本文整理汇总了Python中dbm.ndbm方法的典型用法代码示例。如果您正苦于以下问题：Python dbm.ndbm方法的具体用法？Python dbm.ndbm怎么用？Python dbm.ndbm使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类dbm的用法示例。
在下文中一共展示了dbm.ndbm方法的10个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: test_keys
# 需要导入模块: import dbm [as 别名]
# 或者: from dbm import ndbm [as 别名]
def test_keys(self):
self.d = dbm.ndbm.open(self.filename, 'c')
self.assertEqual(self.d.keys(), [])
self.d['a'] = 'b'
self.d[b'bytes'] = b'data'
self.d['12345678910'] = '019237410982340912840198242'
self.d.keys()
self.assertIn('a', self.d)
self.assertIn(b'a', self.d)
self.assertEqual(self.d[b'bytes'], b'data')
# get() and setdefault() work as in the dict interface
self.assertEqual(self.d.get(b'a'), b'b')
self.assertIsNone(self.d.get(b'xxx'))
self.assertEqual(self.d.get(b'xxx', b'foo'), b'foo')
with self.assertRaises(KeyError):
self.d['xxx']
self.assertEqual(self.d.setdefault(b'xxx', b'foo'), b'foo')
self.assertEqual(self.d[b'xxx'], b'foo')
self.d.close() 示例2: setUp
# 需要导入模块: import dbm [as 别名]
# 或者: from dbm import ndbm [as 别名]
def setUp(self):
self.filename = support.TESTFN
self.d = dbm.ndbm.open(self.filename, 'c')
self.d.close() 示例3: test_keys
# 需要导入模块: import dbm [as 别名]
# 或者: from dbm import ndbm [as 别名]
def test_keys(self):
self.d = dbm.ndbm.open(self.filename, 'c')
self.assertTrue(self.d.keys() == [])
self.d['a'] = 'b'
self.d[b'bytes'] = b'data'
self.d['12345678910'] = '019237410982340912840198242'
self.d.keys()
self.assertIn('a', self.d)
self.assertIn(b'a', self.d)
self.assertEqual(self.d[b'bytes'], b'data')
self.d.close() 示例4: test_modes
# 需要导入模块: import dbm [as 别名]
# 或者: from dbm import ndbm [as 别名]
def test_modes(self):
for mode in ['r', 'rw', 'w', 'n']:
try:
self.d = dbm.ndbm.open(self.filename, mode)
self.d.close()
except error:
self.fail() 示例5: test_context_manager
# 需要导入模块: import dbm [as 别名]
# 或者: from dbm import ndbm [as 别名]
def test_context_manager(self):
with dbm.ndbm.open(self.filename, 'c') as db:
db["ndbm context manager"] = "context manager"
with dbm.ndbm.open(self.filename, 'r') as db:
self.assertEqual(list(db.keys()), [b"ndbm context manager"])
with self.assertRaises(dbm.ndbm.error) as cm:
db.keys()
self.assertEqual(str(cm.exception),
"DBM object has already been closed") 示例6: test_whichdb_ndbm
# 需要导入模块: import dbm [as 别名]
# 或者: from dbm import ndbm [as 别名]
def test_whichdb_ndbm(self):
# Issue 17198: check that ndbm which is referenced in whichdb is defined
db_file = '{}_ndbm.db'.format(_fname)
with open(db_file, 'w'):
self.addCleanup(test.support.unlink, db_file)
self.assertIsNone(self.dbm.whichdb(db_file[:-3])) 示例7: __init__
# 需要导入模块: import dbm [as 别名]
# 或者: from dbm import ndbm [as 别名]
def __init__(self, filename, dbm_class=dbm.ndbm, serializer: Serializer = None, clean: bool = False):
if not serializer:
serializer = PickleSerializer()
self._db = dbm_class.open(filename, 'c')
self._serializer = serializer
if clean:
self.clean() 示例8: test_empty_value
# 需要导入模块: import dbm [as 别名]
# 或者: from dbm import ndbm [as 别名]
def test_empty_value(self):
if dbm.ndbm.library == 'Berkeley DB':
self.skipTest("Berkeley DB doesn't distinguish the empty value "
"from the absent one")
self.d = dbm.ndbm.open(self.filename, 'c')
self.assertEqual(self.d.keys(), [])
self.d['empty'] = ''
self.assertEqual(self.d.keys(), [b'empty'])
self.assertIn(b'empty', self.d)
self.assertEqual(self.d[b'empty'], b'')
self.assertEqual(self.d.get(b'empty'), b'')
self.assertEqual(self.d.setdefault(b'empty'), b'')
self.d.close() 示例9: test_unicode
# 需要导入模块: import dbm [as 别名]
# 或者: from dbm import ndbm [as 别名]
def test_unicode(self):
with dbm.ndbm.open(self.filename, 'c') as db:
db['Unicode key \U0001f40d'] = 'Unicode value \U0001f40d'
with dbm.ndbm.open(self.filename, 'r') as db:
self.assertEqual(list(db.keys()), ['Unicode key \U0001f40d'.encode()])
self.assertTrue('Unicode key \U0001f40d'.encode() in db)
self.assertTrue('Unicode key \U0001f40d' in db)
self.assertEqual(db['Unicode key \U0001f40d'.encode()],
'Unicode value \U0001f40d'.encode())
self.assertEqual(db['Unicode key \U0001f40d'],
'Unicode value \U0001f40d'.encode()) 示例10: test_nonascii_filename
# 需要导入模块: import dbm [as 别名]
# 或者: from dbm import ndbm [as 别名]
def test_nonascii_filename(self):
filename = support.TESTFN_NONASCII
for suffix in ['', '.pag', '.dir', '.db']:
self.addCleanup(support.unlink, filename + suffix)
with dbm.ndbm.open(filename, 'c') as db:
db[b'key'] = b'value'
self.assertTrue(any(os.path.exists(filename + suffix)
for suffix in ['', '.pag', '.dir', '.db']))
with dbm.ndbm.open(filename, 'r') as db:
self.assertEqual(list(db.keys()), [b'key'])
self.assertTrue(b'key' in db)
self.assertEqual(db[b'key'], b'value')