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Tip revision: e948ea01eb6635d544a2100ceeb18933b6e37753 authored by Barry Warsaw on 01 October 2009, 23:39:49 UTC
Bump to 2.6.3
Bump to 2.6.3
Tip revision: e948ea0
iterator.rst
.. highlightlang:: c
.. _iterator-objects:
Iterator Objects
----------------
Python provides two general-purpose iterator objects. The first, a sequence
iterator, works with an arbitrary sequence supporting the :meth:`__getitem__`
method. The second works with a callable object and a sentinel value, calling
the callable for each item in the sequence, and ending the iteration when the
sentinel value is returned.
.. cvar:: PyTypeObject PySeqIter_Type
Type object for iterator objects returned by :cfunc:`PySeqIter_New` and the
one-argument form of the :func:`iter` built-in function for built-in sequence
types.
.. versionadded:: 2.2
.. cfunction:: int PySeqIter_Check(op)
Return true if the type of *op* is :cdata:`PySeqIter_Type`.
.. versionadded:: 2.2
.. cfunction:: PyObject* PySeqIter_New(PyObject *seq)
Return an iterator that works with a general sequence object, *seq*. The
iteration ends when the sequence raises :exc:`IndexError` for the subscripting
operation.
.. versionadded:: 2.2
.. cvar:: PyTypeObject PyCallIter_Type
Type object for iterator objects returned by :cfunc:`PyCallIter_New` and the
two-argument form of the :func:`iter` built-in function.
.. versionadded:: 2.2
.. cfunction:: int PyCallIter_Check(op)
Return true if the type of *op* is :cdata:`PyCallIter_Type`.
.. versionadded:: 2.2
.. cfunction:: PyObject* PyCallIter_New(PyObject *callable, PyObject *sentinel)
Return a new iterator. The first parameter, *callable*, can be any Python
callable object that can be called with no parameters; each call to it should
return the next item in the iteration. When *callable* returns a value equal to
*sentinel*, the iteration will be terminated.
.. versionadded:: 2.2