def test_varkw_only(self):
# issue11256:
f = self.makeCallable('**c')
self.assertEqualCallArgs(f, '')
self.assertEqualCallArgs(f, 'a=1')
self.assertEqualCallArgs(f, 'a=1, b=2')
self.assertEqualCallArgs(f, 'c=3, **{"a": 1, "b": 2}')
self.assertEqualCallArgs(f, '**collections.UserDict(a=1, b=2)')
self.assertEqualCallArgs(f, 'c=3, **collections.UserDict(a=1, b=2)')
python类UserDict()的实例源码
def __init__(self, dict):
collections.UserDict.__init__(self, dict)
if SCons.Debug.track_instances: logInstanceCreation(self, 'Builder.OverrideWarner')
self.already_warned = None
def __init__(self, *args, **kwargs):
collections.UserDict.__init__(self, *args, **kwargs)
# draw the sprites in the dict
def update_dict(self, *args, **kwargs):
collections.UserDict.update(self, *args, **kwargs)
def test_compat_unpickle(self):
# xrange(1, 7)
pickled = b'\x80\x02c__builtin__\nxrange\nK\x01K\x07K\x01\x87R.'
unpickled = self.loads(pickled)
self.assertIs(type(unpickled), range)
self.assertEqual(unpickled, range(1, 7))
self.assertEqual(list(unpickled), [1, 2, 3, 4, 5, 6])
# reduce
pickled = b'\x80\x02c__builtin__\nreduce\n.'
self.assertIs(self.loads(pickled), functools.reduce)
# whichdb.whichdb
pickled = b'\x80\x02cwhichdb\nwhichdb\n.'
self.assertIs(self.loads(pickled), dbm.whichdb)
# Exception(), StandardError()
for name in (b'Exception', b'StandardError'):
pickled = (b'\x80\x02cexceptions\n' + name + b'\nU\x03ugh\x85R.')
unpickled = self.loads(pickled)
self.assertIs(type(unpickled), Exception)
self.assertEqual(str(unpickled), 'ugh')
# UserDict.UserDict({1: 2}), UserDict.IterableUserDict({1: 2})
for name in (b'UserDict', b'IterableUserDict'):
pickled = (b'\x80\x02(cUserDict\n' + name +
b'\no}U\x04data}K\x01K\x02ssb.')
unpickled = self.loads(pickled)
self.assertIs(type(unpickled), collections.UserDict)
self.assertEqual(unpickled, collections.UserDict({1: 2}))
def test_init(self):
for kw in 'self', 'other', 'iterable':
self.assertEqual(list(collections.UserDict(**{kw: 42}).items()),
[(kw, 42)])
self.assertEqual(list(collections.UserDict({}, dict=42).items()),
[('dict', 42)])
self.assertEqual(list(collections.UserDict({}, dict=None).items()),
[('dict', None)])
with self.assertWarnsRegex(PendingDeprecationWarning, "'dict'"):
self.assertEqual(list(collections.UserDict(dict={'a': 42}).items()),
[('a', 42)])
self.assertRaises(TypeError, collections.UserDict, 42)
self.assertRaises(TypeError, collections.UserDict, (), ())
self.assertRaises(TypeError, collections.UserDict.__init__)
def test_fromkeys(self):
TestMappingProtocol.test_fromkeys(self)
class mydict(self.type2test):
def __new__(cls):
return collections.UserDict()
ud = mydict.fromkeys('ab')
self.assertEqual(ud, {'a':None, 'b':None})
self.assertIsInstance(ud, collections.UserDict)
def test_setting_dict_to_invalid(self):
self.cannot_set_attr(self.b, '__dict__', None, TypeError)
from collections import UserDict
d = UserDict({'known_attr': 7})
self.cannot_set_attr(self.fi.a.__func__, '__dict__', d, TypeError)
def test_varkw_only(self):
# issue11256:
f = self.makeCallable('**c')
self.assertEqualCallArgs(f, '')
self.assertEqualCallArgs(f, 'a=1')
self.assertEqualCallArgs(f, 'a=1, b=2')
self.assertEqualCallArgs(f, 'c=3, **{"a": 1, "b": 2}')
self.assertEqualCallArgs(f, '**collections.UserDict(a=1, b=2)')
self.assertEqualCallArgs(f, 'c=3, **collections.UserDict(a=1, b=2)')
def dump(self):
"""Return the JSON representaion of config."""
import json
def _json_default(v):
# How to encode non-standard objects
if isinstance(v, UserDict):
return v.data
else:
return str(v)
# Work on copy of CONFIG but with unused top-level elements removed.
#
config = {k: v for k,v in self.items() if v}
return json.dumps(config, indent=INDENT, sort_keys=SORT, default=_json_default)
def test_fromkeys(self):
TestMappingProtocol.test_fromkeys(self)
class mydict(self.type2test):
def __new__(cls):
return collections.UserDict()
ud = mydict.fromkeys('ab')
self.assertEqual(ud, {'a':None, 'b':None})
self.assertIsInstance(ud, collections.UserDict)
def test_dotty_type(self):
# self.assertIsInstance(self.dotty, dict)
self.assertIsInstance(self.dotty, Mapping)
self.assertIsInstance(self.dotty, UserDict)
self.assertIsInstance(self.dotty, Dotty)
def test_work_with_not_dotty_dict_like_objects(self):
# Assume dict-like objects does not support dot notation
self.dotty['already.exist.custom'] = UserDict({
'not_dotty': {
'user_dict': 'I am deeply nested user dict value'
}
})
# Accessing not existing key from dict-like object should raise KeyError
self.assertRaises(KeyError, self.dotty['already.exist.custom.key_value'])
# One can access not Dotty dict-like object with dot notation
self.assertEqual(self.dotty['already.exist.custom.not_dotty.user_dict'],
'I am deeply nested user dict value')
# one can add new key to not dotty dict-like object with dot notation
self.dotty['already.exist.custom.not_dotty.new_key'] = 'new key inside not dotty dict'
self.assertEqual(
self.dotty['already.exist.custom'],
{
'not_dotty': {
'user_dict': 'I am deeply nested user dict value',
'new_key': 'new key inside not dotty dict',
}
}
)
def test_fromkeys(self):
TestMappingProtocol.test_fromkeys(self)
class mydict(self.type2test):
def __new__(cls):
return collections.UserDict()
ud = mydict.fromkeys('ab')
self.assertEqual(ud, {'a':None, 'b':None})
self.assertIsInstance(ud, collections.UserDict)
def test_varkw(self):
f = self.makeCallable('a, b=1, **c')
self.assertEqualCallArgs(f, 'a=2')
self.assertEqualCallArgs(f, '2, b=3, c=4')
self.assertEqualCallArgs(f, 'b=3, a=2, c=4')
self.assertEqualCallArgs(f, 'c=4, **{"a":2, "b":3}')
self.assertEqualCallArgs(f, '2, c=4, **{"b":3}')
self.assertEqualCallArgs(f, 'b=2, **{"a":3, "c":4}')
self.assertEqualCallArgs(f, '**collections.UserDict(a=2, b=3, c=4)')
self.assertEqualCallArgs(f, '2, c=4, **collections.UserDict(b=3)')
self.assertEqualCallArgs(f, 'b=2, **collections.UserDict(a=3, c=4)')
def test_varkw_only(self):
# issue11256:
f = self.makeCallable('**c')
self.assertEqualCallArgs(f, '')
self.assertEqualCallArgs(f, 'a=1')
self.assertEqualCallArgs(f, 'a=1, b=2')
self.assertEqualCallArgs(f, 'c=3, **{"a": 1, "b": 2}')
self.assertEqualCallArgs(f, '**collections.UserDict(a=1, b=2)')
self.assertEqualCallArgs(f, 'c=3, **collections.UserDict(a=1, b=2)')
def __init__(self, dict):
collections.UserDict.__init__(self, dict)
if SCons.Debug.track_instances: logInstanceCreation(self, 'Builder.OverrideWarner')
self.already_warned = None
def test_fromkeys(self):
self.assertEqual(self.type2test.fromkeys('abc'), {'a':None, 'b':None, 'c':None})
d = self._empty_mapping()
self.assertTrue(not(d.fromkeys('abc') is d))
self.assertEqual(d.fromkeys('abc'), {'a':None, 'b':None, 'c':None})
self.assertEqual(d.fromkeys((4,5),0), {4:0, 5:0})
self.assertEqual(d.fromkeys([]), {})
def g():
yield 1
self.assertEqual(d.fromkeys(g()), {1:None})
self.assertRaises(TypeError, {}.fromkeys, 3)
class dictlike(self.type2test): pass
self.assertEqual(dictlike.fromkeys('a'), {'a':None})
self.assertEqual(dictlike().fromkeys('a'), {'a':None})
self.assertTrue(dictlike.fromkeys('a').__class__ is dictlike)
self.assertTrue(dictlike().fromkeys('a').__class__ is dictlike)
self.assertTrue(type(dictlike.fromkeys('a')) is dictlike)
class mydict(self.type2test):
def __new__(cls):
return collections.UserDict()
ud = mydict.fromkeys('ab')
self.assertEqual(ud, {'a':None, 'b':None})
self.assertIsInstance(ud, collections.UserDict)
self.assertRaises(TypeError, dict.fromkeys)
class Exc(Exception): pass
class baddict1(self.type2test):
def __init__(self):
raise Exc()
self.assertRaises(Exc, baddict1.fromkeys, [1])
class BadSeq(object):
def __iter__(self):
return self
def __next__(self):
raise Exc()
self.assertRaises(Exc, self.type2test.fromkeys, BadSeq())
class baddict2(self.type2test):
def __setitem__(self, key, value):
raise Exc()
self.assertRaises(Exc, baddict2.fromkeys, [1])
def test_fromkeys(self):
self.assertEqual(dict.fromkeys('abc'), {'a':None, 'b':None, 'c':None})
d = {}
self.assertIsNot(d.fromkeys('abc'), d)
self.assertEqual(d.fromkeys('abc'), {'a':None, 'b':None, 'c':None})
self.assertEqual(d.fromkeys((4,5),0), {4:0, 5:0})
self.assertEqual(d.fromkeys([]), {})
def g():
yield 1
self.assertEqual(d.fromkeys(g()), {1:None})
self.assertRaises(TypeError, {}.fromkeys, 3)
class dictlike(dict): pass
self.assertEqual(dictlike.fromkeys('a'), {'a':None})
self.assertEqual(dictlike().fromkeys('a'), {'a':None})
self.assertIsInstance(dictlike.fromkeys('a'), dictlike)
self.assertIsInstance(dictlike().fromkeys('a'), dictlike)
class mydict(dict):
def __new__(cls):
return collections.UserDict()
ud = mydict.fromkeys('ab')
self.assertEqual(ud, {'a':None, 'b':None})
self.assertIsInstance(ud, collections.UserDict)
self.assertRaises(TypeError, dict.fromkeys)
class Exc(Exception): pass
class baddict1(dict):
def __init__(self):
raise Exc()
self.assertRaises(Exc, baddict1.fromkeys, [1])
class BadSeq(object):
def __iter__(self):
return self
def __next__(self):
raise Exc()
self.assertRaises(Exc, dict.fromkeys, BadSeq())
class baddict2(dict):
def __setitem__(self, key, value):
raise Exc()
self.assertRaises(Exc, baddict2.fromkeys, [1])
# test fast path for dictionary inputs
d = dict(zip(range(6), range(6)))
self.assertEqual(dict.fromkeys(d, 0), dict(zip(range(6), [0]*6)))
def test_missing(self):
# Make sure UserDict doesn't have a __missing__ method
self.assertEqual(hasattr(collections.UserDict, "__missing__"), False)
# Test several cases:
# (D) subclass defines __missing__ method returning a value
# (E) subclass defines __missing__ method raising RuntimeError
# (F) subclass sets __missing__ instance variable (no effect)
# (G) subclass doesn't define __missing__ at a all
class D(collections.UserDict):
def __missing__(self, key):
return 42
d = D({1: 2, 3: 4})
self.assertEqual(d[1], 2)
self.assertEqual(d[3], 4)
self.assertNotIn(2, d)
self.assertNotIn(2, d.keys())
self.assertEqual(d[2], 42)
class E(collections.UserDict):
def __missing__(self, key):
raise RuntimeError(key)
e = E()
try:
e[42]
except RuntimeError as err:
self.assertEqual(err.args, (42,))
else:
self.fail("e[42] didn't raise RuntimeError")
class F(collections.UserDict):
def __init__(self):
# An instance variable __missing__ should have no effect
self.__missing__ = lambda key: None
collections.UserDict.__init__(self)
f = F()
try:
f[42]
except KeyError as err:
self.assertEqual(err.args, (42,))
else:
self.fail("f[42] didn't raise KeyError")
class G(collections.UserDict):
pass
g = G()
try:
g[42]
except KeyError as err:
self.assertEqual(err.args, (42,))
else:
self.fail("g[42] didn't raise KeyError")
