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Python/C API Reference Manual

Previous: 7.5.4 Module Objects Up: 7.5 Other Objects Next: 7.5.6 Descriptor Objects

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7.5.5 Iterator Objects

Python provides two general-purpose iterator objects. The first, a sequence iterator, works with an arbitrary sequence supporting the __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.

PyTypeObject PySeqIter_Type

Type object for iterator objects returned by PySeqIter_New() and the one-argument form of the iter() built-in function for built-in sequence types. New in version 2.2.

int PySeqIter_Check(

op)

Return true if the type of op is PySeqIter_Type. New in version 2.2.

PyObject* PySeqIter_New(

PyObject *seq)

Return value: New reference.

Return an iterator that works with a general sequence object, seq. The iteration ends when the sequence raises IndexError for the subscripting operation. New in version 2.2.

PyTypeObject PyCallIter_Type

Type object for iterator objects returned by PyCallIter_New() and the two-argument form of the iter() built-in function. New in version 2.2.

int PyCallIter_Check(

op)

Return true if the type of op is PyCallIter_Type. New in version 2.2.

PyObject* PyCallIter_New(

PyObject *callable, PyObject *sentinel)

Return value: New reference.

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. New in version 2.2.

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Python/C API Reference Manual

Previous: 7.5.4 Module Objects Up: 7.5 Other Objects Next: 7.5.6 Descriptor Objects

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Release 2.3.4, documentation updated on May 20, 2004.