diff --git a/Doc/library/itertools.rst b/Doc/library/itertools.rst
index ee70b16f42fbb9..8eb843ab0a67be 100644
--- a/Doc/library/itertools.rst
+++ b/Doc/library/itertools.rst
@@ -881,12 +881,12 @@ which incur interpreter overhead.
raise ValueError('Expected fill, strict, or ignore')
def batched(iterable, n):
- "Batch data into lists of length n. The last batch may be shorter."
+ "Batch data into tuples of length n. The last batch may be shorter."
# batched('ABCDEFG', 3) --> ABC DEF G
if n < 1:
raise ValueError('n must be at least one')
it = iter(iterable)
- while (batch := list(islice(it, n))):
+ while (batch := tuple(islice(it, n))):
yield batch
def triplewise(iterable):
@@ -1248,25 +1248,25 @@ which incur interpreter overhead.
[('a', 'b', 'c'), ('d', 'e', 'f')]
>>> list(batched('ABCDEFG', 3))
- [['A', 'B', 'C'], ['D', 'E', 'F'], ['G']]
+ [('A', 'B', 'C'), ('D', 'E', 'F'), ('G',)]
>>> list(batched('ABCDEF', 3))
- [['A', 'B', 'C'], ['D', 'E', 'F']]
+ [('A', 'B', 'C'), ('D', 'E', 'F')]
>>> list(batched('ABCDE', 3))
- [['A', 'B', 'C'], ['D', 'E']]
+ [('A', 'B', 'C'), ('D', 'E')]
>>> list(batched('ABCD', 3))
- [['A', 'B', 'C'], ['D']]
+ [('A', 'B', 'C'), ('D',)]
>>> list(batched('ABC', 3))
- [['A', 'B', 'C']]
+ [('A', 'B', 'C')]
>>> list(batched('AB', 3))
- [['A', 'B']]
+ [('A', 'B')]
>>> list(batched('A', 3))
- [['A']]
+ [('A',)]
>>> list(batched('', 3))
[]
>>> list(batched('ABCDEFG', 2))
- [['A', 'B'], ['C', 'D'], ['E', 'F'], ['G']]
+ [('A', 'B'), ('C', 'D'), ('E', 'F'), ('G',)]
>>> list(batched('ABCDEFG', 1))
- [['A'], ['B'], ['C'], ['D'], ['E'], ['F'], ['G']]
+ [('A',), ('B',), ('C',), ('D',), ('E',), ('F',), ('G',)]
>>> s = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
>>> all(list(flatten(batched(s[:n], 5))) == list(s[:n]) for n in range(len(s)))
True
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