[Python-Dev] Python startup time
INADA Naoki
songofacandy at gmail.com
Wed May 2 23:57:28 EDT 2018
Recently, I reported how stdlib slows down `import requests`.
https://github.com/requests/requests/issues/4315#issuecomment-385584974
For Python 3.8, my ideas for faster startup time are:
* Add lazy compiling API or flag in `re` module. The pattern is compiled
when first used.
* Add IntEnum and IntFlag alternative in C, like PyStructSequence for
namedtuple.
It will make importing `socket` and `ssl` module much faster. (Both
module has huge enum/flag).
* Add special casing for UTF-8 and ASCII in TextIOWrapper. When
application uses only
UTF-8 or ASCII, we can skip importing codecs and encodings package
entirely.
* Add faster and simpler http.parser (maybe, based on h11 [1]) and avoid
using email module in http module.
[1]: https://h11.readthedocs.io/en/latest/
I don't have significant estimate how they can make `import requests`
faster, but I believe most of these ideas
are worth enough.
Regards,
More information about the Python-Dev
mailing list