具有堆叠上下文数据的python dict
py-context的Python项目详细描述
具有堆叠上下文数据的python dict
- 自由软件：麻省理工学院许可证
- Github:https://github.com/dealertrack/py-context
安装
您可以使用pip:
安装py-context。$ pip install py-context
示例
>>> context = Context({'user': 'Fred', 'city': 'Bedrock'})
>>> context['user']
'Fred'
>>> context['city']
'Bedrock'
>>> context.push({'user': 'Barney'})
>>> context['user']
'Barney'
>>> context['city']
'Bedrock'
>>> context.pop()
{'user': 'Barney'}
>>> context['user']
'Fred'
上下文也支持信号。 信号处理器可以全局附加：
>>> @context_key_changed.connect ... def handler(sender, context, key, new, old): ... print(key, new, old) >>> context = Context() >>> context['hello'] = 'world' hello world <Missing>
或单个上下文实例：
>>> def handler(sender, context, key, new, old): ... print(key, new, old) >>> context = Context() >>> context_key_changed.connect(handler, sender=context)
支持的信号：
>>> @context_initialized.connect ... def handler(sender, context): ... pass >>> @pre_context_changed.connect ... def handler(sender, context): ... pass >>> @post_context_changed.connect ... def handler(sender, context): ... pass >>> @context_key_changed.connect ... def handler(sender, context, key, new, old): ... pass
另外，ClassSignallingContext可以用于订阅信号 按发件人类，而不是实例：
>>> class TestContext(ClassSignallingContext): ... pass >>> def context_key_changed_handler(sender, context, key, new, old): ... print(key, new, old) >>> _ = context_key_changed.connect(context_key_changed_handler, sender=TestContext) >>> context = Context() >>> class_context = TestContext() >>> context['foo'] = 'bar' >>> class_context['foo'] = 'bar' foo bar <Missing>
测试
要运行测试，您需要首先安装测试要求：
$ make install
然后，要运行测试，您可以使用nosetests或简单地使用makefile命令：
$ nosetests -sv # or $ make test
历史记录
0.3.1（2018-04-11）
- 在Context.push()中添加了对*args、**kwargs的支持。
- 添加了__dir__支持。
0.3.0（2018-02-16）
- 添加了信号支持-context_initialized，pre_context_changed， post_context_changed和context_key_changed。有关示例，请参阅自述文件。
0.2.1（2017-07-28）
- 不包括正在安装的测试
0.2.0（2017-05-11）
- 添加属性支持
- 添加make watch target
0.1.0（2017-03-22）
- pypi上的第一个版本。
学分
最初Context来自Genshi项目。 有关版权声明，请参见LICENSE。
开发领导
- 米罗斯拉夫·舒伯内茨基-https://github.com/miki725
贡献者
- 谢尔坎·霍斯卡-https://github.com/shosca
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