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

Empieza desensamblando los dos ejemplos de Python del informe en CPython 3.12 o main, y después sigue cómo se compilan las rutas de llamada de la comprensión de listas y de nivel superior. Se considera terminado cuando ambas formas utilizan un bytecode coherente para la llamada a la definición importada sin cambiar el comportamiento observable.