Buat iterator yang mengembalikan elemen yang dipilih dari iterable. Berfungsi seperti pemotongan urutan tetapi tidak mendukung nilai negatif untuk memulai, berhenti, atau langkah.
itertools.islice(iterable, stop)def islice(iterable, *args):
islice('ABCDEFG', 2) --> A B
islice('ABCDEFG', 2, 4) --> C D
islice('ABCDEFG', 2, None) --> C D E F G
islice('ABCDEFG', 0, None, 2) --> A C E G
s = slice(*args)
start, stop, step = s.start or 0, s.stop or sys.maxsize, s.step or 1
it = iter(range(start, stop, step))
try:
nexti = next(it)
except StopIteration:
Consume *iterable* up to the *start* position.
for i, element in zip(range(start), iterable):
pass
return
try:
for i, element in enumerate(iterable):
if i == nexti:
yield element
nexti = next(it)
except StopIteration:
Consume to *stop*.
for i, element in zip(range(i + 1, stop), iterable):
pass