疊代器(Iterator)物件¶
Python 提供了兩種通用的疊代器 (iterator) 物件,第一種是序列疊代器 (sequence iterator),適用於支援 __getitem__()
方法的任意序列,第二種是與可呼叫 (callable) 物件和哨兵值 (sentinel value) 一起使用,會呼叫序列中的每個可呼叫物件,當回傳哨兵值時就結束疊代。
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PyTypeObject PySeqIter_Type¶
- 為 穩定 ABI 的一部分.
此型別物件用於由
PySeqIter_New()
所回傳的疊代器物件以及用於內建序列型別的內建函式iter()
的單引數形式。
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int PySeqIter_Check(PyObject *op)¶
Return true if the type of op is
PySeqIter_Type
. This function always succeeds.
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PyObject *PySeqIter_New(PyObject *seq)¶
- 回傳值:新的參照。 為 穩定 ABI 的一部分.
Return an iterator that works with a general sequence object, seq. The iteration ends when the sequence raises
IndexError
for the subscripting operation.
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PyTypeObject PyCallIter_Type¶
- 為 穩定 ABI 的一部分.
Type object for iterator objects returned by
PyCallIter_New()
and the two-argument form of theiter()
built-in function.
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int PyCallIter_Check(PyObject *op)¶
Return true if the type of op is
PyCallIter_Type
. This function always succeeds.
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PyObject *PyCallIter_New(PyObject *callable, PyObject *sentinel)¶
- 回傳值:新的參照。 為 穩定 ABI 的一部分.
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.