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Schema"],"sub_categories":[],"readme":"lazycontract\n============\n\n### Status\n\n[![TravisCI](https://travis-ci.org/neilisaac/lazycontract.svg)](https://travis-ci.org/neilisaac/lazycontract)\n[![Code Climate](https://codeclimate.com/github/neilisaac/lazycontract/badges/gpa.svg)](https://codeclimate.com/github/neilisaac/lazycontract)\n\nFork the [GitHub project](https://github.com/neilisaac/lazycontract) to contribute!\n\n\n### Get it\n\nAvailable on [PyPI](https://pypi.python.org/pypi/lazycontract):\n\n```\npip install lazycontract\n```\n\n\n### Overview\n\nBase classes:\n\n`StrictContract` only allows the defined attributes\n\n`LazyContract` ignores undefined attributes\n\n`DynamicContract` deserializes undefined attributes, but does not serialize them\n\n\n### Example\n\n```python\nimport json\nimport lazycontract\n\n\n# custom property\n\nclass SloppyCSVProperty(lazycontract.LazyProperty):\n\n    _type = list\n\n    def deserialize(self, obj):\n        return obj.split(\",\") if isinstance(obj, (str, unicode)) else obj\n\n    def serialize(self, obj):\n        return \",\".join(str(item) for item in obj)\n\n\n# custom contract\n\nclass SloppyDocument(lazycontract.LazyContract):\n\n    title = lazycontract.StringProperty(default=\"new document\")\n    header = SloppyCSVProperty()\n    body = lazycontract.ListProperty(SloppyCSVProperty())\n\n\n# serialization\n\ntest1 = SloppyDocument(title=\"hello world\", header=[\"first\", \"second\"], body=[])\ntest1.body.append([1, 2])\ntest1.body.append([3, 4])\n\nprint json.dumps(test1.to_dict()) # {\"body\": [\"1,2\", \"3,4\"], \"header\": \"first,second\", \"title\": \"hello world\"}\n\n\n# deserialization\n\ndata = json.loads('{\"body\": [\"1,2\", \"3,4\"], \"header\": \"first,second\", \"title\": \"hello world\"}')\ntest2 = SloppyDocument(data)\n\nprint test2.title  # hello world\nprint test2.header # [u'first', u'second']\nprint test2.body   # [[u'1', u'2'], [u'3', u'4']]\n\nprint type(test2)           # \u003cclass '__main__.SloppyDocument'\u003e\nprint type(test2.header)    # \u003ctype 'list'\u003e\nprint type(test2.header[0]) # \u003ctype 'unicode'\u003e\n\n```\n\nSee `lazycontract/test_properties.py` for more examples of property usage.\n\n\n### Goals and inspiration\n\n * Provide a simple means to express data contracts in code.\n * Blatantly inspired by [jsonobject](https://github.com/dimagi/jsonobject)'s API\n * Attribute serialization, de-serialization and validation should be trivial to understand and implement\n * Errors in the data or contract should be easy to debug\n * Don't impose a wire format or encoder/decoder\n\n\n### TODO\n\n * lazy deserialization\n * timestamp properties\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fneilisaac%2Flazycontract","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fneilisaac%2Flazycontract","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fneilisaac%2Flazycontract/lists"}