IndexError: list index out of range _ for loop in jsondata

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i tried to edit your code for 11 items like this:

from __future__ import annotations
import json
import contextlib
from typing import Any, Mapping


class Game:
    country: str
    league: str
    date: int
    hometeam: str|None
    awayteam: str|None
    odds1: float|None
    oddsX: float|None
    odds2: float|None
    over: float|None
    gline: float|None
    under: float|None

    @classmethod
    def from_json(cls, json_record: Mapping[str, Any]) -> Game:
        game = cls()
        game.country = json_record["CN"]
        game.league = json_record["L"]
        game.date = json_record["S"]
        game.hometeam = None
        game.awayteam = None
        game.odds1 = None
        game.oddsX = None
        game.odds2 = None
        game.over = None
        game.gline = None
        game.under = None
        if game_a := json_record.get:
            with contextlib.suppress(IndexError):
                game.hometeam = game_a.get("O1")
            with contextlib.suppress(IndexError):
                game.awayteam = game_a.get("O2")
        if game_e := json_record.get("E"):
            with contextlib.suppress(IndexError):
                game.odds1 = game_e[0].get("C")
            with contextlib.suppress(IndexError):
                game.oddsX = game_e[1].get("C")
            with contextlib.suppress(IndexError):
                game.odds2 = game_e[2].get("C")
            with contextlib.suppress(IndexError):
                game.over = game_e[8].get("C")
            with contextlib.suppress(IndexError):
                game.gline = game_e[8].get("P")
            with contextlib.suppress(IndexError):
                game.under = game_e[9].get("C")
        return game
            
    def __str__(self) -> str:
        return ', '.join(
            str(item) for item in (
                self.country, self.league, self.date, self.hometeam, self.awayteam,
                self.odds1, self.oddsX, self.odds2, self.over, self.gline, self.under))


with open("18july.json", encoding="UTF-8") as f:
    jsondata = json.load(f)

games = [Game.from_json(game) for game in jsondata["Value"]]

for game in games:
    print(game)

but it gave error like this:

Traceback (most recent call last):
  File "c:\Users\monst\Downloads\python_files\vcolav.py", line 64, in <module>  
    games = [Game.from_json(game) for game in jsondata["Value"]]
  File "c:\Users\monst\Downloads\python_files\vcolav.py", line 64, in <listcomp>
    games = [Game.from_json(game) for game in jsondata["Value"]]
  File "c:\Users\monst\Downloads\python_files\vcolav.py", line 36, in from_json 
    game.hometeam = game_a.get("O1")
AttributeError: 'builtin_function_or_method' object has no attribute 'get'

you know there are 11 items;
Three items (country, league, date) always can be found in json file
but rest 8 items can be missing, so they have to be replaced “None”
Eight items (homeaway, awayteam, odds1, oddsX, odds2, over, gline, under)