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- Metadata-Version: 2.1
- Name: lazy-object-proxy
- Version: 1.7.1
- Summary: A fast and thorough lazy object proxy.
- Home-page: https://github.com/ionelmc/python-lazy-object-proxy
- Author: Ionel Cristian Mărieș
- Author-email: contact@ionelmc.ro
- License: BSD-2-Clause
- Project-URL: Documentation, https://python-lazy-object-proxy.readthedocs.io/
- Project-URL: Changelog, https://python-lazy-object-proxy.readthedocs.io/en/latest/changelog.html
- Project-URL: Issue Tracker, https://github.com/ionelmc/python-lazy-object-proxy/issues
- Platform: UNKNOWN
- Classifier: Development Status :: 5 - Production/Stable
- Classifier: Intended Audience :: Developers
- Classifier: License :: OSI Approved :: BSD License
- Classifier: Operating System :: Unix
- Classifier: Operating System :: POSIX
- Classifier: Operating System :: Microsoft :: Windows
- Classifier: Programming Language :: Python
- Classifier: Programming Language :: Python :: 3 :: Only
- Classifier: Programming Language :: Python :: 3.6
- Classifier: Programming Language :: Python :: 3.7
- Classifier: Programming Language :: Python :: 3.8
- Classifier: Programming Language :: Python :: 3.9
- Classifier: Programming Language :: Python :: 3.10
- Classifier: Programming Language :: Python :: Implementation :: CPython
- Classifier: Programming Language :: Python :: Implementation :: PyPy
- Classifier: Topic :: Utilities
- Requires-Python: >=3.6
- License-File: LICENSE
- License-File: AUTHORS.rst
- ========
- Overview
- ========
- A fast and thorough lazy object proxy.
- * Free software: BSD 2-Clause License
- Note that this is based on `wrapt`_'s ObjectProxy with one big change: it calls a function the first time the proxy object is
- used, while `wrapt.ObjectProxy` just forwards the method calls to the target object.
- In other words, you use `lazy-object-proxy` when you only have the object way later and you use `wrapt.ObjectProxy` when you
- want to override few methods (by subclassing) and forward everything else to the target object.
- Example::
- import lazy_object_proxy
- def expensive_func():
- from time import sleep
- print('starting calculation')
- # just as example for a very slow computation
- sleep(2)
- print('finished calculation')
- # return the result of the calculation
- return 10
- obj = lazy_object_proxy.Proxy(expensive_func)
- # function is called only when object is actually used
- print(obj) # now expensive_func is called
- print(obj) # the result without calling the expensive_func
- Installation
- ============
- ::
- pip install lazy-object-proxy
- Documentation
- =============
- https://python-lazy-object-proxy.readthedocs.io/
- Development
- ===========
- To run all the tests run::
- tox
- Acknowledgements
- ================
- This project is based on some code from `wrapt`_ as you can see in the git history.
- .. _wrapt: https://github.com/GrahamDumpleton/wrapt
- Changelog
- =========
- 1.7.1 (2021-12-15)
- ------------------
- * Removed most of the Python 2 support code and fixed ``python_requires`` to require at least Python 3.6.
- Note that 1.7.0 has been yanked because it could not install on Python 2.7.
- Installing lazy-object-proxy on Python 2.7 should automatically fall back to the 1.6.0 release now.
- 1.7.0 (2021-12-15)
- ------------------
- * Switched CI to GitHub Actions, this has a couple consequences:
- * Support for Python 2.7 is dropped. You can still install it there but it's not tested anymore and
- Python 2 specific handling will be removed at some point.
- * Linux wheels are now provided in `musllinux` and `manylinux2014` variants.
- * Fixed ``__index__`` to fallback to ``int`` if the wrapped object doesn't have an ``__index__`` method.
- This prevents situations where code using a proxy would otherwise likely just call ``int`` had the object
- not have an ``__index__`` method.
- 1.6.0 (2021-03-22)
- ------------------
- * Added support for async special methods (``__aiter__``, ``__anext__``,
- ``__await__``, ``__aenter__``, ``__aexit__``).
- These are used in the ``async for``, ``await` and ``async with`` statements.
- Note that ``__await__`` returns a wrapper that tries to emulate the crazy
- stuff going on in the ceval loop, so there will be a small performance overhead.
- * Added the ``__resolved__`` property. You can use it to check if the factory has
- been called.
- 1.5.2 (2020-11-26)
- ------------------
- * Added Python 3.9 wheels.
- * Removed Python 2.7 Windows wheels
- (not supported on newest image with Python 3.9).
- 1.5.1 (2020-07-22)
- ------------------
- * Added ARM64 wheels (manylinux2014).
- 1.5.0 (2020-06-05)
- ------------------
- * Added support for ``__fspath__``.
- * Dropped support for Python 3.4.
- 1.4.3 (2019-10-26)
- ------------------
- * Added binary wheels for Python 3.8.
- * Fixed license metadata.
- 1.4.2 (2019-08-22)
- ------------------
- * Included a ``pyproject.toml`` to allow users install the sdist with old python/setuptools, as the
- setuptools-scm dep will be fetched by pip instead of setuptools.
- Fixes `#30 <https://github.com/ionelmc/python-lazy-object-proxy/issues/30>`_.
- 1.4.1 (2019-05-10)
- ------------------
- * Fixed wheels being built with ``-coverage`` cflags. No more issues about bogus ``cext.gcda`` files.
- * Removed useless C file from wheels.
- * Changed ``setup.py`` to use setuptools-scm.
- 1.4.0 (2019-05-05)
- ------------------
- * Fixed ``__mod__`` for the slots backend. Contributed by Ran Benita in
- `#28 <https://github.com/ionelmc/python-lazy-object-proxy/pull/28>`_.
- * Dropped support for Python 2.6 and 3.3. Contributed by "hugovk" in
- `#24 <https://github.com/ionelmc/python-lazy-object-proxy/pull/24>`_.
- 1.3.1 (2017-05-05)
- ------------------
- * Fix broken release (``sdist`` had a broken ``MANIFEST.in``).
- 1.3.0 (2017-05-02)
- ------------------
- * Speed up arithmetic operations involving ``cext.Proxy`` subclasses.
- 1.2.2 (2016-04-14)
- ------------------
- * Added `manylinux <https://www.python.org/dev/peps/pep-0513/>`_ wheels.
- * Minor cleanup in readme.
- 1.2.1 (2015-08-18)
- ------------------
- * Fix a memory leak (the wrapped object would get bogus references). Contributed by Astrum Kuo in
- `#10 <https://github.com/ionelmc/python-lazy-object-proxy/pull/10>`_.
- 1.2.0 (2015-07-06)
- ------------------
- * Don't instantiate the object when __repr__ is called. This aids with debugging (allows one to see exactly in
- what state the proxy is).
- 1.1.0 (2015-07-05)
- ------------------
- * Added support for pickling. The pickled value is going to be the wrapped object *without* any Proxy container.
- * Fixed a memory management issue in the C extension (reference cycles weren't garbage collected due to improper
- handling in the C extension). Contributed by Alvin Chow in
- `#8 <https://github.com/ionelmc/python-lazy-object-proxy/pull/8>`_.
- 1.0.2 (2015-04-11)
- -----------------------------------------
- * First release on PyPI.
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