Using the `function` argument of `itertools.accumulate()` gets error against the doc

Bug report

Bug description:

The doc of itertools.accumulate() says the 2nd parameter is function as shown below:

itertools.accumulate(iterable[, function, *, initial=None])

But using function argument gets the error against the doc as shown below:

from itertools import accumulate
from operator import mul
                                            # ↓↓↓↓↓↓↓↓
for x in accumulate(iterable=[1, 2, 3, 4, 5], function=mul):
    print(x)
# TypeError: 'function' is an invalid keyword argument for accumulate()

So, I used func argument, then it works as shown below:

from itertools import accumulate
from operator import mul
                                            # ↓↓↓↓
for x in accumulate(iterable=[1, 2, 3, 4, 5], func=mul):
    print(x)
# 1
# 2
# 6
# 24
# 120

CPython versions tested on:

3.13

Operating systems tested on:

Windows

Linked PRs

• gh-135283

从 issue 中链接的 itertools.accumulate() 文档开始，并将其签名与 Python 示例中显示的可接受关键字进行比较。确认文档中的参数名称，并更新文档，使签名与实际用法一致；开始之前检查链接的 PR gh-135283。