add extra info to vars (python >= 3.9)

anotations.py

from typing import Annotated

class Pepe(object):
    hola_quillo: Annotated[int, "hola quillo"]
    yepale: Annotated[float, "yepa.le"]
    todobien: float

def get_display_name(className, varName):
    from typing import get_type_hints
    hints = get_type_hints(className, include_extras=True)
    try:
        return hints[varName].__metadata__[0]
    except:
        return varName

name = get_display_name(Pepe, 'hola_quillo')
print(name)
name = get_display_name(Pepe, 'yepale')
print(name)
name = get_display_name(Pepe, 'todobien')
print(name)

output:

hola quillo
yepa.le
todobien