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I never do 1+”1” in my code, so this example is not useful to me. I do however annotate types and expect Python to respect type annotations which is not the ca
by slt2021 3y ago
I never do 1+”1” in my code, so this example is not useful to me.
I do however annotate types and expect Python to respect type annotations which is not the case. Then I dont understand what is point of annotating types if they are not respected?
If your argument that Python doesn’t convert from one type to another - well, it doesn’t need to do that if doesn’t care about types in the first place and lets you pass any junk into any method (and this is #1 thing that type system is supposed to prevent)
Is it only for documentation so that people reading code could understand what types to pass?
- dsemi 3y agoPython type annotations were added to be used by an external type checker, so no they are not enforced by the interpreter itself. This was an explicit decision: https://peps.python.org/pep-0484/#non-goals https://peps.python.org/pep-0484/#non-goals
- TheCleric 3y agoPython type hinting is not useful at runtime (in fact it's flat out ignored). It is useful at "linting" time when run through mypy.