我们从Python开源项目中，提取了以下19个代码示例，用于说明如何使用operator.setslice()。
def test_setslice_cint(self): a = (c_int * 100)(*xrange(1100, 1200)) b = range(1100, 1200) a[32:47] = range(32, 47) self.assertEqual(a[32:47], range(32, 47)) a[32:47] = range(132, 147) self.assertEqual(a[32:47:], range(132, 147)) a[46:31:-1] = range(232, 247) self.assertEqual(a[32:47:1], range(246, 231, -1)) a[32:47] = range(1132, 1147) self.assertEqual(a[:], b) a[32:47:7] = range(3) b[32:47:7] = range(3) self.assertEqual(a[:], b) a[33::-3] = range(12) b[33::-3] = range(12) self.assertEqual(a[:], b) from operator import setslice, setitem # TypeError: int expected instead of str instance self.assertRaises(TypeError, setslice, a, 0, 5, "abcde") self.assertRaises(TypeError, setitem, a, slice(0, 5), "abcde") # TypeError: int expected instead of str instance self.assertRaises(TypeError, setslice, a, 0, 5, ["a", "b", "c", "d", "e"]) self.assertRaises(TypeError, setitem, a, slice(0, 5), ["a", "b", "c", "d", "e"]) # TypeError: int expected instead of float instance self.assertRaises(TypeError, setslice, a, 0, 5, [1, 2, 3, 4, 3.14]) self.assertRaises(TypeError, setitem, a, slice(0, 5), [1, 2, 3, 4, 3.14]) # ValueError: Can only assign sequence of same size self.assertRaises(ValueError, setslice, a, 0, 5, range(32)) self.assertRaises(ValueError, setitem, a, slice(0, 5), range(32))
def test_char_ptr(self): s = "abcdefghijklmnopqrstuvwxyz" dll = CDLL(_ctypes_test.__file__) dll.my_strdup.restype = POINTER(c_char) dll.my_free.restype = None res = dll.my_strdup(s) self.assertEqual(res[:len(s)], s) self.assertEqual(res[:3], s[:3]) self.assertEqual(res[:len(s):], s) self.assertEqual(res[len(s)-1:-1:-1], s[::-1]) self.assertEqual(res[len(s)-1:5:-7], s[:5:-7]) self.assertEqual(res[0:-1:-1], s[0::-1]) import operator self.assertRaises(ValueError, operator.getitem, res, slice(None, None, None)) self.assertRaises(ValueError, operator.getitem, res, slice(0, None, None)) self.assertRaises(ValueError, operator.getitem, res, slice(None, 5, -1)) self.assertRaises(ValueError, operator.getitem, res, slice(-5, None, None)) self.assertRaises(TypeError, operator.setslice, res, 0, 5, u"abcde") self.assertRaises(TypeError, operator.setitem, res, slice(0, 5), u"abcde") dll.my_free(res) dll.my_strdup.restype = POINTER(c_byte) res = dll.my_strdup(s) self.assertEqual(res[:len(s)], range(ord("a"), ord("z")+1)) self.assertEqual(res[:len(s):], range(ord("a"), ord("z")+1)) dll.my_free(res)
def test_wchar_ptr(self): s = u"abcdefghijklmnopqrstuvwxyz\0" dll = CDLL(_ctypes_test.__file__) dll.my_wcsdup.restype = POINTER(c_wchar) dll.my_wcsdup.argtypes = POINTER(c_wchar), dll.my_free.restype = None res = dll.my_wcsdup(s) self.assertEqual(res[:len(s)], s) self.assertEqual(res[:len(s):], s) self.assertEqual(res[len(s)-1:-1:-1], s[::-1]) self.assertEqual(res[len(s)-1:5:-7], s[:5:-7]) import operator self.assertRaises(TypeError, operator.setslice, res, 0, 5, u"abcde") self.assertRaises(TypeError, operator.setitem, res, slice(0, 5), u"abcde") dll.my_free(res) if sizeof(c_wchar) == sizeof(c_short): dll.my_wcsdup.restype = POINTER(c_short) elif sizeof(c_wchar) == sizeof(c_int): dll.my_wcsdup.restype = POINTER(c_int) elif sizeof(c_wchar) == sizeof(c_long): dll.my_wcsdup.restype = POINTER(c_long) else: self.skipTest('Pointers to c_wchar are not supported') res = dll.my_wcsdup(s) tmpl = range(ord("a"), ord("z")+1) self.assertEqual(res[:len(s)-1], tmpl) self.assertEqual(res[:len(s)-1:], tmpl) self.assertEqual(res[len(s)-2:-1:-1], tmpl[::-1]) self.assertEqual(res[len(s)-2:5:-7], tmpl[:5:-7]) dll.my_free(res) ################################################################
def test_setslice(self): a = range(4) self.assertRaises(TypeError, operator.setslice, a) self.assertRaises(TypeError, operator.setslice, a, None, None, None) self.assertTrue(operator.setslice(a, 1, 3, [2, 1]) is None) self.assertTrue(a == [0, 2, 1, 3]) operator.setslice(a, 0, test_support.MAX_Py_ssize_t, []) self.assertTrue(a == [])
def test_wchar_ptr(self): s = u"abcdefghijklmnopqrstuvwxyz\0" dll = CDLL(_ctypes_test.__file__) dll.my_wcsdup.restype = POINTER(c_wchar) dll.my_wcsdup.argtypes = POINTER(c_wchar), dll.my_free.restype = None res = dll.my_wcsdup(s) self.assertEqual(res[:len(s)], s) self.assertEqual(res[:len(s):], s) self.assertEqual(res[len(s)-1:-1:-1], s[::-1]) self.assertEqual(res[len(s)-1:5:-7], s[:5:-7]) import operator self.assertRaises(TypeError, operator.setslice, res, 0, 5, u"abcde") self.assertRaises(TypeError, operator.setitem, res, slice(0, 5), u"abcde") dll.my_free(res) if sizeof(c_wchar) == sizeof(c_short): dll.my_wcsdup.restype = POINTER(c_short) elif sizeof(c_wchar) == sizeof(c_int): dll.my_wcsdup.restype = POINTER(c_int) elif sizeof(c_wchar) == sizeof(c_long): dll.my_wcsdup.restype = POINTER(c_long) else: return res = dll.my_wcsdup(s) tmpl = range(ord("a"), ord("z")+1) self.assertEqual(res[:len(s)-1], tmpl) self.assertEqual(res[:len(s)-1:], tmpl) self.assertEqual(res[len(s)-2:-1:-1], tmpl[::-1]) self.assertEqual(res[len(s)-2:5:-7], tmpl[:5:-7]) dll.my_free(res) ################################################################
