# Obiekty słownika

type PyDictObject

  Ten podtyp `PyObject` reprezentuje obiekt słownika Pythona.

PyTypeObject PyDict_Type
  Część stabilnego ABI.

  Ta instancja `PyTypeObject` reprezentuje typ słownika Pythona. Jest to ten sam obiekt, co `dict` w warstwie Pythona.

int PyDict_Check(PyObject *p)

  Zwraca wartość true, jeśli p jest obiektem typu dict lub instancją podtypu typu dict. Funkcja ta zawsze kończy się powodzeniem.

int PyDict_CheckExact(PyObject *p)

  Zwraca wartość true, jeśli p jest obiektem typu dict, ale nie jest instancją podtypu typu dict. Funkcja ta zawsze kończy się powodzeniem.

PyObject *PyDict_New()
  Wartość zwracana: nowa referencja. Część stabilnego ABI.

  Zwraca nowy pusty słownik lub `NULL` w przypadku niepowodzenia.

PyObject *PyDictProxy_New(PyObject *mapping)
  Wartość zwracana: nowa referencja. Część stabilnego ABI.

  Return a `types.MappingProxyType` object for a mapping which enforces read-only behavior. This is normally used to create a view to prevent modification of the dictionary for non-dynamic class types.

void PyDict_Clear(PyObject *p)
  Część stabilnego ABI.

  Empty an existing dictionary of all key-value pairs.

int PyDict_Contains(PyObject *p, PyObject *key)
  Część stabilnego ABI.

  Determine if dictionary p contains key. If an item in p is matches key, return `1`, otherwise return `0`. On error, return `-1`. This is equivalent to the Python expression `key in p`.

PyObject *PyDict_Copy(PyObject *p)
  Wartość zwracana: nowa referencja. Część stabilnego ABI.

  Zwraca nowy słownik zawierający te same pary klucz-wartość co p.

int PyDict_SetItem(PyObject *p, PyObject *key, PyObject *val)
  Część stabilnego ABI.

  Insert val into the dictionary p with a key of key. key must be hashable; if it isn’t, `TypeError` will be raised. Return `0` on success or `-1` on failure. This function does not steal a reference to val.

int PyDict_SetItemString(PyObject *p, const char *key, PyObject *val)
  Część stabilnego ABI.

  This is the same as `PyDict_SetItem()`, but key is specified as a const char* UTF-8 encoded bytes string, rather than a PyObject*.

int PyDict_DelItem(PyObject *p, PyObject *key)
  Część stabilnego ABI.

  Remove the entry in dictionary p with key key. key must be hashable; if it isn’t, `TypeError` is raised. If key is not in the dictionary, `KeyError` is raised. Return `0` on success or `-1` on failure.

int PyDict_DelItemString(PyObject *p, const char *key)
  Część stabilnego ABI.

  This is the same as `PyDict_DelItem()`, but key is specified as a const char* UTF-8 encoded bytes string, rather than a PyObject*.

PyObject *PyDict_GetItem(PyObject *p, PyObject *key)
  Wartość zwracana: pożyczona referencja. Część stabilnego ABI.

  Return the object from dictionary p which has a key key. Return `NULL` if the key key is not present, but without setting an exception.

  Informacja

  Exceptions that occur while this calls `__hash__()` and `__eq__()` methods are silently ignored. Prefer the `PyDict_GetItemWithError()` function instead.

  Zmienione w wersji 3.10: Calling this API without GIL held had been allowed for historical reason. It is no longer allowed.

PyObject *PyDict_GetItemWithError(PyObject *p, PyObject *key)
  Wartość zwracana: pożyczona referencja. Część stabilnego ABI.

  Variant of `PyDict_GetItem()` that does not suppress exceptions. Return `NULL` with an exception set if an exception occurred. Return `NULL` without an exception set if the key wasn’t present.

PyObject *PyDict_GetItemString(PyObject *p, const char *key)
  Wartość zwracana: pożyczona referencja. Część stabilnego ABI.

  This is the same as `PyDict_GetItem()`, but key is specified as a const char* UTF-8 encoded bytes string, rather than a PyObject*.

  Informacja

  Exceptions that occur while this calls `__hash__()` and `__eq__()` methods or while creating the temporary `str` object are silently ignored. Prefer using the `PyDict_GetItemWithError()` function with your own `PyUnicode_FromString()` key instead.

PyObject *PyDict_SetDefault(PyObject *p, PyObject *key, PyObject *defaultobj)
  Wartość zwracana: pożyczona referencja.

  This is the same as the Python-level `dict.setdefault()`. If present, it returns the value corresponding to key from the dictionary p. If the key is not in the dict, it is inserted with value defaultobj and defaultobj is returned. This function evaluates the hash function of key only once, instead of evaluating it independently for the lookup and the insertion.

  Nowe w wersji 3.4.

PyObject *PyDict_Items(PyObject *p)
  Wartość zwracana: nowa referencja. Część stabilnego ABI.

  Return a `PyListObject` containing all the items from the dictionary.

PyObject *PyDict_Keys(PyObject *p)
  Wartość zwracana: nowa referencja. Część stabilnego ABI.

  Return a `PyListObject` containing all the keys from the dictionary.

PyObject *PyDict_Values(PyObject *p)
  Wartość zwracana: nowa referencja. Część stabilnego ABI.

  Zwraca `PyListObject` zawierający wszystkie wartości ze słownika p.

Py_ssize_t PyDict_Size(PyObject *p)
  Część stabilnego ABI.

  Return the number of items in the dictionary. This is equivalent to `len(p)` on a dictionary.

int PyDict_Next(PyObject *p, Py_ssize_t *ppos, PyObject **pkey, PyObject **pvalue)
  Część stabilnego ABI.

  Iterate over all key-value pairs in the dictionary p. The `Py_ssize_t` referred to by ppos must be initialized to `0` prior to the first call to this function to start the iteration; the function returns true for each pair in the dictionary, and false once all pairs have been reported. The parameters pkey and pvalue should either point to PyObject* variables that will be filled in with each key and value, respectively, or may be `NULL`. Any references returned through them are borrowed. ppos should not be altered during iteration. Its value represents offsets within the internal dictionary structure, and since the structure is sparse, the offsets are not consecutive.

  Dla przykładu:

      PyObject *key, *value;
      Py_ssize_t pos = 0;

      while (PyDict_Next(self->dict, &pos, &key, &value)) {
          /* do something interesting with the values... */
          ...
      }

  The dictionary p should not be mutated during iteration. It is safe to modify the values of the keys as you iterate over the dictionary, but only so long as the set of keys does not change. For example:

      PyObject *key, *value;
      Py_ssize_t pos = 0;

      while (PyDict_Next(self->dict, &pos, &key, &value)) {
          long i = PyLong_AsLong(value);
          if (i == -1 && PyErr_Occurred()) {
              return -1;
          }
          PyObject *o = PyLong_FromLong(i + 1);
          if (o == NULL)
              return -1;
          if (PyDict_SetItem(self->dict, key, o) < 0) {
              Py_DECREF(o);
              return -1;
          }
          Py_DECREF(o);
      }

int PyDict_Merge(PyObject *a, PyObject *b, int override)
  Część stabilnego ABI.

  Iterate over mapping object b adding key-value pairs to dictionary a. b may be a dictionary, or any object supporting `PyMapping_Keys()` and `PyObject_GetItem()`. If override is true, existing pairs in a will be replaced if a matching key is found in b, otherwise pairs will only be added if there is not a matching key in a. Return `0` on success or `-1` if an exception was raised.

int PyDict_Update(PyObject *a, PyObject *b)
  Część stabilnego ABI.

  This is the same as `PyDict_Merge(a, b, 1)` in C, and is similar to `a.update(b)` in Python except that `PyDict_Update()` doesn’t fall back to the iterating over a sequence of key value pairs if the second argument has no „keys” attribute. Return `0` on success or `-1` if an exception was raised.

int PyDict_MergeFromSeq2(PyObject *a, PyObject *seq2, int override)
  Część stabilnego ABI.

  Update or merge into dictionary a, from the key-value pairs in seq2. seq2 must be an iterable object producing iterable objects of length 2, viewed as key-value pairs. In case of duplicate keys, the last wins if override is true, else the first wins. Return `0` on success or `-1` if an exception was raised. Equivalent Python (except for the return value):

      def PyDict_MergeFromSeq2(a, seq2, override):
          for key, value in seq2:
              if override or key not in a:
                  a[key] = value