base import tweaks
-from ebook_converter.polyglot.builtins import codepoint_to_chr, unicode_type, range, map, zip, getcwd, iteritems, itervalues, as_unicode
+from ebook_converter.polyglot.builtins import codepoint_to_chr, unicode_type, getcwd, iteritems, itervalues, as_unicode
 from ebook_converter.polyglot.urllib import quote, unquote, urlparse


@@ -3,7 +3,7 @@ from contextlib import closing

 from ebook_converter.customize import FileTypePlugin
 from ebook_converter.utils.localization import canonicalize_lang
-from ebook_converter.polyglot.builtins import filter, unicode_type
+from ebook_converter.polyglot.builtins import unicode_type


 __license__ = 'GPL v3'
@@ -7,7 +7,7 @@ from ebook_converter.ebooks.metadata.book import (SC_COPYABLE_FIELDS,
        TOP_LEVEL_IDENTIFIERS, ALL_METADATA_FIELDS)
 from ebook_converter.library.field_metadata import FieldMetadata
 from ebook_converter.utils.icu import sort_key
-from ebook_converter.polyglot.builtins import iteritems, unicode_type, filter, map
+from ebook_converter.polyglot.builtins import iteritems, unicode_type


 __license__ = 'GPL v3'
@@ -17,7 +17,7 @@ from ebook_converter import prints, guess_type
 from ebook_converter.utils.cleantext import clean_ascii_chars, clean_xml_chars
 from ebook_converter.utils.config import tweaks
 from ebook_converter.utils.xml_parse import safe_xml_fromstring
-from ebook_converter.polyglot.builtins import iteritems, unicode_type, getcwd, map
+from ebook_converter.polyglot.builtins import iteritems, unicode_type, getcwd
 from ebook_converter.polyglot.urllib import unquote, urlparse


@@ -2,7 +2,7 @@ import json
 import re
 from collections import defaultdict, namedtuple
 from functools import wraps
-from ebook_converter.polyglot.builtins import iteritems, map, filter
+from ebook_converter.polyglot.builtins import iteritems

 from lxml import etree

@@ -6,7 +6,7 @@ import re

 from ebook_converter import force_unicode
 from ebook_converter.ebooks.metadata import MetaInformation
-from ebook_converter.polyglot.builtins import codepoint_to_chr, string_or_bytes, unicode_type, int_to_byte, filter
+from ebook_converter.polyglot.builtins import codepoint_to_chr, string_or_bytes, unicode_type, int_to_byte

 title_pat    = re.compile(br'\{\\info.*?\{\\title(.*?)(?<!\\)\}', re.DOTALL)
 author_pat   = re.compile(br'\{\\info.*?\{\\author(.*?)(?<!\\)\}', re.DOTALL)
@@ -7,7 +7,6 @@ from ebook_converter.spell import parse_lang_code
 from ebook_converter.utils.cleantext import clean_xml_chars
 from ebook_converter.utils.localization import lang_as_iso639_1
 from ebook_converter.utils.xml_parse import safe_xml_fromstring
-from ebook_converter.polyglot.builtins import filter, map


 OPFVersion = namedtuple('OPFVersion', 'major minor patch')
@@ -12,7 +12,7 @@ from ebook_converter.ebooks.metadata.book.base import Metadata
 from ebook_converter.ebooks.metadata.opf2 import dump_dict
 from ebook_converter.utils.date import parse_date, isoformat, now
 from ebook_converter.utils.localization import canonicalize_lang, lang_as_iso639_1
-from ebook_converter.polyglot.builtins import iteritems, string_or_bytes, filter
+from ebook_converter.polyglot.builtins import iteritems, string_or_bytes


 __license__ = 'GPL v3'
@@ -5,7 +5,6 @@ darkninja and igorsk.
 import struct

 from ebook_converter.ebooks.mobi import MobiError
-from ebook_converter.polyglot.builtins import map


 __license__ = 'GPL v3'
@@ -3,7 +3,7 @@ from collections import OrderedDict, namedtuple

 from ebook_converter.ebooks.mobi.utils import (decint, count_set_bits,
        decode_string)
-from ebook_converter.polyglot.builtins import iteritems, range, zip
+from ebook_converter.polyglot.builtins import iteritems


 __license__ = 'GPL v3'
@@ -1,7 +1,7 @@
 import re, os

 from ebook_converter.ebooks.chardet import strip_encoding_declarations
-from ebook_converter.polyglot.builtins import unicode_type, range
+from ebook_converter.polyglot.builtins import unicode_type


 __license__ = 'GPL v3'
@@ -16,7 +16,7 @@ from ebook_converter.ebooks.metadata.toc import TOC
 from ebook_converter.ebooks.mobi.reader.headers import BookHeader
 from ebook_converter.utils.img import save_cover_data_to, gif_data_to_png_data, AnimatedGIF
 from ebook_converter.utils.imghdr import what
-from ebook_converter.polyglot.builtins import iteritems, unicode_type, range, map
+from ebook_converter.polyglot.builtins import iteritems, unicode_type


 __license__ = 'GPL v3'
@@ -15,7 +15,7 @@ from ebook_converter.ebooks.metadata.toc import TOC
 from ebook_converter.ebooks.mobi.utils import read_font_record
 from ebook_converter.ebooks.oeb.parse_utils import parse_html
 from ebook_converter.ebooks.oeb.base import XPath, XHTML, xml2text
-from ebook_converter.polyglot.builtins import range, zip, unicode_type, getcwd, as_unicode
+from ebook_converter.polyglot.builtins import unicode_type, getcwd, as_unicode
 from ebook_converter.polyglot.urllib import urldefrag


@@ -5,7 +5,7 @@ from io import BytesIO
 from ebook_converter.utils.img import save_cover_data_to, scale_image, image_to_data, image_from_data, resize_image, png_data_to_gif_data
 from ebook_converter.utils.imghdr import what
 from ebook_converter.ebooks import normalize
-from ebook_converter.polyglot.builtins import unicode_type, range, as_bytes, map
+from ebook_converter.polyglot.builtins import unicode_type, as_bytes
 from ebook_converter.tinycss.color3 import parse_color_string


@@ -5,7 +5,7 @@ from collections import OrderedDict, defaultdict

 from ebook_converter.ebooks.mobi.utils import (encint, encode_number_as_hex,
        encode_tbs, align_block, RECORD_SIZE, CNCX as CNCX_)
-from ebook_converter.polyglot.builtins import filter, iteritems, itervalues, map, range
+from ebook_converter.polyglot.builtins import iteritems, itervalues


 __license__ = 'GPL v3'
@@ -10,7 +10,7 @@ from ebook_converter.ebooks.mobi.writer2 import (PALMDOC, UNCOMPRESSED)
 from ebook_converter.ebooks.mobi.utils import (encint, encode_trailing_data,
        align_block, detect_periodical, RECORD_SIZE, create_text_record)
 from ebook_converter.ebooks.mobi.writer2.indexer import Indexer
-from ebook_converter.polyglot.builtins import iteritems, unicode_type, range
+from ebook_converter.polyglot.builtins import iteritems, unicode_type


 __license__ = 'GPL v3'
@@ -15,7 +15,7 @@ from odf.namespaces import TEXTNS as odTEXTNS
 from ebook_converter import CurrentDir, walk
 from ebook_converter.ebooks.oeb.base import _css_logger
 from ebook_converter.utils.xml_parse import safe_xml_fromstring
-from ebook_converter.polyglot.builtins import unicode_type, string_or_bytes, filter, getcwd, as_bytes
+from ebook_converter.polyglot.builtins import unicode_type, string_or_bytes, getcwd, as_bytes


 __license__ = 'GPL v3'
@@ -16,7 +16,7 @@ from ebook_converter import (isbytestring, as_unicode, get_types_map)
 from ebook_converter.ebooks.oeb.parse_utils import barename, XHTML_NS, namespace, XHTML, parse_html, NotHTML
 from ebook_converter.utils.cleantext import clean_xml_chars
 from ebook_converter.utils.short_uuid import uuid4
-from ebook_converter.polyglot.builtins import iteritems, unicode_type, string_or_bytes, range, itervalues, filter, codepoint_to_chr
+from ebook_converter.polyglot.builtins import iteritems, unicode_type, string_or_bytes, itervalues, codepoint_to_chr
 from ebook_converter.polyglot.urllib import unquote as urlunquote, urldefrag, urljoin, urlparse, urlunparse


@@ -5,7 +5,7 @@ from css_parser.css import PropertyValue
 from css_parser import profile as cssprofiles, CSSParser
 from ebook_converter.tinycss.fonts3 import parse_font, serialize_font_family
 from ebook_converter.ebooks.oeb.base import css_text
-from ebook_converter.polyglot.builtins import iteritems, string_or_bytes, unicode_type, zip
+from ebook_converter.polyglot.builtins import iteritems, string_or_bytes, unicode_type


 __license__ = 'GPL v3'
@@ -6,7 +6,7 @@ from ebook_converter import xml_replace_entities, force_unicode
 from ebook_converter.utils.xml_parse import safe_xml_fromstring
 from ebook_converter.constants import filesystem_encoding
 from ebook_converter.ebooks.chardet import xml_to_unicode, strip_encoding_declarations
-from ebook_converter.polyglot.builtins import iteritems, itervalues, unicode_type, string_or_bytes, map
+from ebook_converter.polyglot.builtins import iteritems, itervalues, unicode_type, string_or_bytes


 __license__ = 'GPL v3'
@@ -48,7 +48,7 @@ from ebook_converter.utils.ipc.simple_worker import WorkerError, fork_job
 from ebook_converter.utils.logging import default_log
 from ebook_converter.utils.xml_parse import safe_xml_fromstring
 from ebook_converter.utils.zipfile import ZipFile
-from ebook_converter.polyglot.builtins import iteritems, map, unicode_type, zip
+from ebook_converter.polyglot.builtins import iteritems, unicode_type
 from ebook_converter.polyglot.urllib import urlparse

 exists, join, relpath = os.path.exists, os.path.join, os.path.relpath
@@ -10,7 +10,7 @@ from ebook_converter.ebooks.oeb.normalize_css import normalize_filter_css, norma
 from ebook_converter.ebooks.oeb.polish.pretty import pretty_script_or_style, pretty_xml_tree, serialize
 from ebook_converter.utils.icu import numeric_sort_key
 from ebook_converter.css_selectors import Select, SelectorError
-from ebook_converter.polyglot.builtins import iteritems, itervalues, unicode_type, filter
+from ebook_converter.polyglot.builtins import iteritems, itervalues, unicode_type


 __license__ = 'GPL v3'
@@ -1,5 +1,5 @@
 import textwrap
-from ebook_converter.polyglot.builtins import iteritems, map
+from ebook_converter.polyglot.builtins import iteritems

 # from lxml.etree import Element

@@ -1,5 +1,5 @@
 import codecs, shutil, os, posixpath
-from ebook_converter.polyglot.builtins import iteritems, itervalues, map
+from ebook_converter.polyglot.builtins import iteritems, itervalues
 from functools import partial
 from collections import Counter, defaultdict

@@ -1,5 +1,5 @@
 import copy, os, re
-from ebook_converter.polyglot.builtins import map, string_or_bytes, range
+from ebook_converter.polyglot.builtins import string_or_bytes

 from ebook_converter.ebooks.oeb.base import barename, XPNSMAP, XPath, OPF, XHTML, OEB_DOCS
 from ebook_converter.ebooks.oeb.polish.errors import MalformedMarkup
@@ -15,7 +15,7 @@ from ebook_converter.ebooks.oeb.polish.utils import guess_type, extract
 from ebook_converter.ebooks.oeb.polish.opf import set_guide_item, get_book_language
 from ebook_converter.ebooks.oeb.polish.pretty import pretty_html_tree
 from ebook_converter.utils.localization import get_lang, canonicalize_lang, lang_as_iso639_1
-from ebook_converter.polyglot.builtins import iteritems, map, unicode_type
+from ebook_converter.polyglot.builtins import iteritems, unicode_type
 from ebook_converter.polyglot.urllib import urlparse


@@ -2,7 +2,6 @@ import re, os
 from bisect import bisect

 from ebook_converter import guess_type as _guess_type, replace_entities
-from ebook_converter.polyglot.builtins import filter


 __license__ = 'GPL v3'
@@ -22,7 +22,7 @@ from ebook_converter.utils.localization import get_lang
 from ebook_converter.ptempfile import TemporaryDirectory
 from ebook_converter.constants import __appname__, __version__
 from ebook_converter import guess_type, xml_replace_entities
-from ebook_converter.polyglot.builtins import unicode_type, zip
+from ebook_converter.polyglot.builtins import unicode_type
 from ebook_converter.polyglot.urllib import unquote, urldefrag, urlparse


@@ -15,7 +15,7 @@ from ebook_converter.ebooks import unit_convert
 from ebook_converter.ebooks.oeb.base import XHTML, XHTML_NS, CSS_MIME, OEB_STYLES, xpath, urlnormalize
 from ebook_converter.ebooks.oeb.normalize_css import DEFAULTS, normalizers
 from ebook_converter.css_selectors import Select, SelectorError, INAPPROPRIATE_PSEUDO_CLASSES
-from ebook_converter.polyglot.builtins import iteritems, unicode_type, filter
+from ebook_converter.polyglot.builtins import iteritems, unicode_type
 from ebook_converter.tinycss.media3 import CSSMedia3Parser


@@ -16,7 +16,7 @@ from ebook_converter.ebooks.oeb.base import (XHTML, XHTML_NS, CSS_MIME, OEB_STYL
 from ebook_converter.ebooks.oeb.stylizer import Stylizer
 from ebook_converter.utils.filenames import ascii_filename, ascii_text
 from ebook_converter.utils.icu import numeric_sort_key
-from ebook_converter.polyglot.builtins import iteritems, unicode_type, string_or_bytes, map
+from ebook_converter.polyglot.builtins import iteritems, unicode_type, string_or_bytes


 __license__ = 'GPL v3'
@@ -10,7 +10,7 @@ from ebook_converter.library.comments import comments_to_html, markdown
 from ebook_converter.utils.date import is_date_undefined, as_local_time
 from ebook_converter.ebooks.chardet import strip_encoding_declarations
 from ebook_converter.ebooks.metadata import fmt_sidx, rating_to_stars
-from ebook_converter.polyglot.builtins import unicode_type, map
+from ebook_converter.polyglot.builtins import unicode_type


 __license__ = 'GPL v3'
@@ -14,7 +14,7 @@ from ebook_converter.ebooks.epub import rules
 from ebook_converter.ebooks.oeb.base import (OEB_STYLES, XPNSMAP as NAMESPACES,
        urldefrag, rewrite_links, XHTML, urlnormalize)
 from ebook_converter.ebooks.oeb.polish.split import do_split
-from ebook_converter.polyglot.builtins import iteritems, range, map, unicode_type
+from ebook_converter.polyglot.builtins import iteritems, unicode_type
 from ebook_converter.polyglot.urllib import unquote
 from ebook_converter.css_selectors import Select, SelectorError

@@ -2,7 +2,7 @@ from collections import defaultdict

 from ebook_converter.ebooks.oeb.base import urlnormalize, css_text
 from ebook_converter.utils.fonts.sfnt.subset import subset, NoGlyphs, UnsupportedFont
-from ebook_converter.polyglot.builtins import iteritems, itervalues, unicode_type, range
+from ebook_converter.polyglot.builtins import iteritems, itervalues, unicode_type
 from ebook_converter.tinycss.fonts3 import parse_font_family


@@ -11,7 +11,7 @@ from ebook_converter.ebooks import DRMError
 from ebook_converter.ebooks.metadata.opf2 import OPFCreator
 from ebook_converter.ebooks.pdb.ereader import EreaderError
 from ebook_converter.ebooks.pdb.formatreader import FormatReader
-from ebook_converter.polyglot.builtins import unicode_type, range
+from ebook_converter.polyglot.builtins import unicode_type


 __license__ = 'GPL v3'
@@ -9,7 +9,7 @@ from ebook_converter import CurrentDir
 from ebook_converter.ebooks.metadata.opf2 import OPFCreator
 from ebook_converter.ebooks.pdb.formatreader import FormatReader
 from ebook_converter.ebooks.pdb.ereader import EreaderError
-from ebook_converter.polyglot.builtins import unicode_type, range
+from ebook_converter.polyglot.builtins import unicode_type


 __license__ = 'GPL v3'
@@ -8,7 +8,6 @@ from ebook_converter import prepare_string_for_xml
 from ebook_converter.ebooks.pdb.formatreader import FormatReader
 from ebook_converter.ebooks.metadata import MetaInformation
 from ebook_converter.ebooks.txt.processor import opf_writer, HTML_TEMPLATE
-from ebook_converter.polyglot.builtins import range, map


 __license__ = 'GPL v3'
@@ -3,7 +3,6 @@ Read content from palmdoc pdb file.
 """
 from ebook_converter.ebooks.pdb.formatreader import FormatReader
 from ebook_converter.ptempfile import PersistentTemporaryFile
-from ebook_converter.polyglot.builtins import range


 __license__ = 'GPL v3'
@@ -9,7 +9,7 @@ from ebook_converter.ebooks.pdb.formatreader import FormatReader
 from ebook_converter.ebooks.compression.palmdoc import decompress_doc
 from ebook_converter.utils.imghdr import identify
 from ebook_converter.utils.img import save_cover_data_to, Canvas, image_from_data
-from ebook_converter.polyglot.builtins import codepoint_to_chr, range
+from ebook_converter.polyglot.builtins import codepoint_to_chr


 __license__ = 'GPL v3'
@@ -15,7 +15,7 @@ import os, re
 from ebook_converter.ebooks.rtf2xml import copy
 from ebook_converter.utils.mreplace import MReplace
 from ebook_converter.ptempfile import better_mktemp
-from ebook_converter.polyglot.builtins import codepoint_to_chr, range, filter, map
+from ebook_converter.polyglot.builtins import codepoint_to_chr
 from . import open_for_read, open_for_write


@@ -8,7 +8,7 @@ from ebook_converter.ebooks.metadata.opf2 import OPFCreator

 from ebook_converter.ebooks.conversion.preprocess import DocAnalysis
 from ebook_converter.utils.cleantext import clean_ascii_chars
-from ebook_converter.polyglot.builtins import iteritems, unicode_type, map, range, long_type
+from ebook_converter.polyglot.builtins import iteritems, unicode_type, long_type


 __license__ = 'GPL v3'
@@ -3,8 +3,6 @@ Code to manage ebook library
 """
 import os

-from ebook_converter.polyglot.builtins import range
-

 __license__ = 'GPL v3'
 __copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
@@ -6,7 +6,7 @@ from ebook_converter.customize import CatalogPlugin
 from ebook_converter.library.catalogs import FIELDS, TEMPLATE_ALLOWED_FIELDS
 from ebook_converter.customize.conversion import DummyReporter
 from ebook_converter.ebooks.metadata import format_isbn
-from ebook_converter.polyglot.builtins import filter, string_or_bytes, unicode_type
+from ebook_converter.polyglot.builtins import string_or_bytes, unicode_type


 __license__ = 'GPL v3'
@@ -1,11 +1,10 @@
 import re

+import bs4
+
 from ebook_converter import prepare_string_for_xml
 from ebook_converter.constants import preferred_encoding
-from ebook_converter.ebooks.BeautifulSoup import (
-    BeautifulSoup, CData, Comment, Declaration, NavigableString,
-    ProcessingInstruction
-)
+from ebook_converter.ebooks.BeautifulSoup import html5_parser
 from ebook_converter.utils.html2text import html2text
 from ebook_converter.polyglot.builtins import unicode_type

@@ -83,8 +82,8 @@ def comments_to_html(comments):
    # Convert two hyphens to emdash
    comments = comments.replace('--', '&mdash;')

-    soup = BeautifulSoup('<div>' + comments + '</div>').find('div')
-    result = BeautifulSoup('<div>')
+    soup = html5_parser('<div>' + comments + '</div>').find('div')
+    result = html5_parser('<div>')
    container = result.find('div')
    rtc = 0
    open_pTag = False
@@ -92,9 +91,10 @@ def comments_to_html(comments):
    all_tokens = list(soup.contents)
    inline_tags = ('br', 'b', 'i', 'em', 'strong', 'span', 'font', 'a', 'hr')
    for token in all_tokens:
-        if isinstance(token,  (CData, Comment, Declaration, ProcessingInstruction)):
+        if isinstance(token, (bs4.CData, bs4.Comment, bs4.Declaration,
+                              bs4.ProcessingInstruction)):
            continue
-        if isinstance(token, NavigableString):
+        if isinstance(token, bs4.NavigableString):
            if not open_pTag:
                pTag = result.new_tag('p')
                open_pTag = True
@@ -1,3 +1,4 @@
+import importlib
 import os
 import sys

@@ -32,153 +33,67 @@ def as_unicode(x, encoding='utf-8', errors='strict'):
    return unicode_type(x)


-def only_unicode_recursive(x, encoding='utf-8', errors='strict'):
-    # Convert any bytestrings in sets/lists/tuples/dicts to unicode
+def reraise(tp, value, tb=None):
+    try:
+        if value is None:
+            value = tp()
+        if value.__traceback__ is not tb:
+            raise value.with_traceback(tb)
+        raise value
+    finally:
+        value = None
+        tb = None
+
+
+codepoint_to_chr = chr
+unicode_type = str
+string_or_bytes = str, bytes
+string_or_unicode = str
+long_type = int
+raw_input = input
+getcwd = os.getcwd
+getenv = os.getenv
+
+
+def error_message(exc):
+    args = getattr(exc, 'args', None)
+    if args and isinstance(args[0], unicode_type):
+        return args[0]
+    return unicode_type(exc)
+
+
+def iteritems(d):
+    return iter(d.items())
+
+
+def itervalues(d):
+    return iter(d.values())
+
+
+def environ_item(x):
    if isinstance(x, bytes):
-        return x.decode(encoding, errors)
-    if isinstance(x, unicode_type):
-        return x
-    if isinstance(x, (set, list, tuple, frozenset)):
-        return type(x)(only_unicode_recursive(i, encoding, errors) for i in x)
-    if isinstance(x, dict):
-        return {only_unicode_recursive(k, encoding, errors): only_unicode_recursive(v, encoding, errors) for k, v in iteritems(x)}
+        x = x.decode('utf-8')
    return x


-if is_py3:
-    def reraise(tp, value, tb=None):
-        try:
-            if value is None:
-                value = tp()
-            if value.__traceback__ is not tb:
-                raise value.with_traceback(tb)
-            raise value
-        finally:
-            value = None
-            tb = None
+def exec_path(path, ctx=None):
+    ctx = ctx or {}
+    with open(path, 'rb') as f:
+        code = f.read()
+    code = compile(code, f.name, 'exec')
+    exec(code, ctx)

-    import builtins

-    zip = builtins.zip
-    map = builtins.map
-    filter = builtins.filter
-    range = builtins.range
+def cmp(a, b):
+    return (a > b) - (a < b)

-    codepoint_to_chr = chr
-    unicode_type = str
-    string_or_bytes = str, bytes
-    string_or_unicode = str
-    long_type = int
-    raw_input = input
-    getcwd = os.getcwd
-    getenv = os.getenv

-    def error_message(exc):
-        args = getattr(exc, 'args', None)
-        if args and isinstance(args[0], unicode_type):
-            return args[0]
-        return unicode_type(exc)
+def int_to_byte(x):
+    return bytes((x,))

-    def iteritems(d):
-        return iter(d.items())

-    def itervalues(d):
-        return iter(d.values())
-
-    def environ_item(x):
-        if isinstance(x, bytes):
-            x = x.decode('utf-8')
-        return x
-
-    def exec_path(path, ctx=None):
-        ctx = ctx or {}
-        with open(path, 'rb') as f:
-            code = f.read()
-        code = compile(code, f.name, 'exec')
-        exec(code, ctx)
-
-    def cmp(a, b):
-        return (a > b) - (a < b)
-
-    def int_to_byte(x):
-        return bytes((x,))
-
-    def reload(module):
-        import importlib
-        return importlib.reload(module)
-
-else:
-    exec("""def reraise(tp, value, tb=None):
-    try:
-        raise tp, value, tb
-    finally:
-        tb = None
-""")
-
-    from future_builtins import zip, map, filter  # noqa
-    range = xrange
-    import __builtin__ as builtins
-
-    codepoint_to_chr = unichr
-    unicode_type = unicode
-    string_or_bytes = unicode, bytes
-    string_or_unicode = str, unicode
-    long_type = long
-    exec_path = execfile
-    raw_input = builtins.raw_input
-    cmp = builtins.cmp
-    int_to_byte = chr
-    getcwd = os.getcwdu
-
-    def error_message(exc):
-        ans = exc.message
-        if isinstance(ans, bytes):
-            ans = ans.decode('utf-8', 'replace')
-        return ans
-
-    def iteritems(d):
-        return d.iteritems()
-
-    def itervalues(d):
-        return d.itervalues()
-
-    def environ_item(x):
-        if isinstance(x, unicode_type):
-            x = x.encode('utf-8')
-        return x
-
-    if hasattr(sys, 'getwindowsversion'):
-        def getenv(x, default=None):
-            if isinstance(x, bytes):
-                x = x.decode('mbcs', 'replace')
-
-            if getenv.buf is None:
-                import ctypes
-                import ctypes.wintypes as w
-                getenv.cub = ctypes.create_unicode_buffer
-                getenv.buf = getenv.cub(1024)
-                getenv.gev = ctypes.windll.kernel32.GetEnvironmentVariableW
-                getenv.gev.restype = w.DWORD
-                getenv.gev.argtypes = [w.LPCWSTR, w.LPWSTR, w.DWORD]
-            res = getenv.gev(x, getenv.buf, len(getenv.buf))
-            if res == 0:
-                return default
-            if res > len(getenv.buf) - 4:
-                getenv.buf = getenv.cub(res + 8)
-                res = getenv.gev(x, getenv.buf, len(getenv.buf))
-                if res == 0:
-                    return default
-            return getenv.buf.value
-        getenv.buf = None
-    else:
-        def getenv(x, default=None):
-            ans = os.getenv(x, default)
-            if isinstance(ans, bytes):
-                ans = ans.decode('utf-8', 'replace')
-            return ans
-
-    def reload(module):
-        return builtins.reload(module)
+def reload(module):
+    return importlib.reload(module)


 def print_to_binary_file(fileobj, encoding='utf-8'):
@@ -5,7 +5,7 @@ Provides platform independent temporary files that persist even after
 being closed.
 """
 import tempfile, os, atexit
-from ebook_converter.polyglot.builtins import map, getenv
+from ebook_converter.polyglot.builtins import getenv

 from ebook_converter.constants import (__version__, __appname__, filesystem_encoding,
        iswindows, get_windows_temp_path, isosx, ispy3)
@@ -6,10 +6,13 @@ __docformat__ = 'restructuredtext en'
 Perform various initialization tasks.
 '''

-import locale, sys, os
+import builtins
+import locale
+import sys
+import os

 # Default translation is NOOP
-from ebook_converter.polyglot.builtins import builtins, is_py3, unicode_type
+from ebook_converter.polyglot.builtins import is_py3
 builtins.__dict__['_'] = lambda s: s

 # For strings which belong in the translation tables, but which shouldn't be
@@ -75,7 +78,7 @@ if not _run_once:
        winutil, winutilerror = plugins['winutil']
        if not winutil:
            raise RuntimeError('Failed to load the winutil plugin: %s'%winutilerror)
-        if len(sys.argv) > 1 and not isinstance(sys.argv[1], unicode_type):
+        if len(sys.argv) > 1 and not isinstance(sys.argv[1], str):
            sys.argv[1:] = winutil.argv()[1-len(sys.argv):]

        if not ispy3:
@@ -110,7 +113,7 @@ if not _run_once:
    if isosx:
        enc = 'utf-8'
    for i in range(1, len(sys.argv)):
-        if not isinstance(sys.argv[i], unicode_type):
+        if not isinstance(sys.argv[i], str):
            sys.argv[i] = sys.argv[i].decode(enc, 'replace')

    #
@@ -239,7 +242,7 @@ if not _run_once:
                    if name == 'Thread':
                        name = self.name
                if name:
-                    if isinstance(name, unicode_type):
+                    if isinstance(name, str):
                        name = name.encode('ascii', 'replace').decode('ascii')
                    plugins['speedup'][0].set_thread_name(name[:15])
            except Exception:
@@ -1,6 +1,5 @@
 import re

-from ebook_converter.polyglot.builtins import map
 from ebook_converter.tinycss.css21 import CSS21Parser, ParseError
 from ebook_converter.tinycss.tokenizer import tokenize_grouped

@@ -1,6 +1,6 @@
 import re

-from ebook_converter.polyglot.builtins import codepoint_to_chr, map, range, filter
+from ebook_converter.polyglot.builtins import codepoint_to_chr
 from ebook_converter.polyglot.html_entities import name2codepoint
 from ebook_converter.constants import plugins, preferred_encoding

@@ -10,7 +10,7 @@ import pkg_resources

 from ebook_converter.utils.lock import ExclusiveFile
 from ebook_converter.constants import config_dir, CONFIG_DIR_MODE, ispy3, preferred_encoding, filesystem_encoding, iswindows
-from ebook_converter.polyglot.builtins import unicode_type, iteritems, map
+from ebook_converter.polyglot.builtins import unicode_type, iteritems

 plugin_dir = os.path.join(config_dir, 'plugins')

@@ -13,7 +13,7 @@ from ebook_converter.constants import (
    filesystem_encoding, iswindows, plugins, preferred_encoding, isosx, ispy3
 )
 from ebook_converter.utils.localization import get_udc
-from ebook_converter.polyglot.builtins import iteritems, itervalues, unicode_type, range
+from ebook_converter.polyglot.builtins import iteritems, itervalues, unicode_type


 def ascii_text(orig):
@@ -3,7 +3,7 @@ from struct import calcsize, unpack, unpack_from
 from collections import namedtuple

 from ebook_converter.utils.fonts.utils import get_font_names2, get_font_characteristics
-from ebook_converter.polyglot.builtins import range, unicode_type
+from ebook_converter.polyglot.builtins import unicode_type


 __license__ = 'GPL v3'
@@ -6,7 +6,7 @@ from ebook_converter import walk, prints, as_unicode
 from ebook_converter.constants import (config_dir, iswindows, isosx, plugins, DEBUG,
        isworker, filesystem_encoding)
 from ebook_converter.utils.fonts.metadata import FontMetadata, UnsupportedFont
-from ebook_converter.polyglot.builtins import itervalues, unicode_type, filter
+from ebook_converter.polyglot.builtins import itervalues, unicode_type


 __license__ = 'GPL v3'
@@ -1,5 +1,5 @@
 from struct import pack, unpack_from
-from ebook_converter.polyglot.builtins import range, unicode_type
+from ebook_converter.polyglot.builtins import unicode_type


 __license__ = 'GPL v3'
@@ -6,7 +6,7 @@ from ebook_converter.utils.fonts.sfnt.errors import UnsupportedFont, NoGlyphs
 from ebook_converter.utils.fonts.sfnt.cff.dict_data import TopDict, PrivateDict
 from ebook_converter.utils.fonts.sfnt.cff.constants import (cff_standard_strings,
        STANDARD_CHARSETS)
-from ebook_converter.polyglot.builtins import iteritems, itervalues, range
+from ebook_converter.polyglot.builtins import iteritems, itervalues


 __license__ = 'GPL v3'
@@ -4,7 +4,6 @@ from collections import OrderedDict
 from ebook_converter.utils.fonts.utils import read_bmp_prefix
 from ebook_converter.utils.fonts.sfnt import UnknownTable, max_power_of_two
 from ebook_converter.utils.fonts.sfnt.errors import UnsupportedFont
-from ebook_converter.polyglot.builtins import range


 __license__ = 'GPL v3'
@@ -2,7 +2,7 @@ from struct import unpack_from, calcsize
 from collections import OrderedDict, namedtuple

 from ebook_converter.utils.fonts.sfnt.errors import UnsupportedFont
-from ebook_converter.polyglot.builtins import range, iteritems
+from ebook_converter.polyglot.builtins import iteritems


 __license__ = 'GPL v3'
@@ -3,7 +3,6 @@ from struct import unpack_from, pack, calcsize
 from ebook_converter.utils.fonts.sfnt import UnknownTable, DateTimeProperty, FixedProperty
 from ebook_converter.utils.fonts.sfnt.errors import UnsupportedFont
 from ebook_converter.utils.fonts.sfnt.loca import read_array
-from ebook_converter.polyglot.builtins import zip


 __license__ = 'GPL v3'
@@ -3,7 +3,6 @@ from struct import unpack_from, calcsize, pack, error as struct_error
 from ebook_converter.utils.fonts.sfnt import (UnknownTable, FixedProperty,
        max_power_of_two)
 from ebook_converter.utils.fonts.sfnt.errors import UnsupportedFont
-from ebook_converter.polyglot.builtins import range


 __license__ = 'GPL v3'
@@ -3,7 +3,7 @@ from operator import itemgetter
 from itertools import repeat

 from ebook_converter.utils.fonts.sfnt import UnknownTable
-from ebook_converter.polyglot.builtins import iteritems, range
+from ebook_converter.polyglot.builtins import iteritems


 __license__ = 'GPL v3'
@@ -2,7 +2,6 @@ from struct import unpack_from, pack

 from ebook_converter.utils.fonts.sfnt import UnknownTable, FixedProperty
 from ebook_converter.utils.fonts.sfnt.errors import UnsupportedFont
-from ebook_converter.polyglot.builtins import zip


 __license__ = 'GPL v3'
@@ -6,7 +6,7 @@ from functools import partial
 from ebook_converter.utils.icu import safe_chr, ord_string
 from ebook_converter.utils.fonts.sfnt.container import Sfnt
 from ebook_converter.utils.fonts.sfnt.errors import UnsupportedFont, NoGlyphs
-from ebook_converter.polyglot.builtins import unicode_type, range, iteritems, itervalues, map
+from ebook_converter.polyglot.builtins import unicode_type, iteritems, itervalues


 __license__ = 'GPL v3'
@@ -2,7 +2,7 @@ import struct
 from io import BytesIO
 from collections import defaultdict

-from ebook_converter.polyglot.builtins import iteritems, itervalues, unicode_type, range, as_bytes
+from ebook_converter.polyglot.builtins import iteritems, itervalues, unicode_type, as_bytes


 __license__ = 'GPL v3'
@@ -5,7 +5,6 @@ import unicodedata
 # Setup code {{{
 from ebook_converter.constants import plugins
 from ebook_converter.polyglot.builtins import unicode_type, cmp
-from ebook_converter.polyglot.builtins import filter
 from ebook_converter.utils.config_base import tweaks


@@ -6,7 +6,6 @@ __docformat__ = 'restructuredtext en'
 import sys, os

 from ebook_converter import config_dir
-from ebook_converter.polyglot.builtins import builtins


 user_dir = os.path.join(config_dir, 'resources')
@@ -1,6 +1,6 @@
 import os

-from ebook_converter.polyglot.builtins import range, unicode_type
+from ebook_converter.polyglot.builtins import unicode_type


 class ReadOnlyFileBuffer(object):
@@ -7,7 +7,7 @@ except ValueError:
    iswindows = False

 from ebook_converter.constants import ispy3
-from ebook_converter.polyglot.builtins import iteritems, range, zip, native_string_type
+from ebook_converter.polyglot.builtins import iteritems, native_string_type


 __license__ = 'GPL v3'
@@ -10,7 +10,7 @@ from tempfile import SpooledTemporaryFile
 from ebook_converter import sanitize_file_name
 from ebook_converter.constants import filesystem_encoding
 from ebook_converter.ebooks.chardet import detect
-from ebook_converter.polyglot.builtins import unicode_type, string_or_bytes, getcwd, map, as_bytes
+from ebook_converter.polyglot.builtins import unicode_type, string_or_bytes, getcwd, as_bytes

 try:
    import zlib  # We may need its compression method