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        "author": "Ryota Suzuki",
        "author_email": "ryouta_suzuki@yahoo.co.jp",
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            "Programming Language :: Python :: 3",
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        "description": "# daisy\n\nThin wrapper of [luigi](https://github.com/spotify/luigi) for utility.\n\n# Features\n\n## Formatted local targets\n\nClasses inheriting `daisy.FormattedLocalTargetBase` is provided\nfor dumping and loading objects by one-liner.\n\n``` python\nimport daisy\nimport pandas as pd\n\ndf = pd.DataFrame({\"a\": [1,2,3], \"b\": [4,5,6]})\ndf\n# =>\n#    a  b\n# 0  1  4\n# 1  2  5\n# 2  3  6\n\ntarg = daisy.CsvTarget(\"./output.csv\")\n\n# dumping\ntarg.dump(df)\n\n# loading\ndf2 = targ.load()\n\ndf2\n# =>\n#    a  b\n# 0  1  4\n# 1  2  5\n# 2  3  6\n\n# `daisy.FormattedLocalTargetBase` also inherits `luigi.LocalTaget`\n# so that original api is also enabled.\nwith targ.open(\"r\") as fd:\n    s = fd.read()\n```\n\n## Default output for task\n\n`daisy.Task` inherits `luigi.Task` and provides default `output` features.\n\nBy setting file extension via `ext` attribute,\ndaisy automatically configure corresponding `FormattedLocalTarget` with default file name.\n\n\n### Single output\n\n``` python\nclass TaskA(daisy.Task):\n    param1 = daisy.Parameter()\n    ext = \"csv\"\n```\n\nis equivalent to:\n\n``` python\nclass TaskA(luigi.Task):\n    param1 = luigi.Parameter()\n\n    def output(self):\n        return daisy.CsvTarget(\"./data/TaskA/TaskA(param1={}).csv\".format(self.param1))\n```\n\n\n### Multiple outputs\n\n``` python\nclass TaskA(daisy.Task):\n    param1 = daisy.Parameter()\n\n    ext = {\n        \"vectors\": \"npy\",\n        \"metadata\": \"json\"\n    }\n```\n\nis equivalent to:\n\n``` python\nclass TaskA(luigi.Task):\n    param1 = luigi.Parameter()\n\n    def output(self):\n        return {\n            \"vectors\": daisy.NpyTarget(\"./data/TaskA/TaskA(param1={}).npy\".format(self.param1)),\n            \"metadata\": daisy.JsonTarget(\"./data/TaskA/TaskA(param1={}).json\".format(self.param1))\n            }\n```\n\nAvailable extension and file types are as follows:\n\n| Target class | Object type | extension |\n| --- | --- | --- |\n| `CsvTarget` | `pandas.DataFrame` | `csv` |\n| `NpyTarget` | `numpy.ndarray` | `npy` |\n| `JsonTarget` | `dict` | `json` |\n| `PickleTarget` | `object` | `pkl` `pickle` |\n| `FeatherTarget` | `pandas.DataFrame` | `feather` |\n\nview [source code](./daisy/formatted_target.py) for detail.\n\n\n## Configuration\n\nFor configuration, edit `[daisy]` section of `luigi.cfg`.\n\n``` INI\n[daisy]\n\n# default output directory\ndata_dir = luigi.Parameter(\"./data\")\n```\n\n\n",
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