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Python Mutability (programming.dev)
submitted 11 months ago by to c/python@programming.dev
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[–] 2 points 11 months ago (2 children)

As I would expect. Does the result surprise people?

If so, rename the arguments to fun() to be r, s, t, and u. Just inside the function. Does the obvious two scopes now make it clearer?

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  • [–] 7 points 11 months ago (2 children)

    The fact that x += y modifies lists in place might be surprising if you're expecting it to be exactly equivalent to x = x + y.

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  • [–] 2 points 11 months ago

    To be fair, I had to read the linked question on SO to understand what was the possible alternative. I do expect that if I use += it is in place.

    On the other hand with Python and Java I always keep forgetting if everything is by value or by reference, I really miss some extra clarity of the languages where you can see if something is mutable when passed to a function

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  • [–] 3 points 11 months ago (2 children)

    Looks like this whole post is an ad for someone's project. The links hardly have to do with the post.

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