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by ketozhang 1816 days ago
Immutability isn't so difficult to do with Python language itself for any object. The push back is culture and practice of "we are all adults here" and that influences the language to make it forcing immutability awkward.

For example, let's assign a constant variable to a sequence; should you do use list or tuple (FOO = [1,2,3] or FOO = (1,2,3) )? It doesn't matter, the constant capitalization discourages you to mutate it.
2 comments
travisjungroth 1816 days ago
I don’t want constants. I want immutability. The problem isn’t someone reassigning FOO. It’s them changing the data that FOO represents. So I’d love to just use Python and pass around tuples, strings, frozensets and a homemade frozendict, but the performance is terrible. Any change means a full copy of the whole data structure.
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dexterous 1815 days ago
> The push back is culture and practice of "we are all adults here" and that influences the language

It's strange that a general idea expressing (assuming?) overarching maturity has led to quite so many petulant arguments, wouldn't you say @ketozhang?

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