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memoized_property
.. image:: https://badge.fury.io/py/memoized-property.png
:target: http://badge.fury.io/py/memoized-property
.. image:: https://travis-ci.org/estebistec/python-memoized-property.png?branch=master
:target: https://travis-ci.org/estebistec/python-memoized-property
.. image:: https://pypip.in/d/memoized-property/badge.png
:target: https://crate.io/packages/memoized-property?version=latest
A simple python decorator for defining properties that only run their fget function once.
- Free software: BSD license
What?
A Python property that only calls its fget
function one time. How many times have you written
this code (or similar)?
::
def class C(object):
@property
def name(self):
if not hasattr(self, '_name'):
self._name = some_expensive_load()
return self._name
I've written it just enough times to be annoyed enough to capture this module. The result is this::
from memoized_property import memoized_property
def class C(object):
@memoized_property
def name(self):
# Boilerplate guard conditional avoided, but this is still only called once
return some_expensive_load()
Why?
I couldn't find a pre-existing version of this on PyPI. I found one other on GitHub,
https://github.com/ytyng/python-memoized-property, but it was not published to PyPI.
History
1.0.3 (2016-09-28)
++++++++++++++++++
- Build universal wheels
- Support Python 3.4, 3.5
1.0.2 (2014-05-02)
++++++++++++++++++
1.0.1 (2014-01-01)
++++++++++++++++++
- Added python 3.2 compatability
1.0.0 (2013-12-26)
++++++++++++++++++