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python-future
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v0.10.0
future/__init__.py
77 строк
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Ed Schofield
Bump version to v0.10.0
01 дек 2013, 16:53
01 дек 2013, 16:53
178edba
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""" future: Easy, safe support for Python 2/3 compatibility ======================================================= ``future`` is the missing compatibility layer between Python 2 and Python 3. It allows you to use a single, clean Python 3.x-compatible codebase to support both Python 2 and Python 3 with minimal overhead. Notable projects that use ``future`` for Python 2/3 compatibility are `Mezzanine <http://mezzanine.jupo.org/>`_ and `xlwt-future <https://pypi.python.org/pypi/xlwt-future>`_. It is designed to be used as follows:: from __future__ import (absolute_import, division, print_function, unicode_literals) from future import standard_library from future.builtins import * # or explicit imports: str, int, bytes, # open, super, range, zip, input, etc. followed by predominantly standard, idiomatic Python 3 code that then runs similarly on Python 2.6/2.7 and Python 3.3+. On Python 3, the import lines have zero effect (and zero namespace pollution). On Python 2, ``from future import standard_library`` installs import hooks to allow renamed and moved standard library modules to be imported from their new Py3 locations. On Python 2, the ``from future.builtins import *`` line shadows all builtins with different behaviour in Python 3 versus 2 to provide their Python 3 semantics. Automatic conversion -------------------- An included script called `futurize <http://python-future.org/automatic_conversion.html>`_ aids in converting code (from either Python 2 or Python 3) to code compatible with both platforms. It is similar to ``python-modernize`` but goes further in providing Python 3 compatibility through the use of the backported types and builtin functions in ``future``. Documentation ------------- See: http://python-future.org Also see the docstrings for each of these modules for more info:: - future.standard_library - future.builtins - future.utils Credits ------- :Author: Ed Schofield :Sponsor: Python Charmers Pty Ltd, Australia, and Python Charmers Pte Ltd, Singapore. http://pythoncharmers.com :Others: - The backported ``super()`` and ``range()`` functions are derived from Ryan Kelly's ``magicsuper`` module and Dan Crosta's ``xrange`` module. - The ``futurize`` script uses ``lib2to3`` and fixers from Joe Amenta's ``lib3to2`` and Armin Ronacher's ``python-modernize``. - The ``python_2_unicode_compatible`` decorator is from Django. The ``implements_iterator`` and ``with_metaclass`` decorators are from Jinja2. - Documentation is generated using ``sphinx`` and styled using ``sphinx-bootstrap-theme``. Licensing --------- Copyright 2013 Python Charmers Pty Ltd, Australia. The software is distributed under an MIT licence. See LICENSE.txt. """ # No namespace pollution __all__ = [] __ver_major__ = 0 __ver_minor__ = 10 __ver_patch__ = 0 __ver_sub__ = '' __version__ = "%d.%d.%d%s" % (__ver_major__, __ver_minor__, __ver_patch__, __ver_sub__)