From 6b5c3bd7c9289a3ac055d43d46033e87a1b2b478 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Wed, 13 Mar 2019 15:44:45 +0530
Subject: [PATCH] Get rid of more xrange

---
 src/calibre/db/tests/legacy.py            |  5 +++--
 src/calibre/db/tests/reading.py           | 15 +++++++-------
 src/calibre/devices/cybook/t4b.py         |  4 ++--
 src/calibre/devices/kindle/apnx.py        |  3 ++-
 src/calibre/devices/mtp/test.py           |  7 ++++---
 src/calibre/ebooks/compression/palmdoc.py |  4 ++--
 src/calibre/ebooks/compression/tcr.py     |  7 ++++---
 src/calibre/ebooks/djvu/djvubzzdec.py     |  5 ++++-
 src/calibre/ebooks/docx/cleanup.py        |  3 ++-
 src/calibre/ebooks/docx/fonts.py          |  8 ++++----
 src/calibre/ebooks/docx/tables.py         |  3 ++-
 src/calibre/ebooks/docx/toc.py            |  8 ++++----
 src/calibre/ebooks/lit/reader.py          | 24 +++++++++++------------
 src/calibre/ebooks/metadata/mobi.py       |  8 ++++----
 src/calibre/ebooks/metadata/opf2.py       |  4 ++--
 src/calibre/ebooks/pdf/reflow.py          |  4 ++--
 src/calibre/ebooks/rb/reader.py           |  3 ++-
 src/calibre/ebooks/rtf2xml/tokenize.py    |  4 ++--
 src/calibre/srv/tests/http.py             |  9 +++++----
 src/calibre/srv/tests/loop.py             |  3 ++-
 src/calibre/srv/tests/web_sockets.py      |  3 ++-
 21 files changed, 74 insertions(+), 60 deletions(-)

diff --git a/src/calibre/db/tests/legacy.py b/src/calibre/db/tests/legacy.py
index 7d820d7c46..7282b7fc47 100644
--- a/src/calibre/db/tests/legacy.py
+++ b/src/calibre/db/tests/legacy.py
@@ -14,6 +14,7 @@ from operator import itemgetter
 
 from calibre.library.field_metadata import fm_as_dict
 from calibre.db.tests.base import BaseTest
+from polyglot.builtins import range
 
 # Utils {{{
 
@@ -162,11 +163,11 @@ class LegacyTest(BaseTest):
                    'comment', 'publisher', 'rating', 'series_index', 'tags',
                    'timestamp', 'uuid', 'pubdate', 'ondevice',
                    'metadata_last_modified', 'languages')
-        oldvals = {g:tuple(getattr(old, g)(x) for x in xrange(3)) + tuple(getattr(old, g)(x, True) for x in (1,2,3)) for g in getters}
+        oldvals = {g:tuple(getattr(old, g)(x) for x in range(3)) + tuple(getattr(old, g)(x, True) for x in (1,2,3)) for g in getters}
         old_rows = {tuple(r)[:5] for r in old}
         old.close()
         db = self.init_legacy()
-        newvals = {g:tuple(getattr(db, g)(x) for x in xrange(3)) + tuple(getattr(db, g)(x, True) for x in (1,2,3)) for g in getters}
+        newvals = {g:tuple(getattr(db, g)(x) for x in range(3)) + tuple(getattr(db, g)(x, True) for x in (1,2,3)) for g in getters}
         new_rows = {tuple(r)[:5] for r in db}
         for x in (oldvals, newvals):
             x['tags'] = tuple(set(y.split(',')) if y else y for y in x['tags'])
diff --git a/src/calibre/db/tests/reading.py b/src/calibre/db/tests/reading.py
index 1ef4441c70..4c95644e1a 100644
--- a/src/calibre/db/tests/reading.py
+++ b/src/calibre/db/tests/reading.py
@@ -13,6 +13,7 @@ from time import time
 
 from calibre.utils.date import utc_tz
 from calibre.db.tests.base import BaseTest
+from polyglot.builtins import range
 
 
 class ReadingTest(BaseTest):
@@ -198,18 +199,18 @@ class ReadingTest(BaseTest):
         ae([3, 2, 1], cache.multisort([('identifiers', True),
             ('title', True)]), 'Subsort failed')
         from calibre.ebooks.metadata.book.base import Metadata
-        for i in xrange(7):
+        for i in range(7):
             cache.create_book_entry(Metadata('title%d' % i), apply_import_tags=False)
         cache.create_custom_column('one', 'CC1', 'int', False)
         cache.create_custom_column('two', 'CC2', 'int', False)
         cache.create_custom_column('three', 'CC3', 'int', False)
         cache.close()
         cache = self.init_cache()
-        cache.set_field('#one', {(i+(5*m)):m for m in (0, 1) for i in xrange(1, 6)})
+        cache.set_field('#one', {(i+(5*m)):m for m in (0, 1) for i in range(1, 6)})
         cache.set_field('#two', {i+(m*3):m for m in (0, 1, 2) for i in (1, 2, 3)})
         cache.set_field('#two', {10:2})
-        cache.set_field('#three', {i:i for i in xrange(1, 11)})
-        ae(list(xrange(1, 11)), cache.multisort([('#one', True), ('#two', True)], ids_to_sort=sorted(cache.all_book_ids())))
+        cache.set_field('#three', {i:i for i in range(1, 11)})
+        ae(list(range(1, 11)), cache.multisort([('#one', True), ('#two', True)], ids_to_sort=sorted(cache.all_book_ids())))
         ae([4, 5, 1, 2, 3, 7,8, 9, 10, 6], cache.multisort([('#one', True), ('#two', False)], ids_to_sort=sorted(cache.all_book_ids())))
         ae([5, 4, 3, 2, 1, 10, 9, 8, 7, 6], cache.multisort([('#one', True), ('#two', False), ('#three', False)], ids_to_sort=sorted(cache.all_book_ids())))
     # }}}
@@ -220,7 +221,7 @@ class ReadingTest(BaseTest):
         old = LibraryDatabase2(self.library_path)
         old_metadata = {i:old.get_metadata(
             i, index_is_id=True, get_cover=True, cover_as_data=True) for i in
-                xrange(1, 4)}
+                range(1, 4)}
         for mi in old_metadata.itervalues():
             mi.format_metadata = dict(mi.format_metadata)
             if mi.formats:
@@ -231,7 +232,7 @@ class ReadingTest(BaseTest):
         cache = self.init_cache(self.library_path)
 
         new_metadata = {i:cache.get_metadata(
-            i, get_cover=True, cover_as_data=True) for i in xrange(1, 4)}
+            i, get_cover=True, cover_as_data=True) for i in range(1, 4)}
         cache = None
         for mi2, mi1 in zip(new_metadata.values(), old_metadata.values()):
             self.compare_metadata(mi1, mi2)
@@ -245,7 +246,7 @@ class ReadingTest(BaseTest):
         for d, l in ((json_dumps, json_loads), (msgpack_dumps, msgpack_loads)):
             fm2 = l(d(fm))
             self.assertEqual(fm_as_dict(fm), fm_as_dict(fm2))
-        for i in xrange(1, 4):
+        for i in range(1, 4):
             mi = cache.get_metadata(i, get_cover=True, cover_as_data=True)
             rmi = msgpack_loads(msgpack_dumps(mi))
             self.compare_metadata(mi, rmi, exclude='format_metadata has_cover formats id'.split())
diff --git a/src/calibre/devices/cybook/t4b.py b/src/calibre/devices/cybook/t4b.py
index c87d7a69b6..4940f6216a 100644
--- a/src/calibre/devices/cybook/t4b.py
+++ b/src/calibre/devices/cybook/t4b.py
@@ -8,6 +8,7 @@ Write a t4b file to disk.
 '''
 
 from io import BytesIO
+from polyglot.builtins import range
 
 DEFAULT_T4B_DATA = b'\x74\x34\x62\x70\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xc4\x00\x16\xdf\xff\xff\xf7\x6d\xff\xff\xfd\x7a\xff\xff\xff\xe7\x77\x76\xff\xf6\x77\x77\x8d\xff\xff\xe7\x77\x78\xbf\xff\xff\xf7\x77\x77\x77\x7d\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xe4\x03\x78\x61\x07\xff\xff\x90\x04\xff\xff\xfc\x05\xff\xff\xff\xd5\x30\x35\xff\xf0\x13\x32\x00\x5f\xff\xd0\x03\x32\x01\xbf\xff\xe0\x00\x00\x00\x0b\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\x50\x8f\xff\xff\x75\xff\xff\x40\x30\xef\xff\xfc\x06\xff\xff\xff\xff\xa0\x9f\xff\xf0\x6f\xff\xf5\x0d\xff\xd0\x4f\xff\xd0\x0f\xff\xe0\x3f\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfd\x05\xff\xff\xff\xfe\xff\xfe\x03\xa0\x8f\xff\xfc\x06\xff\xff\xff\xff\xa0\x9f\xff\xf0\x6f\xff\xfb\x0b\xff\xd0\x4f\xff\xf7\x0d\xff\xe0\x3f\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xf6\x0e\xff\xff\xff\xff\xff\xfa\x0b\xe0\x3f\xff\xfc\x06\xff\xff\xff\xff\xa0\x9f\xff\xf0\x6f\xff\xf5\x0e\xff\xd0\x4f\xff\xf8\x0e\xff\xe0\x3f\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xf1\x1f\xff\xff\xff\xff\xff\xf2\x0f\xf3\x0d\xff\xfc\x06\xff\xff\xff\xff\xa0\x9f\xff\xf0\x39\x88\x30\xaf\xff\xd0\x4f\xff\xf2\x1f\xff\xe0\x18\x88\x88\x8d\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xf0\x3f\xff\xff\xff\xff\xff\xd0\x6f\xfc\x09\xff\xfc\x06\xff\xff\xff\xff\xa0\x9f\xff\xf0\x01\x11\x00\x2c\xff\xd0\x3a\xa8\x20\xcf\xff\xe0\x00\x00\x00\x0b\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xf0\x2f\xff\xff\xff\xff\xff\x60\xaf\xff\x11\xff\xfc\x06\xff\xff\xff\xff\xa0\x9f\xff\xf0\x6f\xff\xfd\x10\xef\xd0\x00\x00\x1e\xff\xff\xe0\x3f\xff\xff\xff\xff\xff\x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ed\xdd\xdd\xdc\xcc\xcc\xcc\xbb\xbb\xbb\xbb\xbb\xbb\xba\xaa\xaa\xab\xba\xaa\xaa\xaa\xaa\xaa\xaa\xaa\xbb\xbb\xbb\xbb\xcc\xcc\xcc\xcd\xdd\xdd\xde\xee\xee\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xee\xee\xee\xee\xee\xee\xee\xee\xee\xee\xee\xed\xdd\xdd\xdd\xee\xee\xee\xee\xee\xee\xee\xee\xee\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff'  # noqa
 
@@ -34,8 +35,7 @@ def write_t4b(t4bfile, coverdata=None):
         pxs = t4bcover.getdata()
         t4bfile.write(b't4bp')
         data = (16 * reduce_color(pxs[i]) + reduce_color(pxs[i+1])
-                          for i in xrange(0, len(pxs), 2))
+                          for i in range(0, len(pxs), 2))
         t4bfile.write(bytes(bytearray(data)))
     else:
         t4bfile.write(DEFAULT_T4B_DATA)
-
diff --git a/src/calibre/devices/kindle/apnx.py b/src/calibre/devices/kindle/apnx.py
index d66d5feea8..d225c91b90 100644
--- a/src/calibre/devices/kindle/apnx.py
+++ b/src/calibre/devices/kindle/apnx.py
@@ -17,6 +17,7 @@ from calibre.ebooks.mobi.reader.headers import MetadataHeader
 from calibre.utils.logging import default_log
 from calibre import prints, fsync
 from calibre.constants import DEBUG
+from polyglot.builtins import range
 
 
 class APNXBuilder(object):
@@ -267,7 +268,7 @@ class APNXBuilder(object):
                     p_char_count = 0
 
         # Every 30 lines is a new page
-        for i in xrange(0, len(lines), 32):
+        for i in range(0, len(lines), 32):
             pages.append(lines[i])
 
         return pages
diff --git a/src/calibre/devices/mtp/test.py b/src/calibre/devices/mtp/test.py
index a37d6318b0..2c2251c6eb 100644
--- a/src/calibre/devices/mtp/test.py
+++ b/src/calibre/devices/mtp/test.py
@@ -13,6 +13,7 @@ from calibre.constants import iswindows, islinux
 from calibre.utils.icu import lower
 from calibre.devices.mtp.driver import MTP_DEVICE
 from calibre.devices.scanner import DeviceScanner
+from polyglot.builtins import range
 
 
 class ProgressCallback(object):
@@ -172,9 +173,9 @@ class TestDeviceInteraction(unittest.TestCase):
         gc.disable()
         try:
             start_mem = memory()
-            for i in xrange(repetitions):
+            for i in range(repetitions):
                 func(*args, **kwargs)
-            for i in xrange(3):
+            for i in range(3):
                 gc.collect()
             end_mem = memory()
         finally:
@@ -262,6 +263,6 @@ def tests():
 def run():
     unittest.TextTestRunner(verbosity=2).run(tests())
 
+
 if __name__ == '__main__':
     run()
-
diff --git a/src/calibre/ebooks/compression/palmdoc.py b/src/calibre/ebooks/compression/palmdoc.py
index 07788c4229..ebd0642c6f 100644
--- a/src/calibre/ebooks/compression/palmdoc.py
+++ b/src/calibre/ebooks/compression/palmdoc.py
@@ -9,6 +9,7 @@ from cStringIO import StringIO
 from struct import pack
 
 from calibre.constants import plugins
+from polyglot.builtins import range
 cPalmdoc = plugins['cPalmdoc'][0]
 if not cPalmdoc:
     raise RuntimeError(('Failed to load required cPalmdoc module: '
@@ -56,7 +57,7 @@ def py_compress_doc(data):
         if i > 10 and (ldata - i) > 10:
             chunk = ''
             match = -1
-            for j in xrange(10, 2, -1):
+            for j in range(10, 2, -1):
                 chunk = data[i:i+j]
                 try:
                     match = data.rindex(chunk, 0, i)
@@ -97,4 +98,3 @@ def py_compress_doc(data):
             out.write(''.join(binseq))
             i += len(binseq) - 1
     return out.getvalue()
-
diff --git a/src/calibre/ebooks/compression/tcr.py b/src/calibre/ebooks/compression/tcr.py
index 643f0bc311..35b47aaff1 100644
--- a/src/calibre/ebooks/compression/tcr.py
+++ b/src/calibre/ebooks/compression/tcr.py
@@ -5,6 +5,7 @@ __copyright__ = '2009, John Schember <john@nachtimwald.com>'
 __docformat__ = 'restructuredtext en'
 
 import re
+from polyglot.builtins import range
 
 
 class TCRCompressor(object):
@@ -48,7 +49,7 @@ class TCRCompressor(object):
         Look for codes that do no not appear in the coded text and add them to
         the list of free codes.
         '''
-        for i in xrange(256):
+        for i in range(256):
             if i not in self.unused_codes:
                 if chr(i) not in self.coded_txt:
                     self.unused_codes.add(i)
@@ -104,7 +105,7 @@ class TCRCompressor(object):
 
         # Generate the code dictionary.
         code_dict = []
-        for i in xrange(0, 256):
+        for i in range(0, 256):
             if i in self.unused_codes:
                 code_dict.append(chr(0))
             else:
@@ -122,7 +123,7 @@ def decompress(stream):
 
     # Codes that the file contents are broken down into.
     entries = []
-    for i in xrange(256):
+    for i in range(256):
         entry_len = ord(stream.read(1))
         entries.append(stream.read(entry_len))
 
diff --git a/src/calibre/ebooks/djvu/djvubzzdec.py b/src/calibre/ebooks/djvu/djvubzzdec.py
index 407794520c..33538a30ad 100644
--- a/src/calibre/ebooks/djvu/djvubzzdec.py
+++ b/src/calibre/ebooks/djvu/djvubzzdec.py
@@ -3,6 +3,8 @@
 from __future__ import (unicode_literals, division, absolute_import,
                         print_function)
 
+from polyglot.builtins import range
+
 __license__   = 'GPL v3'
 __copyright__ = '2011, Anthon van der Neut <A.van.der.Neut@ruamel.eu>'
 
@@ -505,7 +507,7 @@ class BZZDecoder():
         markerpos = -1
         zc = lambda i: self.zpcodec_decode(self.ctx, i)
         dc = lambda i, bits: self.decode_binary(self.ctx, i, bits)
-        for i in xrange(self.xsize):
+        for i in range(self.xsize):
             ctxid = CTXIDS - 1
             if ctxid > mtfno:
                 ctxid = mtfno
@@ -737,5 +739,6 @@ def main():
     d = plugins['bzzdec'][0]
     print (d.decompress(raw))
 
+
 if __name__ == "__main__":
     main()
diff --git a/src/calibre/ebooks/docx/cleanup.py b/src/calibre/ebooks/docx/cleanup.py
index 3111a6cd93..30fd9d25d9 100644
--- a/src/calibre/ebooks/docx/cleanup.py
+++ b/src/calibre/ebooks/docx/cleanup.py
@@ -7,6 +7,7 @@ __license__ = 'GPL v3'
 __copyright__ = '2013, Kovid Goyal <kovid at kovidgoyal.net>'
 
 import os
+from polyglot.builtins import range
 
 NBSP = '\xa0'
 
@@ -134,7 +135,7 @@ def cleanup_markup(log, root, styles, dest_dir, detect_cover, XPath):
 
     # Process dir attributes
     class_map = dict(styles.classes.itervalues())
-    parents = ('p', 'div') + tuple('h%d' % i for i in xrange(1, 7))
+    parents = ('p', 'div') + tuple('h%d' % i for i in range(1, 7))
     for parent in root.xpath('//*[(%s)]' % ' or '.join('name()="%s"' % t for t in parents)):
         # Ensure that children of rtl parents that are not rtl have an
         # explicit dir set. Also, remove dir from children if it is the same as
diff --git a/src/calibre/ebooks/docx/fonts.py b/src/calibre/ebooks/docx/fonts.py
index c21c202045..0aed536cab 100644
--- a/src/calibre/ebooks/docx/fonts.py
+++ b/src/calibre/ebooks/docx/fonts.py
@@ -14,7 +14,7 @@ from calibre.utils.filenames import ascii_filename
 from calibre.utils.fonts.scanner import font_scanner, NoFonts
 from calibre.utils.fonts.utils import panose_to_css_generic_family, is_truetype_font
 from calibre.utils.icu import ord_string
-from polyglot.builtins import codepoint_to_chr
+from polyglot.builtins import codepoint_to_chr, range
 
 Embed = namedtuple('Embed', 'name key subsetted')
 
@@ -84,7 +84,7 @@ class Family(object):
         for x in XPath('./w:panose1[@w:val]')(elem):
             try:
                 v = get(x, 'w:val')
-                v = tuple(int(v[i:i+2], 16) for i in xrange(0, len(v), 2))
+                v = tuple(int(v[i:i+2], 16) for i in range(0, len(v), 2))
             except (TypeError, ValueError, IndexError):
                 pass
             else:
@@ -184,9 +184,9 @@ class Fonts(object):
         prefix = raw[:32]
         if ef.key:
             key = re.sub(r'[^A-Fa-f0-9]', '', ef.key)
-            key = bytearray(reversed(tuple(int(key[i:i+2], 16) for i in xrange(0, len(key), 2))))
+            key = bytearray(reversed(tuple(int(key[i:i+2], 16) for i in range(0, len(key), 2))))
             prefix = bytearray(prefix)
-            prefix = bytes(bytearray(prefix[i]^key[i % len(key)] for i in xrange(len(prefix))))
+            prefix = bytes(bytearray(prefix[i]^key[i % len(key)] for i in range(len(prefix))))
         if not is_truetype_font(prefix):
             return None
         ext = 'otf' if prefix.startswith(b'OTTO') else 'ttf'
diff --git a/src/calibre/ebooks/docx/tables.py b/src/calibre/ebooks/docx/tables.py
index 056869aa6a..b21d723ce4 100644
--- a/src/calibre/ebooks/docx/tables.py
+++ b/src/calibre/ebooks/docx/tables.py
@@ -10,6 +10,7 @@ from lxml.html.builder import TABLE, TR, TD
 
 from calibre.ebooks.docx.block_styles import inherit, read_shd as rs, read_border, binary_property, border_props, ParagraphStyle, border_to_css
 from calibre.ebooks.docx.char_styles import RunStyle
+from polyglot.builtins import range
 
 # Read from XML {{{
 read_shd = rs
@@ -570,7 +571,7 @@ class Table(object):
             return
         # Handle vMerge
         max_col_num = max(len(r) for r in self.cell_map)
-        for c in xrange(max_col_num):
+        for c in range(max_col_num):
             cells = [row[c] if c < len(row) else None for row in self.cell_map]
             runs = [[]]
             for cell in cells:
diff --git a/src/calibre/ebooks/docx/toc.py b/src/calibre/ebooks/docx/toc.py
index 239efb9baa..53caff03e9 100644
--- a/src/calibre/ebooks/docx/toc.py
+++ b/src/calibre/ebooks/docx/toc.py
@@ -13,7 +13,7 @@ from lxml.etree import tostring
 
 from calibre.ebooks.metadata.toc import TOC
 from calibre.ebooks.oeb.polish.toc import elem_to_toc_text
-from polyglot.builtins import unicode_type
+from polyglot.builtins import unicode_type, range
 
 
 def from_headings(body, log, namespace):
@@ -22,7 +22,7 @@ def from_headings(body, log, namespace):
     headings = ('h1', 'h2', 'h3')
     tocroot = TOC()
     xpaths = [XPath('//%s' % x) for x in headings]
-    level_prev = {i+1:None for i in xrange(len(xpaths))}
+    level_prev = {i+1:None for i in range(len(xpaths))}
     level_prev[0] = tocroot
     level_item_map = {i+1:frozenset(xp(body)) for i, xp in enumerate(xpaths)}
     item_level_map = {e:i for i, elems in level_item_map.iteritems() for e in elems}
@@ -49,7 +49,7 @@ def from_headings(body, log, namespace):
         text = elem_to_toc_text(item)
         toc = parent.add_item('index.html', elem_id, text)
         level_prev[lvl] = toc
-        for i in xrange(lvl+1, len(xpaths)+1):
+        for i in range(lvl+1, len(xpaths)+1):
             level_prev[i] = None
 
     if len(tuple(tocroot.flat())) > 1:
@@ -79,7 +79,7 @@ def structure_toc(entries):
         parent = find_parent(level)
         last_found[level] = parent.add_item('index.html', item.anchor,
                     item.text)
-        for i in xrange(level+1, len(last_found)):
+        for i in range(level+1, len(last_found)):
             last_found[i] = None
 
     return newtoc
diff --git a/src/calibre/ebooks/lit/reader.py b/src/calibre/ebooks/lit/reader.py
index e733581117..86ff680e62 100644
--- a/src/calibre/ebooks/lit/reader.py
+++ b/src/calibre/ebooks/lit/reader.py
@@ -22,7 +22,7 @@ from calibre.ebooks.oeb.base import urlnormalize, xpath
 from calibre.ebooks.oeb.reader import OEBReader
 from calibre.ebooks import DRMError
 from calibre import plugins
-from polyglot.builtins import codepoint_to_chr, unicode_type, string_or_bytes
+from polyglot.builtins import codepoint_to_chr, unicode_type, string_or_bytes, range
 
 lzx, lxzerror = plugins['lzx']
 msdes, msdeserror = plugins['msdes']
@@ -105,7 +105,7 @@ def read_utf8_char(bytes, pos):
         if elsize + pos > len(bytes):
             raise LitError('Invalid UTF8 character: %s' % repr(bytes[pos]))
         c &= (mask - 1)
-        for i in xrange(1, elsize):
+        for i in range(1, elsize):
             b = ord(bytes[pos+i])
             if (b & 0xC0) != 0x80:
                 raise LitError(
@@ -117,7 +117,7 @@ def read_utf8_char(bytes, pos):
 def consume_sized_utf8_string(bytes, zpad=False):
     result = []
     slen, pos = read_utf8_char(bytes, 0)
-    for i in xrange(ord(slen)):
+    for i in range(ord(slen)):
         char, pos = read_utf8_char(bytes, pos)
         result.append(char)
     if zpad and bytes[pos] == '\000':
@@ -166,7 +166,7 @@ class UnBinary(object):
             return target
         target = target.split('/')
         base = self.dir.split('/')
-        for index in xrange(min(len(base), len(target))):
+        for index in range(min(len(base), len(target))):
             if base[index] != target[index]:
                 break
         else:
@@ -567,7 +567,7 @@ class LitFile(object):
 
     def read_header_pieces(self):
         src = self.header[self.hdr_len:]
-        for i in xrange(self.num_pieces):
+        for i in range(self.num_pieces):
             piece = src[i * self.PIECE_SIZE:(i + 1) * self.PIECE_SIZE]
             if u32(piece[4:]) != 0 or u32(piece[12:]) != 0:
                 raise LitError('Piece %s has 64bit value' % repr(piece))
@@ -597,7 +597,7 @@ class LitFile(object):
         if (32 + (num_chunks * chunk_size)) != len(piece):
             raise LitError('IFCM header has incorrect length')
         self.entries = {}
-        for i in xrange(num_chunks):
+        for i in range(num_chunks):
             offset = 32 + (i * chunk_size)
             chunk = piece[offset:offset + chunk_size]
             tag, chunk = chunk[:4], chunk[4:]
@@ -612,7 +612,7 @@ class LitFile(object):
                 # Hopefully will work even without a correct entries count
                 entries = (2 ** 16) - 1
             chunk = chunk[40:]
-            for j in xrange(entries):
+            for j in range(entries):
                 if remaining <= 0:
                     break
                 namelen, chunk, remaining = encint(chunk, remaining)
@@ -642,7 +642,7 @@ class LitFile(object):
         num_sections = u16(raw[2:pos])
         self.section_names = [""] * num_sections
         self.section_data = [None] * num_sections
-        for section in xrange(num_sections):
+        for section in range(num_sections):
             size = u16(raw[pos:pos+2])
             pos += 2
             size = size*2 + 2
@@ -669,7 +669,7 @@ class LitFile(object):
                 num_files, raw = int32(raw), raw[4:]
                 if num_files == 0:
                     continue
-                for i in xrange(num_files):
+                for i in range(num_files):
                     if len(raw) < 5:
                         raise LitError('Truncated manifest')
                     offset, raw = u32(raw), raw[4:]
@@ -740,7 +740,7 @@ class LitFile(object):
             hash.update(data)
         digest = hash.digest()
         key = [0] * 8
-        for i in xrange(0, len(digest)):
+        for i in range(0, len(digest)):
             key[i % 8] ^= ord(digest[i])
         return ''.join(chr(x) for x in key)
 
@@ -856,7 +856,7 @@ class LitFile(object):
         data = self.get_file(name)
         nentries, data = u32(data), data[4:]
         tags = {}
-        for i in xrange(1, nentries + 1):
+        for i in range(1, nentries + 1):
             if len(data) <= 1:
                 break
             size, data = ord(data[0]), data[1:]
@@ -869,7 +869,7 @@ class LitFile(object):
             return (tags, {})
         attrs = {}
         nentries, data = u32(data), data[4:]
-        for i in xrange(1, nentries + 1):
+        for i in range(1, nentries + 1):
             if len(data) <= 4:
                 break
             size, data = u32(data), data[4:]
diff --git a/src/calibre/ebooks/metadata/mobi.py b/src/calibre/ebooks/metadata/mobi.py
index 3c64bf07c4..b4ddb8da48 100644
--- a/src/calibre/ebooks/metadata/mobi.py
+++ b/src/calibre/ebooks/metadata/mobi.py
@@ -21,7 +21,7 @@ from calibre.ebooks.mobi.langcodes import iana2mobi
 from calibre.utils.date import now as nowf
 from calibre.utils.imghdr import what
 from calibre.utils.localization import canonicalize_lang, lang_as_iso639_1
-from polyglot.builtins import unicode_type
+from polyglot.builtins import unicode_type, range
 
 
 def is_image(ss):
@@ -163,7 +163,7 @@ class MetadataUpdater(object):
         nitems, = unpack('>I', exth[8:12])
         pos = 12
         # Store any EXTH fields not specifiable in GUI
-        for i in xrange(nitems):
+        for i in range(nitems):
             id, size = unpack('>II', exth[pos:pos + 8])
             content = exth[pos + 8: pos + size]
             pos += size
@@ -295,7 +295,7 @@ class MetadataUpdater(object):
 
     def get_pdbrecords(self):
         pdbrecords = []
-        for i in xrange(self.nrecs):
+        for i in range(self.nrecs):
             offset, a1,a2,a3,a4 = unpack('>LBBBB', self.data[78+i*8:78+i*8+8])
             flags, val = a1, a2<<16|a3<<8|a4
             pdbrecords.append([offset, flags, val])
@@ -312,7 +312,7 @@ class MetadataUpdater(object):
         # Diagnostic
         print("MetadataUpdater.dump_pdbrecords()")
         print("%10s %10s %10s" % ("offset","flags","val"))
-        for i in xrange(len(self.pdbrecords)):
+        for i in range(len(self.pdbrecords)):
             pdbrecord = self.pdbrecords[i]
             print("%10X %10X %10X" % (pdbrecord[0], pdbrecord[1], pdbrecord[2]))
 
diff --git a/src/calibre/ebooks/metadata/opf2.py b/src/calibre/ebooks/metadata/opf2.py
index 35c41533f3..b1b6688819 100644
--- a/src/calibre/ebooks/metadata/opf2.py
+++ b/src/calibre/ebooks/metadata/opf2.py
@@ -25,7 +25,7 @@ from calibre.utils.localization import get_lang, canonicalize_lang
 from calibre import prints, guess_type
 from calibre.utils.cleantext import clean_ascii_chars, clean_xml_chars
 from calibre.utils.config import tweaks
-from polyglot.builtins import unicode_type
+from polyglot.builtins import unicode_type, range
 
 pretty_print_opf = False
 
@@ -715,7 +715,7 @@ class OPF(object):  # {{{
     def create_manifest_item(self, href, media_type, append=False):
         ids = [i.get('id', None) for i in self.itermanifest()]
         id = None
-        for c in xrange(1, sys.maxint):
+        for c in range(1, sys.maxint):
             id = 'id%d'%c
             if id not in ids:
                 break
diff --git a/src/calibre/ebooks/pdf/reflow.py b/src/calibre/ebooks/pdf/reflow.py
index ceb4e67dea..e3f47e4eef 100644
--- a/src/calibre/ebooks/pdf/reflow.py
+++ b/src/calibre/ebooks/pdf/reflow.py
@@ -10,7 +10,7 @@ import sys, os
 
 from lxml import etree
 
-from polyglot.builtins import unicode_type
+from polyglot.builtins import unicode_type, range
 
 
 class Font(object):
@@ -623,7 +623,7 @@ class PDFDocument(object):
         self.opts, self.log = opts, log
         parser = etree.XMLParser(recover=True)
         self.root = etree.fromstring(xml, parser=parser)
-        idc = iter(xrange(sys.maxint))
+        idc = iter(range(sys.maxint))
 
         self.fonts = []
         self.font_map = {}
diff --git a/src/calibre/ebooks/rb/reader.py b/src/calibre/ebooks/rb/reader.py
index 7463b88b00..61d6db81f9 100644
--- a/src/calibre/ebooks/rb/reader.py
+++ b/src/calibre/ebooks/rb/reader.py
@@ -14,6 +14,7 @@ from calibre.ebooks.rb import HEADER
 from calibre.ebooks.rb import RocketBookError
 from calibre.ebooks.metadata.rb import get_metadata
 from calibre.ebooks.metadata.opf2 import OPFCreator
+from polyglot.builtins import range
 
 
 class RBToc(list):
@@ -80,7 +81,7 @@ class Reader(object):
             count = self.read_i32()
             self.read_i32()  # Uncompressed size.
             chunck_sizes = []
-            for i in xrange(count):
+            for i in range(count):
                 chunck_sizes.append(self.read_i32())
 
             for size in chunck_sizes:
diff --git a/src/calibre/ebooks/rtf2xml/tokenize.py b/src/calibre/ebooks/rtf2xml/tokenize.py
index 6b71f88b77..1cb0608009 100755
--- a/src/calibre/ebooks/rtf2xml/tokenize.py
+++ b/src/calibre/ebooks/rtf2xml/tokenize.py
@@ -15,7 +15,7 @@ import os, re
 from calibre.ebooks.rtf2xml import copy
 from calibre.utils.mreplace import MReplace
 from calibre.ptempfile import better_mktemp
-from polyglot.builtins import codepoint_to_chr
+from polyglot.builtins import codepoint_to_chr, range
 
 
 class Tokenize:
@@ -44,7 +44,7 @@ class Tokenize:
         self.__uc_bin = False
 
     def __remove_uc_chars(self, startchar, token):
-        for i in xrange(startchar, len(token)):
+        for i in range(startchar, len(token)):
             if self.__uc_char:
                 self.__uc_char -= 1
             else:
diff --git a/src/calibre/srv/tests/http.py b/src/calibre/srv/tests/http.py
index 4d1360af17..808c843d02 100644
--- a/src/calibre/srv/tests/http.py
+++ b/src/calibre/srv/tests/http.py
@@ -14,6 +14,7 @@ from calibre import guess_type
 from calibre.srv.tests.base import BaseTest, TestServer
 from calibre.srv.utils import eintr_retry_call
 from calibre.utils.monotonic import monotonic
+from polyglot.builtins import range
 
 is_ci = os.environ.get('CI', '').lower() == 'true'
 
@@ -271,11 +272,11 @@ class TestHTTP(BaseTest):
             conn = server.connect()
             # Test pipelining
             responses = []
-            for i in xrange(10):
+            for i in range(10):
                 conn._HTTPConnection__state = httplib._CS_IDLE
                 conn.request('GET', '/%d'%i)
                 responses.append(conn.response_class(conn.sock, strict=conn.strict, method=conn._method))
-            for i in xrange(10):
+            for i in range(10):
                 r = responses[i]
                 r.begin()
                 self.ae(r.read(), ('%d' % i).encode('ascii'))
@@ -426,7 +427,7 @@ class TestHTTP(BaseTest):
 
     def test_static_generation(self):  # {{{
         'Test static generation'
-        nums = list(map(str, xrange(10)))
+        nums = list(map(str, range(10)))
 
         def handler(conn):
             return conn.generate_static_output('test', nums.pop)
@@ -435,7 +436,7 @@ class TestHTTP(BaseTest):
             conn.request('GET', '/an_etagged_path')
             r = conn.getresponse()
             data = r.read()
-            for i in xrange(5):
+            for i in range(5):
                 conn.request('GET', '/an_etagged_path')
                 r = conn.getresponse()
                 self.assertEqual(data, r.read())
diff --git a/src/calibre/srv/tests/loop.py b/src/calibre/srv/tests/loop.py
index bed3820e29..af628456c7 100644
--- a/src/calibre/srv/tests/loop.py
+++ b/src/calibre/srv/tests/loop.py
@@ -17,6 +17,7 @@ from calibre.srv.tests.base import BaseTest, TestServer
 from calibre.ptempfile import TemporaryDirectory
 from calibre.utils.certgen import create_server_cert
 from calibre.utils.monotonic import monotonic
+from polyglot.builtins import range
 is_ci = os.environ.get('CI', '').lower() == 'true'
 
 
@@ -167,7 +168,7 @@ class LoopTest(BaseTest):
         self.ae(buf.read(1000), bytes(buf.ba))
         self.ae(b'', buf.read(10))
         self.ae(write(b'a'*10), 10)
-        numbers = bytes(bytearray(xrange(10)))
+        numbers = bytes(bytearray(range(10)))
         set(numbers, 1, 3, READ)
         self.ae(buf.read(1), b'\x01')
         self.ae(buf.read(10), b'\x02')
diff --git a/src/calibre/srv/tests/web_sockets.py b/src/calibre/srv/tests/web_sockets.py
index af7a01e635..bc16e86a55 100644
--- a/src/calibre/srv/tests/web_sockets.py
+++ b/src/calibre/srv/tests/web_sockets.py
@@ -16,6 +16,7 @@ from calibre.srv.web_socket import (
     PING, PONG, PROTOCOL_ERROR, CONTINUATION, INCONSISTENT_DATA, CONTROL_CODES)
 from calibre.utils.monotonic import monotonic
 from calibre.utils.socket_inheritance import set_socket_inherit
+from polyglot.builtins import range
 
 HANDSHAKE_STR = '''\
 GET / HTTP/1.1\r
@@ -230,7 +231,7 @@ class WebSocketTest(BaseTest):
                 # connection before the client has finished sending all
                 # messages, so ignore failures to send packets.
                 isf_test = partial(simple_test, ignore_send_failures=True)
-                for rsv in xrange(1, 7):
+                for rsv in range(1, 7):
                     isf_test([{'rsv':rsv, 'opcode':BINARY}], [], close_code=PROTOCOL_ERROR, send_close=False)
                 for opcode in (3, 4, 5, 6, 7, 11, 12, 13, 14, 15):
                     isf_test([{'opcode':opcode}], [], close_code=PROTOCOL_ERROR, send_close=False)