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Python refactor._detect_future_features方法代碼示例

本文整理匯總了Python中lib2to3.refactor._detect_future_features方法的典型用法代碼示例。如果您正苦於以下問題:Python refactor._detect_future_features方法的具體用法?Python refactor._detect_future_features怎麽用?Python refactor._detect_future_features使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在lib2to3.refactor的用法示例。


在下文中一共展示了refactor._detect_future_features方法的1個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的Python代碼示例。

示例1: test_detect_future_features

# 需要導入模塊: from lib2to3 import refactor [as 別名]
# 或者: from lib2to3.refactor import _detect_future_features [as 別名]
def test_detect_future_features(self):
        run = refactor._detect_future_features
        fs = frozenset
        empty = fs()
        self.assertEqual(run(""), empty)
        self.assertEqual(run("from __future__ import print_function"),
                         fs(("print_function",)))
        self.assertEqual(run("from __future__ import generators"),
                         fs(("generators",)))
        self.assertEqual(run("from __future__ import generators, feature"),
                         fs(("generators", "feature")))
        inp = "from __future__ import generators, print_function"
        self.assertEqual(run(inp), fs(("generators", "print_function")))
        inp ="from __future__ import print_function, generators"
        self.assertEqual(run(inp), fs(("print_function", "generators")))
        inp = "from __future__ import (print_function,)"
        self.assertEqual(run(inp), fs(("print_function",)))
        inp = "from __future__ import (generators, print_function)"
        self.assertEqual(run(inp), fs(("generators", "print_function")))
        inp = "from __future__ import (generators, nested_scopes)"
        self.assertEqual(run(inp), fs(("generators", "nested_scopes")))
        inp = """from __future__ import generators
from __future__ import print_function"""
        self.assertEqual(run(inp), fs(("generators", "print_function")))
        invalid = ("from",
                   "from 4",
                   "from x",
                   "from x 5",
                   "from x im",
                   "from x import",
                   "from x import 4",
                   )
        for inp in invalid:
            self.assertEqual(run(inp), empty)
        inp = "'docstring'\nfrom __future__ import print_function"
        self.assertEqual(run(inp), fs(("print_function",)))
        inp = "'docstring'\n'somng'\nfrom __future__ import print_function"
        self.assertEqual(run(inp), empty)
        inp = "# comment\nfrom __future__ import print_function"
        self.assertEqual(run(inp), fs(("print_function",)))
        inp = "# comment\n'doc'\nfrom __future__ import print_function"
        self.assertEqual(run(inp), fs(("print_function",)))
        inp = "class x: pass\nfrom __future__ import print_function"
        self.assertEqual(run(inp), empty) 
開發者ID:remg427,項目名稱:misp42splunk,代碼行數:46,代碼來源:test_refactor.py


注:本文中的lib2to3.refactor._detect_future_features方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台,相關代碼片段篩選自各路編程大神貢獻的開源項目,源碼版權歸原作者所有,傳播和使用請參考對應項目的License;未經允許,請勿轉載。