Quotations tagged python in 2023
Filters: Type: quotation × Year: 2023 × python × Sorted by date
[On Python 3.12 subinterpreters] there’s massive advantages for mixed C(++) and Python: I can now have multiple sub interpreters running concurrently and accessing the same shared state in a thread-safe C++ library.
Previously this required rewriting the whole C++ library to support either pickling (multiplying the total memory consumption by the number of cores), or support allocating everything in shared memory (which means normal C++ types like `std::string` are unusable, need to switch e.g. to boost::interprocess).
Now is sufficient to pickle a pointer to a C++ object as an integer, and it’ll still be a valid pointer in the other subinterpreter.
— ynik # 2nd October 2023, 6:13 pm
My strong hunch is that the GIL does not need removing, if a) subinterpreters have their own GILs and b) an efficient way is provided to pass (some) data between subinterpreters lock free and c) we find good patterns to make working with subinterpreters work.
— Armin Ronacher # 11th April 2023, 4:47 pm
Several libraries let you declare objects with type-hinted members and automatically derive validation rules and serialization/deserialization from the type hints – Pydantic is the most popular, but alternatives like msgspec are out there too. There’s also a whole new generation of web frameworks like FastAPI and Starlite which use type hints at runtime to do not just input validation and serialization/deserialization but also things like dependency injection.
Personally, I’ve seen more significant gains in productivity from those runtime usages of Python’s type hints than from any static ahead-of-time type checking, which mostly is only useful to me as documentation.
— James Bennett # 7th April 2023, 2:19 am