[NotorandXor256]

Fixes #161004
This PR fix functools.reduce.The C functools_reduce calls PyObject_GetIter(seq) once and then only PyIter_Next(it). The Python version calls iter(sequence) and then for element in it:, which calls iter() again on the iterator.

this PR fix this behavior by change for loop for element in it: to while loop. While loop is terminated next(element) throw a StopIteration exception and error handle it and break the loop

this PR also add a test and change the documentation

• Issue: Pure-Python functools.reduce calls iter() twice, unlike the C implementation #161004

[read-the-docs-community]

Documentation build overview

📚 cpython-previews | 🛠️ Build #35547167 | 📁 Comparing 587dcc4 against main (663e99d)

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3 files changed

± library/functools.html
± library/os.path.html
± whatsnew/changelog.html

[picnixz]

You have lots of unrelated changes. I suggest you open a new PR without those un-necssary changes from other PRs

[picnixz]

(checkout from a fresh main that is not tainted by commits not in origin/main)