mirror of
https://github.com/python/cpython.git
synced 2024-12-01 03:01:36 +01:00
51 lines
1.6 KiB
ReStructuredText
51 lines
1.6 KiB
ReStructuredText
.. 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.
|
|
|
|
|
|
.. c:var:: PyTypeObject PySeqIter_Type
|
|
|
|
Type object for iterator objects returned by :c:func:`PySeqIter_New` and the
|
|
one-argument form of the :func:`iter` built-in function for built-in sequence
|
|
types.
|
|
|
|
|
|
.. c:function:: int PySeqIter_Check(op)
|
|
|
|
Return true if the type of *op* is :c:data:`PySeqIter_Type`.
|
|
|
|
|
|
.. c:function:: 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.
|
|
|
|
|
|
.. c:var:: PyTypeObject PyCallIter_Type
|
|
|
|
Type object for iterator objects returned by :c:func:`PyCallIter_New` and the
|
|
two-argument form of the :func:`iter` built-in function.
|
|
|
|
|
|
.. c:function:: int PyCallIter_Check(op)
|
|
|
|
Return true if the type of *op* is :c:data:`PyCallIter_Type`.
|
|
|
|
|
|
.. c:function:: 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.
|