24
Find the bug (a classic) (programming.dev)
submitted 1 month ago by sus@programming.dev to c/python@programming.dev
12 comments fedilink hide all child comments 
class Node:
    def __init__(self, edges = set()):
        self.edges = edges


def main():
    foo = Node()
    bar = Node()
    quz = Node()

    foo.edges.add(bar)
    bar.edges.add(foo)

    assert(foo is not bar) # assertion succeeds
    assert(foo is not quz) # assertion succeeds
    assert(bar is not quz) # assertion succeeds
    assert(len(quz.edges) == 0) # assertion fails??


main()

spoilerMutable default values are shared across objects. The set in this case.

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[-] NostraDavid@programming.dev 2 points 1 month ago

It has implemented about half - I would check which the important ones are, and check if it's been implemented (which is being tracked in issue 970):

https://github.com/astral-sh/ruff/issues/970

Astral claims Ruff has more rules total (about 800), but implemented about half of Pylint (which has 400 rules, so 200 implemented).

this post was submitted on 26 Feb 2025
24 points (96.2% liked)

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