cpython/Include/rangeobject.h

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/* Range object interface */
#ifndef Py_RANGEOBJECT_H
#define Py_RANGEOBJECT_H
#ifdef __cplusplus
extern "C" {
#endif
/* This is about the type 'xrange', not the built-in function range(), which
returns regular lists. */
/*
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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.
*/
PyAPI_DATA(PyTypeObject) PyRange_Type;
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#define PyRange_Check(op) ((op)->ob_type == &PyRange_Type)
PyAPI_FUNC(PyObject *) PyRange_New(long, long, long, int);
#ifdef __cplusplus
}
#endif
#endif /* !Py_RANGEOBJECT_H */