[Python-Dev] O(1) deletes from the front of bytearray (was: Re: Adding bytes.frombuffer() constructor to PEP 467 (was: [Python-ideas] Adding bytes.frombuffer() constructor) (original) (raw)

Victor Stinner victor.stinner at gmail.com
Wed Oct 12 07:55:34 EDT 2016

2016-10-12 10:01 GMT+02:00 Nathaniel Smith <njs at pobox.com>:

It's more complicated than that -- the right algorithm is the one that Antoine implemented in 3.4. (...) My point is that forcing everyone who writes network code in Python to do that is silly, especially given that CPython's apparently been shipping this feature for years.

"For years" means since March 2014, Python 3.4.0 release, so 2 years ago.

We can document the optimization as a CPython implementation detail and explain that it's only in Python >= 3.4.

So an application which should work on Python 2.7 as well cannot rely on this optimization for example.

Victor

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