objectif

Découper en blocs de taille fixe (fallback pour versions plus anciennes).

code minimal

import itertools
try:
    b = list(itertools.batched(range(5), 2))
except AttributeError:
    def batched(iterable, n):
        it = iter(iterable)
        while True:
            chunk = tuple([next(it, None) for _ in range(n)])
            chunk = tuple(x for x in chunk if x is not None)
            if not chunk: break
            yield chunk
    b = list(batched(range(5), 2))
print(b == [(0,1),(2,3),(4,)])  # attendu: True

utilisation

import itertools
xs = list(getattr(itertools, "batched", lambda it, n: (tuple(it),))(range(3), 2))
print(len(xs) >= 1)

variante(s) utile(s)

import itertools
print(hasattr(itertools, "batched") or True)

notes

• itertools.batched existe en 3.12+; fournissez un fallback sinon.
• Utile pour paginer des appels réseau ou I/O.