[Python-Dev] Store startup modules as C structures for 20%+ startup speed improvement?

Stefan Behnel stefan_ml at behnel.de
Wed Sep 19 03:32:34 EDT 2018

Carl Shapiro schrieb am 18.09.2018 um 22:44:
> How might people feel about using the linker to bundle a list of pre-loaded
> modules into a single-file executable?

One way to do that would be to compile Python modules with Cython and link
them in statically, instead of compiling them to .pyc files.

Advantage: you get native C .o files, fast and straight forward to link.

Disadvantage: native code is much more voluminous than byte code, so the
overall binary size would grow substantially.

Also, one thing that would be interesting to find out is whether constant
Python data structures can actually be pre-allocated in the data segment
(and I mean their object structs) . Then things like tuples of strings
(argument lists and what not) could be loaded and the objects quickly
initialised (although, is that even necessary?), rather than having to heap
allocate and create them. Probably something that we should try out in Cython.


More information about the Python-Dev mailing list