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Fix docstring and var name of itertools recipe (#112113)
`prepend()` works with arbitrary iterables, not only iterators. In fact, the example given uses a `list`, which is iterable, but not an iterator.
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@ -798,10 +798,10 @@ which incur interpreter overhead.
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"Return first n items of the iterable as a list"
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return list(islice(iterable, n))
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def prepend(value, iterator):
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"Prepend a single value in front of an iterator"
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def prepend(value, iterable):
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"Prepend a single value in front of an iterable"
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# prepend(1, [2, 3, 4]) --> 1 2 3 4
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return chain([value], iterator)
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return chain([value], iterable)
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def tabulate(function, start=0):
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"Return function(0), function(1), ..."
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