I don't see how "return (key, value)" is less readable than it's list counterpart. Now, why using a list that can grow, and so takes more space and maybe less efficient, for something that should not?
"return (key, value)" can be read as a function-call. Especially as space after the function-name is allowed in python. And performance on that level is no serious topic in python anyway. But this is mainly just a personal preference.
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I don't see how "return (key, value)" is less readable than it's list counterpart. Now, why using a list that can grow, and so takes more space and maybe less efficient, for something that should not?
"return (key, value)" can be read as a function-call. Especially as space after the function-name is allowed in python. And performance on that level is no serious topic in python anyway. But this is mainly just a personal preference.