window¶

emlib.iterlib.window(iterable, size=3, step=1)[source]¶

iterate over subseqs of iterable

Parameters:

iterable (Iterable[TypeVar(T)]) – an iterable
size – the size of the window
step – the step size

Return type:

Iterator[tuple[TypeVar(T), ...]]

Returns:

an iterator over a tuple of items of iterable, windowed as indicated

Example

>>> seq = range(6)
>>> list(window(seq, 3, 1))
[(0, 1, 2), (1, 2, 3), (2, 3, 4), (3, 4, 5)]
>>> list(window(seq, 3, 2))
[(0, 1, 2), (2, 3, 4)]
# the same as pairwise
>>> list(window(range(5), 2, 1))
[(0, 1), (1, 2), (2, 3), (3, 4)]