I recently built something I couldn’t find in the Python ecosystem: 👉 A true 1:1 runtime-FFI binding for Swiss Ephemeris. swisseph-ffi The Problem Most Python bindings for Swiss Ephemeris: Use CPython extensions Depend on compiled wheels Wrap or modify the API That’s fine — until you need: Full API coverage Exact C-level behavior Long-term compatibility across Python versions The Approach This project uses: 👉 ctypes (runtime FFI) 👉 No compiled Python extension 👉 Direct shared library loading Result: You call Swiss Ephemeris exactly like C does — from Python. What You Get 106/106 C functions mapped Full constant parity No output reshaping No abstraction layer Prebuilt native libraries included Cross-platform support What You DON’T Get (intentionally) No helper abstractions No “Pythonic” transformations No hidden logic This is a low-level tool by design .…