Method call on imported definition differs inside of a list comprehension

Bug report

Bug description:

import re
[x for x in [] if re.match(".*", x)]

vs:

import re
re.match(".*", x)

When you disassemble these you'll see the inlined one will be doing a LOAD_ATTR 3 (match + NULL|self) while the one outside of the comprehension will be doing a PUSH_NULL/CALL which is to disable the method call optimization on things which are likely not methods.

These should both have the same byte code. There's no perceivable code execution difference other than performance though.

CPython versions tested on:

3.12, CPython main branch

Operating systems tested on:

Linux

Commencez par désassembler les deux exemples Python du rapport sur CPython 3.12 ou main, puis retracez la manière dont sont compilés les chemins d’appel de la compréhension de liste et de l’appel au niveau supérieur. Le travail est terminé lorsque les deux formes utilisent un bytecode cohérent pour l’appel de la définition importée, sans modifier le comportement observable.