PyHash API¶
See also the PyTypeObject.tp_hash member and 數值型別的雜湊.
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type Py_hash_t¶
雜湊值型別:有符號整數。
在 3.2 版被加入.
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type Py_uhash_t¶
雜湊值型別:無符號整數。
在 3.2 版被加入.
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PyHASH_MODULUS¶
The Mersenne prime
P = 2**n -1, used for numeric hash scheme.在 3.13 版被加入.
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PyHASH_BITS¶
The exponent
nofPinPyHASH_MODULUS.在 3.13 版被加入.
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PyHASH_MULTIPLIER¶
Prime multiplier used in string and various other hashes.
在 3.13 版被加入.
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PyHASH_INF¶
The hash value returned for a positive infinity.
在 3.13 版被加入.
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PyHASH_IMAG¶
The multiplier used for the imaginary part of a complex number.
在 3.13 版被加入.
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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)。
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const int hash_bits¶
雜湊值的內部大小(以位元為單位)。
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const int seed_bits¶
Seed 輸入的大小(以位元為單位)。
在 3.4 版被加入.
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const char *name¶
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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.
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Py_hash_t Py_HashPointer(const void *ptr)¶
Hash a pointer value: process the pointer value as an integer (cast it to
uintptr_tinternally). The pointer is not dereferenced.The function cannot fail: it cannot return
-1.在 3.13 版被加入.
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Py_hash_t PyObject_GenericHash(PyObject *obj)¶
Generic hashing function that is meant to be put into a type object's
tp_hashslot. 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.