[issue43618] random.shuffle loses most of the elements
Tim Peters
report at bugs.python.org
Wed Mar 24 15:30:00 EDT 2021
Tim Peters <tim at python.org> added the comment:
Are you sure it's "a list"? At least print out `type(questions_element)`. `random.shuffle()` doesn't contain any code _capable_ of changing a list's length. It only does indexed accessing of the list:
...
for i in reversed(range(1, len(x))):
# pick an element in x[:i+1] with which to exchange x[i]
j = randbelow(i + 1)
x[i], x[j] = x[j], x[i]
That's about all there is to it. Note that, for this purpose, it doesn't matter want `randbelow()` does, because that function never even sees `x`.
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nosy: +tim.peters
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<https://bugs.python.org/issue43618>
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