c - 大多数 Pythonic 方式等同于 : while ((x = next()) ! = END)

Question

这个 C 结构的最佳 Python 习语是什么？

while ((x = next()) != END) {
    ....
}

我没有能力重新编码 next()。

更新:答案似乎是:

for x in iter(next, END):
    ....

Answer 1

@Mark Harrison 的回答:

for x in iter(next_, END):
    ....

这是来自 Python's documentation 的摘录:

iter(o[, sentinel])

Return an iterator object. ...(snip)... If the second argument, sentinel, is given, then o must be a callable object. The iterator created in this case will call o with no arguments for each call to its next() method; if the value returned is equal to sentinel, StopIteration will be raised, otherwise the value will be returned.