4 ms·

One carries the entire feature set of the python runtime, the other is compiled.

• FreeHugs 4y ago
  The time is spent in this 3-line loop: for poly in polygon_subset: if np.linalg.norm(poly.center - point) < max_dist: close_polygons.append(poly) I don't think the entire feature set of the Python runtime is involved in this.
  • ben-schaaf 4y ago
    Without using every feature you still have to conform to the complexity of the runtime. Every variable in that loop is a hash map lookup into the locals. `np.linalg.norm` is two field accesses, necessitating more hash map lookups on the module objects. `-` and `<` are attribute lookups as well as full function calls.
    • wizzwizz4 4y ago
      > Every variable in that loop is a hash map lookup into the locals. No, it's a LOAD_FAST bytecode instruction. (The other stuff is mostly right, and probably contributes.)