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        "classifiers": [
            "Development Status :: 3 - Alpha",
            "Operating System :: OS Independent",
            "Programming Language :: Python :: 3.6",
            "Topic :: Utilities"
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        "description": "pYthon Utilities\r\n================\r\n\r\n\u5b89\u88c5\r\n\r\n::\r\n\r\n    $ pip install yu\r\n\r\nextractors - \u6570\u636e\u63d0\u53d6\r\n---------------------\r\n\r\n\u6570\u636e\u63d0\u53d6\uff0c\u652f\u6301:\r\n\r\n-  Field\r\n\r\n   -  SkipField - \u76f4\u63a5\u8df3\u8fc7\r\n   -  PassField - \u4e0d\u505a\u8f6c\u6362\r\n   -  StringField - \u5b57\u7b26\u4e32\uff0c\u652f\u6301\u957f\u5ea6\u9a8c\u8bc1\r\n   -  IntegerField - \u6574\u6570\uff0c\u652f\u6301\u6700\u5927\u3001\u6700\u5c0f\u503c\u9a8c\u8bc1\r\n   -  FloatField - \u6d6e\u70b9\u6570\r\n   -  DateField - \u65e5\u671f\r\n\r\n-  RowExtractor\r\n-  CSVExtractor\r\n\r\n\u793a\u4f8b\r\n~~~~\r\n\r\ncsv.extract \u7684\u7528\u6cd5:\r\n\r\n.. code:: python\r\n\r\n    import csv\r\n    from yu.extractors import csv as ce\r\n\r\n\r\n    fields = [\r\n        ce.StringField(min_length=2, max_length=4),  # \u59d3\u540d\r\n        ce.SkipField(),  # \u6c11\u65cf\r\n        ce.IntegerField(max_value=150),  # \u5e74\u9f84\r\n        ce.FloatField(min_value=5, max_value=200),  # \u4f53\u91cd\r\n        ce.DateField(),  # \u751f\u65e5\r\n        ce.PassField(),  # \u5907\u6ce8\r\n    ]\r\n\r\n\r\n    with open('data/person.csv') as fp:\r\n        reader = csv.reader(fp)\r\n        for row in ce.extract(reader, fields=fields):\r\n            print(row)\r\n\r\nexcel.extract \u7684\u7528\u6cd5\r\n~~~~~~~~~~~~~~~~~~~~\r\n\r\n.. code:: python\r\n\r\n    import xlrd\r\n    from yu.extractors import excel as ee\r\n\r\n    fields = [\r\n        ee.StringField(min_length=2, max_length=4),  # \u59d3\u540d\r\n        ee.SkipField(),  # \u6c11\u65cf\r\n        ee.IntegerField(max_value=150),  # \u5e74\u9f84\r\n        ee.FloatField(min_value=5, max_value=200),  # \u4f53\u91cd\r\n        ee.DateField(),  # \u751f\u65e5\r\n        ee.PassField(),  # \u5907\u6ce8\r\n    ]\r\n\r\n    book = xlrd.open_workbook('data/person.xlsx')\r\n    sheet = book.sheet_by_name('person')\r\n    for row in ee.extract(sheet, fields=fields):\r\n        print(row)\r\n\r\nutils - \u5176\u4ed6\u5de5\u5177\r\n----------------\r\n\r\n\u5305\u62ec\r\n\r\n-  cached_property - \u4ee3\u7801\u6765\u81ea Django \u9879\u76ee\r\n-  InstanceMeta - \u7c7b\u7684\u81ea\u52a8\u5b9e\u4f8b\u5316\r\n-  Instance - \u7c7b\u7684\u81ea\u52a8\u5b9e\u4f8b\u5316\uff08\u7ee7\u627f\u65b9\u5f0f\uff09\r\n\r\nInstanceMeta \u793a\u4f8b\r\n~~~~~~~~~~~~~~~~~\r\n\r\n.. code:: python\r\n\r\n    from yu.utils import InstanceMeta\r\n\r\n    class Color(metaclass=InstanceMeta, abstract=True):\r\n        def __str__(self):\r\n            return f'{self.name} = {self.value}'\r\n\r\n    class Red(Color):\r\n        name = 'red'\r\n        value = 'FF0000'\r\n\r\n    class Green(Color):\r\n        name = 'green'\r\n        value = '00FF00'\r\n\r\n    print(Red)\r\n    print(Green)\r\n\r\nformula\r\n-------\r\n\r\n\u7528\u6cd5\uff1a\r\n\r\n.. code:: python\r\n\r\n    # \u5b9a\u4e49\u516c\u5f0f\r\n    try:\r\n        \u9762\u79ef\u516c\u5f0f = Formula('\u9762\u79ef = \u957f * \u5bbd', '\u957f\u65b9\u5f62\u9762\u79ef')\r\n    except FormulaError as exc:\r\n        print(exc)\r\n\r\n    # \u8fdb\u884c\u8ba1\u7b97\r\n    context = {\r\n        '\u957f': 16,\r\n        '\u5bbd': 15,\r\n    }\r\n    try:\r\n        \u9762\u79ef\u516c\u5f0f(context)\r\n    except FormulaError as exc:\r\n        print(exc)\r\n\r\n    # \u8bfb\u53d6\u7ed3\u679c\r\n    print(context['\u9762\u79ef'])\r\n\r\n\u4fee\u6539\u8bb0\u5f55\r\n--------\r\n\r\nv0.5.0\r\n\r\n-  2017-12-28 \u6dfb\u52a0 yu.formula\r\n\r\nv0.4.1\r\n\r\n-  2017-12-20 \u5b8c\u5584 yu.extractors, \u5c01\u88c5\u8fd4\u56de\u503c\r\n\r\nv0.4.0\r\n\r\n-  2017-12-15 \u589e\u52a0 argparseutils \u6a21\u5757\uff0c\u652f\u6301 DateType, DatetimeType\r\n\r\nv0.2.2\r\n\r\n-  2017-12-15 \u5b8c\u5584 extractors.excel \u548c extractors.csv\r\n\r\nv0.2.1\r\n\r\n-  2017-12-11 \u53d1\u5e03\u91cc\u589e\u52a0 README.md, data/\\*\r\n\r\nv0.2.0\r\n\r\n-  2017-12-10 \u6dfb\u52a0 yu.extractors.excel\uff0c\u5904\u7406 Excel \u6587\u4ef6\u7684\u6570\u636e\u63d0\u53d6\r\n\r\nv0.1.1\r\n\r\n-  2017-12-09 \u6dfb\u52a0 yu.extractors.csv, \u5904\u7406 CSV \u6587\u4ef6\u7684\u6570\u636e\u63d0\u53d6\r\n",
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