我们从Python开源项目中，提取了以下50个代码示例，用于说明如何使用collections.UserString()。
def to_String_for_subst(s, isinstance=isinstance, str=str, to_String=to_String, BaseStringTypes=BaseStringTypes, SequenceTypes=SequenceTypes, UserString=UserString): # Note that the test cases are sorted by order of probability. if isinstance(s, BaseStringTypes): return s elif isinstance(s, SequenceTypes): l = [] for e in s: l.append(to_String_for_subst(e)) return ' '.join( s ) elif isinstance(s, UserString): # s.data can only be either a unicode or a regular # string. Please see the UserString initializer. return s.data else: return str(s)
def checkequal(self, result, object, methodname, *args): result = self.fixtype(result) object = self.fixtype(object) # we don't fix the arguments, because UserString can't cope with it realresult = getattr(object, methodname)(*args) self.assertEqual( result, realresult )
def checkraises(self, exc, object, methodname, *args): object = self.fixtype(object) # we don't fix the arguments, because UserString can't cope with it self.assertRaises( exc, getattr(object, methodname), *args )
def checkcall(self, object, methodname, *args): object = self.fixtype(object) # we don't fix the arguments, because UserString can't cope with it getattr(object, methodname)(*args)
def setUp(self): # need to keep references to them self.items = [ustr(c) for c in ('a', 'b', 'c')] self.items2 = [ustr(c) for c in ('x', 'y', 'z')] self.letters = [ustr(c) for c in string.ascii_letters] self.s = WeakSet(self.items) self.d = dict.fromkeys(self.items) self.obj = ustr('F') self.fs = WeakSet([self.obj])
def test_contains(self): for c in self.letters: self.assertEqual(c in self.s, c in self.d) # 1 is not weakref'able, but that TypeError is caught by __contains__ self.assertNotIn(1, self.s) self.assertIn(self.obj, self.fs) del self.obj support.gc_collect() self.assertNotIn(ustr('F'), self.fs)
def test_add(self): x = ustr('Q') self.s.add(x) self.assertIn(x, self.s) dup = self.s.copy() self.s.add(x) self.assertEqual(self.s, dup) self.assertRaises(TypeError, self.s.add, []) self.fs.add(Foo()) support.gc_collect() self.assertTrue(len(self.fs) == 1) self.fs.add(self.obj) self.assertTrue(len(self.fs) == 1)
def test_remove(self): x = ustr('a') self.s.remove(x) self.assertNotIn(x, self.s) self.assertRaises(KeyError, self.s.remove, x) self.assertRaises(TypeError, self.s.remove, [])
def test_discard(self): a, q = ustr('a'), ustr('Q') self.s.discard(a) self.assertNotIn(a, self.s) self.s.discard(q) self.assertRaises(TypeError, self.s.discard, [])
def test_weak_destroy_while_iterating(self): # Issue #7105: iterators shouldn't crash when a key is implicitly removed # Create new items to be sure no-one else holds a reference items = [ustr(c) for c in ('a', 'b', 'c')] s = WeakSet(items) it = iter(s) next(it) # Trigger internal iteration # Destroy an item del items[-1] gc.collect() # just in case # We have removed either the first consumed items, or another one self.assertIn(len(list(it)), [len(items), len(items) - 1]) del it # The removal has been committed self.assertEqual(len(s), len(items))
def test_weak_destroy_and_mutate_while_iterating(self): # Issue #7105: iterators shouldn't crash when a key is implicitly removed items = [ustr(c) for c in string.ascii_letters] s = WeakSet(items) @contextlib.contextmanager def testcontext(): try: it = iter(s) next(it) del it # Schedule an item for removal and recreate it u = ustr(str(items.pop())) gc.collect() # just in case yield u finally: it = None # should commit all removals with testcontext() as u: self.assertNotIn(u, s) with testcontext() as u: self.assertRaises(KeyError, s.remove, u) self.assertNotIn(u, s) with testcontext() as u: s.add(u) self.assertIn(u, s) t = s.copy() with testcontext() as u: s.update(t) self.assertEqual(len(s), len(t)) with testcontext() as u: s.clear() self.assertEqual(len(s), 0)
def test_collections_userstuff(self): """ UserDict, UserList, and UserString have been moved to the collections module. """ from collections import UserDict from collections import UserList from collections import UserString self.assertTrue(True)
def test_install_aliases(self): """ Does the install_aliases() interface monkey-patch urllib etc. successfully? """ from future.standard_library import remove_hooks, install_aliases remove_hooks() install_aliases() from collections import Counter, OrderedDict # backported to Py2.6 from collections import UserDict, UserList, UserString # Requires Python dbm support: # import dbm # import dbm.dumb # import dbm.gnu # import dbm.ndbm from itertools import filterfalse, zip_longest from subprocess import check_output # backported to Py2.6 from subprocess import getoutput, getstatusoutput from sys import intern # test_support may not be available (e.g. on Anaconda Py2.6): # import test.support import urllib.error import urllib.parse import urllib.request import urllib.response import urllib.robotparser self.assertTrue('urlopen' in dir(urllib.request))
def __init__(self, cmd, literal=None): collections.UserString.__init__(self, cmd) self.literal = literal
def to_String(s, isinstance=isinstance, str=str, UserString=UserString, BaseStringTypes=BaseStringTypes): if isinstance(s,BaseStringTypes): # Early out when already a string! return s elif isinstance(s, UserString): # s.data can only be either a unicode or a regular # string. Please see the UserString initializer. return s.data else: return str(s)
def checkequal(self, result, object, methodname, *args, **kwargs): result = self.fixtype(result) object = self.fixtype(object) # we don't fix the arguments, because UserString can't cope with it realresult = getattr(object, methodname)(*args, **kwargs) self.assertEqual( result, realresult )
def setUp(self): # need to keep references to them self.items = [ustr(c) for c in ('a', 'b', 'c')] self.items2 = [ustr(c) for c in ('x', 'y', 'z')] self.ab_items = [ustr(c) for c in 'ab'] self.abcde_items = [ustr(c) for c in 'abcde'] self.def_items = [ustr(c) for c in 'def'] self.ab_weakset = WeakSet(self.ab_items) self.abcde_weakset = WeakSet(self.abcde_items) self.def_weakset = WeakSet(self.def_items) self.letters = [ustr(c) for c in string.ascii_letters] self.s = WeakSet(self.items) self.d = dict.fromkeys(self.items) self.obj = ustr('F') self.fs = WeakSet([self.obj])
def test_contains(self): for c in self.letters: self.assertEqual(c in self.s, c in self.d) # 1 is not weakref'able, but that TypeError is caught by __contains__ self.assertNotIn(1, self.s) self.assertIn(self.obj, self.fs) del self.obj self.assertNotIn(ustr('F'), self.fs)
def _str_constructor(loader, node): # store location of multiline string if node.style != '|': return loader.construct_scalar(node) obj = UserString(loader.construct_scalar(node)) obj.start_mark = node.start_mark obj.end_mark = node.end_mark return obj
def checkraises(self, exc, obj, methodname, *args): obj = self.fixtype(obj) # we don't fix the arguments, because UserString can't cope with it with self.assertRaises(exc) as cm: getattr(obj, methodname)(*args) self.assertNotEqual(str(cm.exception), '')
def test_weak_destroy_and_mutate_while_iterating(self): # Issue #7105: iterators shouldn't crash when a key is implicitly removed items = [ustr(c) for c in string.ascii_letters] s = WeakSet(items) @contextlib.contextmanager def testcontext(): try: it = iter(s) # Start iterator yielded = ustr(str(next(it))) # Schedule an item for removal and recreate it u = ustr(str(items.pop())) if yielded == u: # The iterator still has a reference to the removed item, # advance it (issue #20006). next(it) gc.collect() # just in case yield u finally: it = None # should commit all removals with testcontext() as u: self.assertNotIn(u, s) with testcontext() as u: self.assertRaises(KeyError, s.remove, u) self.assertNotIn(u, s) with testcontext() as u: s.add(u) self.assertIn(u, s) t = s.copy() with testcontext() as u: s.update(t) self.assertEqual(len(s), len(t)) with testcontext() as u: s.clear() self.assertEqual(len(s), 0)
def __getattribute__(self, name): # NOTE(mrodden): handle lossy operations that we can't deal with yet # These override the UserString implementation, since UserString # uses our __class__ attribute to try and build a new message # after running the inner data string through the operation. # At that point, we have lost the gettext message id and can just # safely resolve to a string instead. ops = ['capitalize', 'center', 'decode', 'encode', 'expandtabs', 'ljust', 'lstrip', 'replace', 'rjust', 'rstrip', 'strip', 'swapcase', 'title', 'translate', 'upper', 'zfill'] if name in ops: return getattr(self.data, name) else: return _userString.UserString.__getattribute__(self, name)
