These notes are meant to help developers and contributors with regards to some details of the implementation and coding style of the project.
The Python codebase currently targets Python 3.6+, strives to follow PEP 8 and uses Numpy style docstring.
Python C++ bindings¶
The bindings are hand-written and relies on cppy (https://github.com/nucleic/cppy). Atom tries to use a reasonably modern C API and to support sub-interpreter, this has a couple of consequences:
- static variables use is limited to cases that cannot lead to state leakage between multiple sub-interpreters. Note that this is currently not heavily tested and may require some improvements.
- all the non exported symbol are enclosed in anonymous namespaces
- atom does not use static types and only dynamical types (note that the type slots and related structures are stored in a static variable)
- modules use the multi-phases initialization mechanism as defined in PEP 489 – Multi-phase extension module initialization