Plain Integer Objects ¶

PyIntObject ¶

此子类型的 PyObject 表示 Python 整数对象。

PyTypeObject PyInt_Type ¶

此实例的 PyTypeObject represents the Python plain integer type. This is the same object as int and types.IntType .

int PyInt_Check ( PyObject  *o ) ¶

返回 True 若 o 是类型 PyInt_Type 或子类型的 PyInt_Type .

2.2 版改变： Allowed subtypes to be accepted.

int PyInt_CheckExact ( PyObject  *o ) ¶

返回 True 若 o 是类型 PyInt_Type ，但不是子类型的 PyInt_Type .

2.2 版新增。

PyObject * PyInt_FromString ( char  *str , char  **pend , int  base ) ¶

返回值：新引用。

返回新的 PyIntObject or PyLongObject 基于字符串值 str , which is interpreted according to the radix in base 。若 pend 为非 NULL , *pend will point to the first character in str which follows the representation of the number. If base is 0 , the radix will be determined based on the leading characters of str : if str starts with '0x' or '0X' , radix 16 will be used; if str starts with '0' , radix 8 will be used; otherwise radix 10 will be used. If base 不是 0 , it must be between 2 and 36 , inclusive. Leading spaces are ignored. If there are no digits, ValueError will be raised. If the string represents a number too large to be contained within the machine’s long int type and overflow warnings are being suppressed, a PyLongObject will be returned. If overflow warnings are not being suppressed, NULL will be returned in this case.

PyObject * PyInt_FromLong ( long  ival ) ¶

返回值：新引用。

Create a new integer object with a value of ival .

当前实现保持整数对象数组对于所有整数介于 -5 and 256 ，当在该范围内创建 int 时，实际仅仅返回现有对象的引用。因此，应该可以改变值 1 。怀疑在这种情况下 Python 的行为是未定义的。)

PyObject * PyInt_FromSsize_t ( Py_ssize_t  ival ) ¶

返回值：新引用。

Create a new integer object with a value of ival . If the value is larger than LONG_MAX or smaller than LONG_MIN , a long integer object is returned.

2.5 版新增。

PyObject * PyInt_FromSize_t ( size_t  ival ) ¶

Create a new integer object with a value of ival . If the value exceeds LONG_MAX , a long integer object is returned.

2.5 版新增。

long PyInt_AsLong ( PyObject  *io ) ¶

Will first attempt to cast the object to a PyIntObject , if it is not already one, and then return its value. If there is an error, -1 is returned, and the caller should check PyErr_Occurred() to find out whether there was an error, or whether the value just happened to be -1.

long PyInt_AS_LONG ( PyObject  *io ) ¶

Return the value of the object io . No error checking is performed.

unsigned long PyInt_AsUnsignedLongMask ( PyObject  *io ) ¶

Will first attempt to cast the object to a PyIntObject or PyLongObject , if it is not already one, and then return its value as unsigned long. This function does not check for overflow.

2.3 版新增。

unsigned PY_LONG_LONG PyInt_AsUnsignedLongLongMask ( PyObject  *io ) ¶

Will first attempt to cast the object to a PyIntObject or PyLongObject , if it is not already one, and then return its value as unsigned long long, without checking for overflow.

2.3 版新增。

Py_ssize_t PyInt_AsSsize_t ( PyObject  *io ) ¶

Will first attempt to cast the object to a PyIntObject or PyLongObject , if it is not already one, and then return its value as Py_ssize_t .

2.5 版新增。

long PyInt_GetMax ( ) ¶

Return the system’s idea of the largest integer it can handle ( LONG_MAX , as defined in the system header files).

int PyInt_ClearFreeList ( ) ¶

Clear the integer free list. Return the number of items that could not be freed.

2.6 版新增。

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