cpython/Include/rangeobject.h

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Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
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/* Range object interface */

/*
A range object represents an integer range.  This is an immutable object;
a range cannot change its value after creation.

Range objects behave like the corresponding tuple objects except that
they are represented by a start, stop, and step datamembers.
*/

extern DL_IMPORT(PyTypeObject) PyRange_Type;

#define PyRange_Check(op) ((op)->ob_type == &PyRange_Type)

extern PyObject *PyRange_New Py_PROTO((long, long, long, int));