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future: Easy, safe support for Python 2/3 compatibility | ||
======================================================= | ||
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``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. | ||
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It is designed to be used as follows:: | ||
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from __future__ import (absolute_import, division, | ||
print_function, unicode_literals) | ||
from builtins import ( | ||
bytes, dict, int, list, object, range, str, | ||
ascii, chr, hex, input, next, oct, open, | ||
pow, round, super, | ||
filter, map, zip) | ||
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followed by predominantly standard, idiomatic Python 3 code that then runs | ||
similarly on Python 2.6/2.7 and Python 3.3+. | ||
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The imports have no effect on Python 3. On Python 2, they shadow the | ||
corresponding builtins, which normally have different semantics on Python 3 | ||
versus 2, to provide their Python 3 semantics. | ||
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Standard library reorganization | ||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | ||
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``future`` supports the standard library reorganization (PEP 3108) through the | ||
following Py3 interfaces: | ||
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>>> # Top-level packages with Py3 names provided on Py2: | ||
>>> import html.parser | ||
>>> import queue | ||
>>> import tkinter.dialog | ||
>>> import xmlrpc.client | ||
>>> # etc. | ||
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>>> # Aliases provided for extensions to existing Py2 module names: | ||
>>> from future.standard_library import install_aliases | ||
>>> install_aliases() | ||
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>>> from collections import Counter, OrderedDict # backported to Py2.6 | ||
>>> from collections import UserDict, UserList, UserString | ||
>>> import urllib.request | ||
>>> from itertools import filterfalse, zip_longest | ||
>>> from subprocess import getoutput, getstatusoutput | ||
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Automatic conversion | ||
-------------------- | ||
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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``. | ||
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Documentation | ||
------------- | ||
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See: http://python-future.org | ||
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Credits | ||
------- | ||
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:Author: Ed Schofield | ||
:Sponsor: Python Charmers Pty Ltd, Australia, and Python Charmers Pte | ||
Ltd, Singapore. http://pythoncharmers.com | ||
:Others: See docs/credits.rst or http://python-future.org/credits.html | ||
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Licensing | ||
--------- | ||
Copyright 2013-2016 Python Charmers Pty Ltd, Australia. | ||
The software is distributed under an MIT licence. See LICENSE.txt. | ||
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pip |
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Metadata-Version: 2.0 | ||
Name: future | ||
Version: 0.16.0 | ||
Summary: Clean single-source support for Python 3 and 2 | ||
Home-page: https://python-future.org | ||
Author: Ed Schofield | ||
Author-email: ed@pythoncharmers.com | ||
License: MIT | ||
Keywords: future past python3 migration futurize backport six 2to3 modernize pasteurize 3to2 | ||
Platform: UNKNOWN | ||
Classifier: Programming Language :: Python | ||
Classifier: Programming Language :: Python :: 2.6 | ||
Classifier: Programming Language :: Python :: 2.7 | ||
Classifier: Programming Language :: Python :: 3 | ||
Classifier: Programming Language :: Python :: 3.3 | ||
Classifier: Programming Language :: Python :: 3.4 | ||
Classifier: Programming Language :: Python :: 3.5 | ||
Classifier: License :: OSI Approved | ||
Classifier: License :: OSI Approved :: MIT License | ||
Classifier: Development Status :: 4 - Beta | ||
Classifier: Intended Audience :: Developers | ||
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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. | ||
|
||
It is designed to be used as follows:: | ||
|
||
from __future__ import (absolute_import, division, | ||
print_function, unicode_literals) | ||
from builtins import ( | ||
bytes, dict, int, list, object, range, str, | ||
ascii, chr, hex, input, next, oct, open, | ||
pow, round, super, | ||
filter, map, zip) | ||
|
||
followed by predominantly standard, idiomatic Python 3 code that then runs | ||
similarly on Python 2.6/2.7 and Python 3.3+. | ||
|
||
The imports have no effect on Python 3. On Python 2, they shadow the | ||
corresponding builtins, which normally have different semantics on Python 3 | ||
versus 2, to provide their Python 3 semantics. | ||
|
||
|
||
Standard library reorganization | ||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | ||
|
||
``future`` supports the standard library reorganization (PEP 3108) through the | ||
following Py3 interfaces: | ||
|
||
>>> # Top-level packages with Py3 names provided on Py2: | ||
>>> import html.parser | ||
>>> import queue | ||
>>> import tkinter.dialog | ||
>>> import xmlrpc.client | ||
>>> # etc. | ||
|
||
>>> # Aliases provided for extensions to existing Py2 module names: | ||
>>> from future.standard_library import install_aliases | ||
>>> install_aliases() | ||
|
||
>>> from collections import Counter, OrderedDict # backported to Py2.6 | ||
>>> from collections import UserDict, UserList, UserString | ||
>>> import urllib.request | ||
>>> from itertools import filterfalse, zip_longest | ||
>>> from subprocess import getoutput, getstatusoutput | ||
|
||
|
||
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 | ||
|
||
|
||
Credits | ||
------- | ||
|
||
:Author: Ed Schofield | ||
:Sponsor: Python Charmers Pty Ltd, Australia, and Python Charmers Pte | ||
Ltd, Singapore. http://pythoncharmers.com | ||
:Others: See docs/credits.rst or http://python-future.org/credits.html | ||
|
||
|
||
Licensing | ||
--------- | ||
Copyright 2013-2016 Python Charmers Pty Ltd, Australia. | ||
The software is distributed under an MIT licence. See LICENSE.txt. | ||
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