PyHash API¶
See also the PyTypeObject.tp_hash
member and 數值型別的雜湊.
-
type Py_hash_t¶
雜湊值型別:有符號整數。
在 3.2 版被加入.
-
type Py_uhash_t¶
雜湊值型別:無符號整數。
在 3.2 版被加入.
-
PyHASH_MODULUS¶
The Mersenne prime
P = 2**n -1
, used for numeric hash scheme.在 3.13 版被加入.
-
PyHASH_BITS¶
The exponent
n
ofP
inPyHASH_MODULUS
.在 3.13 版被加入.
-
PyHASH_MULTIPLIER¶
Prime multiplier used in string and various other hashes.
在 3.13 版被加入.
-
PyHASH_INF¶
The hash value returned for a positive infinity.
在 3.13 版被加入.
-
PyHASH_IMAG¶
The multiplier used for the imaginary part of a complex number.
在 3.13 版被加入.
-
type PyHash_FuncDef¶
PyHash_GetFuncDef()
所使用的雜湊函式定義。-
const char *name¶
雜湊函式名稱(UTF-8 編碼字串)。
-
const int hash_bits¶
雜湊值的內部大小(以位元為單位)。
-
const int seed_bits¶
Seed 輸入的大小(以位元為單位)。
在 3.4 版被加入.
-
const char *name¶
-
PyHash_FuncDef *PyHash_GetFuncDef(void)¶
取得雜湊函式定義。
也參考
PEP 456「安全且可交替使用的雜湊演算法 (Secure and interchangeable hash algorithm)」。
在 3.4 版被加入.
-
Py_hash_t Py_HashPointer(const void *ptr)¶
Hash a pointer value: process the pointer value as an integer (cast it to
uintptr_t
internally). The pointer is not dereferenced.The function cannot fail: it cannot return
-1
.在 3.13 版被加入.
-
Py_hash_t PyObject_GenericHash(PyObject *obj)¶
Generic hashing function that is meant to be put into a type object's
tp_hash
slot. Its result only depends on the object's identity.CPython 實作細節: In CPython, it is equivalent to
Py_HashPointer()
.在 3.13 版被加入.