Package org.python.modules._collections
Class PyDefaultDict
java.lang.Object
org.python.core.PyObject
org.python.core.AbstractDict
org.python.core.PyDictionary
org.python.modules._collections.PyDefaultDict
- All Implemented Interfaces:
Serializable
,ConcurrentMap
,Map
,Traverseproc
- Direct Known Subclasses:
PyDefaultDictDerived
PyDefaultDict - This is a subclass of the builtin dict(PyDictionary) class. It supports
one additional method __missing__ and adds one writable instance variable
defaultFactory. The remaining functionality is the same as for the dict class.
collections.defaultdict([defaultFactory[, ...]]) - returns a new dictionary-like
object. The first argument provides the initial value for the defaultFactory attribute;
it defaults to None. All remaining arguments are treated the same as if they were
passed to the dict constructor, including keyword arguments.
- See Also:
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Nested Class Summary
Nested classes/interfaces inherited from class org.python.core.PyObject
PyObject.ConversionException
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Field Summary
Fields inherited from class org.python.core.PyObject
gcMonitorGlobal
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Constructor Summary
ConstructorDescriptionPyDefaultDict
(PyType subtype) PyDefaultDict
(PyType subtype, Map<PyObject, PyObject> map) -
Method Summary
Modifier and TypeMethodDescription__finditem__
(PyObject key) Very similar to the standard Python __getitem__ method.__missing__
(PyObject key) Used for pickling.copy()
Return a shallow copy of the dictionary.void
Return this[key] if the key exists in the mapping, defaultObj is returned otherwise.getMap()
boolean
Optional operation.void
setDefaultFactory
(PyObject value) toString()
int
Traverses all directly containedPyObject
s.Methods inherited from class org.python.core.PyDictionary
__cmp__, __contains__, __delitem__, __eq__, __finditem__, __iter__, __len__, __ne__, __nonzero__, __setitem__, clear, containsKey, containsValue, entrySet, equals, fromkeys, fromkeys, get, get, has_key, hashCode, isEmpty, isMappingType, isSequenceType, items, iteritems, iterkeys, itervalues, keys, keySet, merge, mergeFromKeys, mergeFromSeq, pop, pop, popitem, put, putAll, putIfAbsent, pyKeySet, remove, remove, replace, replace, setdefault, setdefault, size, update, updateCommon, values, viewitems, viewkeys, viewvalues
Methods inherited from class org.python.core.PyObject
__abs__, __add__, __and__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __call__, __coerce__, __coerce_ex__, __complex__, __delattr__, __delattr__, __delete__, __delitem__, __delslice__, __delslice__, __dir__, __div__, __divmod__, __ensure_finalizer__, __findattr__, __findattr__, __findattr_ex__, __finditem__, __float__, __floordiv__, __format__, __ge__, __get__, __getattr__, __getattr__, __getitem__, __getitem__, __getnewargs__, __getslice__, __getslice__, __gt__, __hash__, __hex__, __iadd__, __iand__, __idiv__, __idivmod__, __ifloordiv__, __ilshift__, __imod__, __imul__, __index__, __int__, __invert__, __ior__, __ipow__, __irshift__, __isub__, __iternext__, __itruediv__, __ixor__, __le__, __long__, __lshift__, __lt__, __mod__, __mul__, __neg__, __not__, __oct__, __or__, __pos__, __pow__, __pow__, __radd__, __rand__, __rdiv__, __rdivmod__, __reduce_ex__, __reduce_ex__, __repr__, __rfloordiv__, __rlshift__, __rmod__, __rmul__, __ror__, __rpow__, __rrshift__, __rshift__, __rsub__, __rtruediv__, __rxor__, __set__, __setattr__, __setattr__, __setitem__, __setitem__, __setslice__, __setslice__, __str__, __sub__, __tojava__, __truediv__, __trunc__, __unicode__, __xor__, _add, _and, _callextra, _cmp, _div, _divmod, _doget, _doget, _doset, _eq, _floordiv, _ge, _gt, _iadd, _iand, _idiv, _idivmod, _ifloordiv, _ilshift, _imod, _imul, _in, _ior, _ipow, _irshift, _is, _isnot, _isub, _itruediv, _ixor, _jcall, _jcallexc, _jthrow, _le, _lshift, _lt, _mod, _mul, _ne, _notin, _or, _pow, _rshift, _sub, _truediv, _xor, asDouble, asIndex, asIndex, asInt, asInt, asIterable, asLong, asLong, asName, asName, asString, asString, asStringOrNull, asStringOrNull, bit_length, conjugate, delDict, delType, dispatch__init__, fastGetClass, fastGetDict, getDict, getType, implementsDescrDelete, implementsDescrGet, implementsDescrSet, invoke, invoke, invoke, invoke, invoke, invoke, isCallable, isDataDescr, isIndex, isInteger, isNumberType, noAttributeError, object___subclasshook__, readonlyAttributeError, setDict, setType
Methods inherited from interface java.util.concurrent.ConcurrentMap
compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, replaceAll
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Field Details
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TYPE
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Constructor Details
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PyDefaultDict
public PyDefaultDict() -
PyDefaultDict
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PyDefaultDict
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Method Details
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getMap
- Overrides:
getMap
in classPyDictionary
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__missing__
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__reduce__
Description copied from class:PyObject
Used for pickling. Default implementation calls object___reduce__.- Overrides:
__reduce__
in classPyObject
- Returns:
- a tuple of (class, tuple)
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copy
Description copied from class:PyDictionary
Return a shallow copy of the dictionary.- Overrides:
copy
in classPyDictionary
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toString
- Overrides:
toString
in classPyDictionary
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getDefaultFactory
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setDefaultFactory
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delDefaultFactory
public void delDefaultFactory() -
__finditem__
Description copied from class:PyObject
Very similar to the standard Python __getitem__ method. Instead of throwing a KeyError if the item isn't found, this just returns null. Classes that wish to implement __getitem__ should override this method instead (with the appropriate semantics.- Overrides:
__finditem__
in classPyDictionary
- Parameters:
key
- the key to lookup in this container- Returns:
- the value corresponding to key or null if key is not found
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get
Description copied from class:PyDictionary
Return this[key] if the key exists in the mapping, defaultObj is returned otherwise.- Overrides:
get
in classPyDictionary
- Parameters:
key
- the key to lookup in the dictionary.defaultObj
- the value to return if the key does not exists in the mapping.
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traverse
Description copied from interface:Traverseproc
Traverses all directly containedPyObject
s. Like in CPython,arg
must be passed unmodified tovisit
as its second parameter. IfVisitproc.visit(PyObject, Object)
returns nonzero, this return value must be returned immediately by traverse.Visitproc.visit(PyObject, Object)
must not be called with anull
PyObject-argument.- Specified by:
traverse
in interfaceTraverseproc
- Overrides:
traverse
in classPyDictionary
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refersDirectlyTo
Description copied from interface:Traverseproc
Optional operation. Should only be implemented if it is more efficient than callingTraverseproc.traverse(Visitproc, Object)
with a visitproc that just watches out forob
. Must returnfalse
ifob
isnull
.- Specified by:
refersDirectlyTo
in interfaceTraverseproc
- Overrides:
refersDirectlyTo
in classPyDictionary
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