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Changelog for six
=================

This file lists the changes in each six version.

1.15.0
------

- Pull request #331: Optimize `six.ensure_str` and `six.ensure_binary`.

1.14.0
------

- Issue #288, pull request #289: Add `six.assertNotRegex`.

- Issue #317: `six.moves._dummy_thread` now points to the `_thread` module on
  Python 3.9+. Python 3.7 and later requires threading and deprecated the
  `_dummy_thread` module.

- Issue #308, pull request #314: Remove support for Python 2.6 and Python 3.2.

- Issue #250, issue #165, pull request #251: `six.wraps` now ignores missing
  attributes. This follows the Python 3.2+ standard library behavior.

1.13.0
------

- Issue #298, pull request #299: Add `six.moves.dbm_ndbm`.

- Issue #155: Add `six.moves.collections_abc`, which aliases the `collections`
  module on Python 2-3.2 and the `collections.abc` on Python 3.3 and greater.

- Pull request #304: Re-add distutils fallback in `setup.py`.

- Pull request #305: On Python 3.7, `with_metaclass` supports classes using PEP
  560 features.

1.12.0
------

- Issue #259, pull request #260: `six.add_metaclass` now preserves
  `__qualname__` from the original class.

- Pull request #204: Add `six.ensure_binary`, `six.ensure_text`, and
  `six.ensure_str`.

1.11.0
------

- Pull request #178: `with_metaclass` now properly proxies `__prepare__` to the
  underlying metaclass.

- Pull request #191: Allow `with_metaclass` to work with metaclasses implemented
  in C.

- Pull request #203: Add parse_http_list and parse_keqv_list to moved
  urllib.request.

- Pull request #172 and issue #171: Add unquote_to_bytes to moved urllib.parse.

- Pull request #167: Add `six.moves.getoutput`.

- Pull request #80: Add `six.moves.urllib_parse.splitvalue`.

- Pull request #75: Add `six.moves.email_mime_image`.

- Pull request #72: Avoid creating reference cycles through tracebacks in
  `reraise`.

1.10.0
------

- Issue #122: Improve the performance of `six.int2byte` on Python 3.

- Pull request #55 and issue #99: Don't add the `winreg` module to `six.moves`
  on non-Windows platforms.

- Pull request #60 and issue #108: Add `six.moves.getcwd` and
  `six.moves.getcwdu`.

- Pull request #64: Add `create_unbound_method` to create unbound methods.

1.9.0
-----

- Issue #106: Support the `flush` parameter to `six.print_`.

- Pull request #48 and issue #15: Add the `python_2_unicode_compatible`
  decorator.

- Pull request #57 and issue #50: Add several compatibility methods for unittest
  assertions that were renamed between Python 2 and 3.

- Issue #105 and pull request #58: Ensure `six.wraps` respects the *updated* and
  *assigned* arguments.

- Issue #102: Add `raise_from` to abstract out Python 3's raise from syntax.

- Issue #97: Optimize `six.iterbytes` on Python 2.

- Issue #98: Fix `six.moves` race condition in multi-threaded code.

- Pull request #51: Add `six.view(keys|values|itmes)`, which provide dictionary
  views on Python 2.7+.

- Issue #112: `six.moves.reload_module` now uses the importlib module on
  Python 3.4+.

1.8.0
-----

- Issue #90: Add `six.moves.shlex_quote`.

- Issue #59: Add `six.moves.intern`.

- Add `six.urllib.parse.uses_(fragment|netloc|params|query|relative)`.

- Issue #88: Fix add_metaclass when the class has `__slots__` containing
  `__weakref__` or `__dict__`.

- Issue #89: Make six use absolute imports.

- Issue #85: Always accept *updated* and *assigned* arguments for `wraps()`.

- Issue #86: In `reraise()`, instantiate the exception if the second argument is
  `None`.

- Pull request #45: Add `six.moves.email_mime_nonmultipart`.

- Issue #81: Add `six.urllib.request.splittag` mapping.

- Issue #80: Add `six.urllib.request.splituser` mapping.

1.7.3
-----

- Issue #77: Fix import six on Python 3.4 with a custom loader.

- Issue #74: `six.moves.xmlrpc_server` should map to `SimpleXMLRPCServer` on Python
  2 as documented not `xmlrpclib`.

1.7.2
-----

- Issue #72: Fix installing on Python 2.

1.7.1
-----

- Issue #71: Make the six.moves meta path importer handle reloading of the six
  module gracefully.

1.7.0
-----

- Pull request #30: Implement six.moves with a PEP 302 meta path hook.

- Pull request #32: Add six.wraps, which is like functools.wraps but always sets
  the __wrapped__ attribute.

- Pull request #35: Improve add_metaclass, so that it doesn't end up inserting
  another class into the hierarchy.

- Pull request #34: Add import mappings for dummy_thread.

- Pull request #33: Add import mappings for UserDict and UserList.

- Pull request #31: Select the implementations of dictionary iterator routines
  at import time for a 20% speed boost.

1.6.1
-----

- Raise an AttributeError for six.moves.X when X is a module not available in
  the current interpreter.

1.6.0
-----

- Raise an AttributeError for every attribute of unimportable modules.

- Issue #56: Make the fake modules six.moves puts into sys.modules appear not to
  have a __path__ unless they are loaded.

- Pull request #28: Add support for SplitResult.

- Issue #55: Add move mapping for xmlrpc.server.

- Pull request #29: Add move for urllib.parse.splitquery.

1.5.2
-----

- Issue #53: Make the fake modules six.moves puts into sys.modules appear not to
  have a __name__ unless they are loaded.

1.5.1
-----

- Issue #51: Hack around the Django autoreloader after recent six.moves changes.

1.5.0
-----

- Removed support for Python 2.4. This is because py.test no longer supports
  2.4.

- Fix various import problems including issues #19 and #41. six.moves modules
  are now lazy wrappers over the underlying modules instead of the actual
  modules themselves.

- Issue #49: Add six.moves mapping for tkinter.ttk.

- Pull request #24: Add __dir__ special method to six.moves modules.

- Issue #47: Fix add_metaclass on classes with a string for the __slots__
  variable.

- Issue #44: Fix interpretation of backslashes on Python 2 in the u() function.

- Pull request #21: Add import mapping for urllib's proxy_bypass function.

- Issue #43: Add import mapping for the Python 2 xmlrpclib module.

- Issue #39: Add import mapping for the Python 2 thread module.

- Issue #40: Add import mapping for the Python 2 gdbm module.

- Issue #35: On Python versions less than 2.7, print_ now encodes unicode
  strings when outputing to standard streams. (Python 2.7 handles this
  automatically.)

1.4.1
-----

- Issue #32: urllib module wrappings don't work when six is not a toplevel file.

1.4.0
-----

- Issue #31: Add six.moves mapping for UserString.

- Pull request #12: Add six.add_metaclass, a decorator for adding a metaclass to
  a class.

- Add six.moves.zip_longest and six.moves.filterfalse, which correspond
  respectively to itertools.izip_longest and itertools.ifilterfalse on Python 2
  and itertools.zip_longest and itertools.filterfalse on Python 3.

- Issue #25: Add the unichr function, which returns a string for a Unicode
  codepoint.

- Issue #26: Add byte2int function, which complements int2byte.

- Add a PY2 constant with obvious semantics.

- Add helpers for indexing and iterating over bytes: iterbytes and indexbytes.

- Add create_bound_method() wrapper.

- Issue #23: Allow multiple base classes to be passed to with_metaclass.

- Issue #24: Add six.moves.range alias. This exactly the same as the current
  xrange alias.

- Pull request #5: Create six.moves.urllib, which contains abstractions for a
  bunch of things which are in urllib in Python 3 and spread out across urllib,
  urllib2, and urlparse in Python 2.

1.3.0
-----

- Issue #21: Add methods to access the closure and globals of a function.

- In six.iter(items/keys/values/lists), passed keyword arguments through to the
  underlying method.

- Add six.iterlists().

- Issue #20: Fix tests if tkinter is not available.

- Issue #17: Define callable to be builtin callable when it is available again
  in Python 3.2+.

- Issue #16: Rename Python 2 exec_'s arguments, so casually calling exec_ with
  keyword arguments will raise.

- Issue #14: Put the six.moves package in sys.modules based on the name six is
  imported under.

- Fix Jython detection.

- Pull request #4: Add email_mime_multipart, email_mime_text, and
  email_mime_base to six.moves.

1.2.0
-----

- Issue #13: Make iterkeys/itervalues/iteritems return iterators on Python 3
  instead of iterables.

- Issue #11: Fix maxsize support on Jython.

- Add six.next() as an alias for six.advance_iterator().

- Use the builtin next() function for advance_iterator() where is available
  (2.6+), not just Python 3.

- Add the Iterator class for writing portable iterators.

1.1.0
-----

- Add the int2byte function.

- Add compatibility mappings for iterators over the keys, values, and items of a
  dictionary.

- Fix six.MAXSIZE on platforms where sizeof(long) != sizeof(Py_ssize_t).

- Issue #3: Add six.moves mappings for filter, map, and zip.

1.0.0
-----

- Issue #2: u() on Python 2.x now resolves unicode escapes.

- Expose an API for adding mappings to six.moves.

1.0 beta 1
----------

- Reworked six into one .py file.  This breaks imports.  Please tell me if you
  are interested in an import compatibility layer.