如何使用嵌套字典“展平”列表？

Question

我正在使用带有嵌套列表和嵌套字典的列表和字典。我想将它们压平成一个数据框。

我想做的大学作业是创建一个有关橄榄球比赛中球员统计数据的数据框。我正在寻找一些易于重复的代码，当我为 N 个匹配调用 api 时，我可以使用它们来增长数据帧或列表。

我有：

两个包含嵌套字典的列表，格式相同。一支是客队，一支是主队。两者都是球员名单及其表现统计数据。
具有一组值的字典，其中包含匹配的数据

我想要：

“展平”列表中的嵌套字典，以拥有一个包含所有数据的列表，并将“主场”或“客场”作为值添加到相关团队
合并两个扁平列表
创建一个数据框，其中每一行都是列表条目之一。
将单数字典添加到每一行。

理想情况下，我想要一种有效的方法来使用“优雅”的代码来实现这一目标。我尝试过（循环失败）：

   pd.json_normalize(results['home']['teamsheet'], sep = '_')

这对于两个团队的团队表都很有效。另外我想做的是将相同的匹配数据添加到 DF 中的每一行。

我想最终得到这样的结果，但比赛中每个玩家一行，并且此数据超过许多（250+）场比赛：

当我为 x 提供一个值时，这才起作用。我一直无法找出循环。也许循环不是我需要的，但这似乎是可行的方法。

我的数据：

目标df：

df = [['id', 'comp_id', 'comp_name', 'season', 'status', 'match_minute', 'venue', 'game_week', 'home_team', 'away_team',
        'home_id', 'away_id', 'date', 'home_score', 'away_score', 'home_tries', 'away_tries', 'home_conversions', 'away_conversions',
        'home_penalties', 'away_penalties', 'home_drop_goals', 'away_drop_goals', 'round_id', 'stage', 'updated', 'player_id',
        'name', 'position', 'substitute', 'tries', 'tackles', 'missed_conversion_goals', 'dominant_tackles', 'penalties_conceded',
        'rucks_won', 'tackle_success', 'defenders_beaten', 'offload', 'drop_goals_converted', 'runs', 'metres', 'missed_penalty_goals',
        'points', 'conversion_goals', 'try_assists', 'drop_goal_missed', 'lineouts_won', 'missed_tackles', 'penalty_goals',
        'passes', 'bad_passes', 'turnovers_conceded', 'rucks_lost', 'clean_breaks', 'team']]
df = pd.DataFrame(df)
df.columns = df.iloc[0]
df = df[1:]

匹配数据：

{'id': 3195835,
 'comp_id': 2142,
 'comp_name': 'Super Rugby Aotearoa',
 'season': '2020',
 'status': 'Result',
 'match_minute': 80,
 'venue': 'Orangetheory Stadium',
 'game_week': 9,
 'home_team': 'Crusaders',
 'away_team': 'Highlanders',
 'home_id': 305,
 'away_id': 302,
 'date': '2020-08-09T03:35:00+00:00',
 'home_score': 32,
 'away_score': 22,
 'home_tries': 4,
 'away_tries': 3,
 'home_conversions': 3,
 'away_conversions': 2,
 'home_penalties': 2,
 'away_penalties': 1,
 'home_drop_goals': 0,
 'away_drop_goals': 0,
 'round_id': 9,
 'stage': 'Regular Season',
 'updated': '2024-02-09T16:05:35+00:00',
 'player_id': 156702,
 'name': 'Sevu Reece',
 'position': 14,
 'substitute': False,
 'tries': '0',
 'tackles': '4',
 'missed_conversion_goals': '0',
 'dominant_tackles': '0',
 'penalties_conceded': '0',
 'rucks_won': '0',
 'tackle_success': '0.57',
 'defenders_beaten': '8',
 'offload': '1',
 'drop_goals_converted': '0',
 'runs': '10',
 'metres': '104',
 'missed_penalty_goals': '0',
 'points': '0',
 'conversion_goals': '0',
 'try_assists': '0',
 'drop_goal_missed': '0',
 'lineouts_won': '1',
 'missed_tackles': '3',
 'penalty_goals': '0',
 'passes': '6',
 'bad_passes': '0',
 'turnovers_conceded': '0',
 'rucks_lost': '0',
 'clean_breaks': '2',
 'team': 'home'}

球队数据（客队数据或多或少相同）

[{'player_id': 168972,
  'name': 'Will Jordan',
  'position': 15,
  'substitute': False,
  'match_stats': {'tries': '0',
   'tackles': '3',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '0',
   'rucks_won': '0',
   'tackle_success': '1.00',
   'defenders_beaten': '3',
   'offload': '0',
   'drop_goals_converted': '0',
   'runs': '14',
   'metres': '118',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '2',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '0',
   'penalty_goals': '0',
   'passes': '10',
   'bad_passes': '1',
   'turnovers_conceded': '3',
   'rucks_lost': '0',
   'clean_breaks': '2'}},
 {'player_id': 156702,
  'name': 'Sevu Reece',
  'position': 14,
  'substitute': False,
  'match_stats': {'tries': '0',
   'tackles': '4',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '0',
   'rucks_won': '0',
   'tackle_success': '0.57',
   'defenders_beaten': '8',
   'offload': '1',
   'drop_goals_converted': '0',
   'runs': '10',
   'metres': '104',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '1',
   'missed_tackles': '3',
   'penalty_goals': '0',
   'passes': '6',
   'bad_passes': '0',
   'turnovers_conceded': '0',
   'rucks_lost': '0',
   'clean_breaks': '2'}},
 {'player_id': 168960,
  'name': 'Braydon Ennor',
  'position': 13,
  'substitute': False,
  'match_stats': {'tries': '1',
   'tackles': '9',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '0',
   'rucks_won': '0',
   'tackle_success': '0.82',
   'defenders_beaten': '3',
   'offload': '1',
   'drop_goals_converted': '0',
   'runs': '8',
   'metres': '32',
   'missed_penalty_goals': '0',
   'points': '5',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '2',
   'penalty_goals': '0',
   'passes': '2',
   'bad_passes': '0',
   'turnovers_conceded': '2',
   'rucks_lost': '0',
   'clean_breaks': '3'}},
 {'player_id': 133770,
  'name': 'Jack Goodhue',
  'position': 12,
  'substitute': False,
  'match_stats': {'tries': '0',
   'tackles': '10',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '1',
   'rucks_won': '0',
   'tackle_success': '0.77',
   'defenders_beaten': '3',
   'offload': '2',
   'drop_goals_converted': '0',
   'runs': '13',
   'metres': '49',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '3',
   'penalty_goals': '0',
   'passes': '15',
   'bad_passes': '0',
   'turnovers_conceded': '2',
   'rucks_lost': '0',
   'clean_breaks': '2'}},
 {'player_id': 140028,
  'name': 'George Bridge',
  'position': 11,
  'substitute': False,
  'match_stats': {'tries': '2',
   'tackles': '5',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '0',
   'rucks_won': '0',
   'tackle_success': '1.00',
   'defenders_beaten': '2',
   'offload': '1',
   'drop_goals_converted': '0',
   'runs': '9',
   'metres': '43',
   'missed_penalty_goals': '0',
   'points': '10',
   'conversion_goals': '0',
   'try_assists': '1',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '0',
   'penalty_goals': '0',
   'passes': '4',
   'bad_passes': '0',
   'turnovers_conceded': '2',
   'rucks_lost': '0',
   'clean_breaks': '3'}},
 {'player_id': 126474,
  'name': "Richie Mo'unga",
  'position': 10,
  'substitute': False,
  'match_stats': {'tries': '1',
   'tackles': '9',
   'missed_conversion_goals': '1',
   'dominant_tackles': '0',
   'penalties_conceded': '1',
   'rucks_won': '0',
   'tackle_success': '0.82',
   'defenders_beaten': '1',
   'offload': '2',
   'drop_goals_converted': '0',
   'runs': '12',
   'metres': '94',
   'missed_penalty_goals': '0',
   'points': '17',
   'conversion_goals': '3',
   'try_assists': '1',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '2',
   'penalty_goals': '2',
   'passes': '28',
   'bad_passes': '0',
   'turnovers_conceded': '0',
   'rucks_lost': '0',
   'clean_breaks': '3'}},
 {'player_id': 118824,
  'name': 'Bryn Hall',
  'position': 9,
  'substitute': False,
  'match_stats': {'tries': '0',
   'tackles': '1',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '1',
   'rucks_won': '0',
   'tackle_success': '0.33',
   'defenders_beaten': '0',
   'offload': '0',
   'drop_goals_converted': '0',
   'runs': '7',
   'metres': '34',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '2',
   'penalty_goals': '0',
   'passes': '43',
   'bad_passes': '0',
   'turnovers_conceded': '1',
   'rucks_lost': '0',
   'clean_breaks': '3'}},
 {'player_id': 115806,
  'name': 'Joe Moody',
  'position': 1,
  'substitute': False,
  'match_stats': {'tries': '0',
   'tackles': '4',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '0',
   'rucks_won': '0',
   'tackle_success': '1.00',
   'defenders_beaten': '0',
   'offload': '0',
   'drop_goals_converted': '0',
   'runs': '1',
   'metres': '2',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '0',
   'penalty_goals': '0',
   'passes': '0',
   'bad_passes': '0',
   'turnovers_conceded': '0',
   'rucks_lost': '0',
   'clean_breaks': '0'}},
 {'player_id': 112860,
  'name': 'Codie Taylor',
  'position': 2,
  'substitute': False,
  'match_stats': {'tries': '0',
   'tackles': '10',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '1',
   'rucks_won': '0',
   'tackle_success': '1.00',
   'defenders_beaten': '1',
   'offload': '2',
   'drop_goals_converted': '0',
   'runs': '9',
   'metres': '68',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '7',
   'missed_tackles': '0',
   'penalty_goals': '0',
   'passes': '7',
   'bad_passes': '0',
   'turnovers_conceded': '1',
   'rucks_lost': '0',
   'clean_breaks': '2'}},
 {'player_id': 132000,
  'name': 'Michael Alaalatoa',
  'position': 3,
  'substitute': False,
  'match_stats': {'tries': '0',
   'tackles': '8',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '1',
   'rucks_won': '0',
   'tackle_success': '0.80',
   'defenders_beaten': '0',
   'offload': '0',
   'drop_goals_converted': '0',
   'runs': '4',
   'metres': '6',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '2',
   'penalty_goals': '0',
   'passes': '1',
   'bad_passes': '0',
   'turnovers_conceded': '0',
   'rucks_lost': '0',
   'clean_breaks': '0'}},
 {'player_id': 62526,
  'name': 'Sam Whitelock',
  'position': 4,
  'substitute': False,
  'match_stats': {'tries': '0',
   'tackles': '10',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '0',
   'rucks_won': '0',
   'tackle_success': '0.91',
   'defenders_beaten': '0',
   'offload': '2',
   'drop_goals_converted': '0',
   'runs': '4',
   'metres': '2',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '1',
   'penalty_goals': '0',
   'passes': '6',
   'bad_passes': '1',
   'turnovers_conceded': '1',
   'rucks_lost': '0',
   'clean_breaks': '0'}},
 {'player_id': 149664,
  'name': 'Quinten Strange',
  'position': 5,
  'substitute': False,
  'match_stats': {'tries': '0',
   'tackles': '3',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '3',
   'rucks_won': '0',
   'tackle_success': '0.50',
   'defenders_beaten': '1',
   'offload': '0',
   'drop_goals_converted': '0',
   'runs': '4',
   'metres': '6',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '3',
   'penalty_goals': '0',
   'passes': '0',
   'bad_passes': '0',
   'turnovers_conceded': '0',
   'rucks_lost': '0',
   'clean_breaks': '0'}},
 {'player_id': 130416,
  'name': 'Tom Sanders',
  'position': 6,
  'substitute': False,
  'match_stats': {'tries': '0',
   'tackles': '5',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '1',
   'rucks_won': '0',
   'tackle_success': '0.71',
   'defenders_beaten': '0',
   'offload': '0',
   'drop_goals_converted': '0',
   'runs': '3',
   'metres': '0',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '2',
   'penalty_goals': '0',
   'passes': '0',
   'bad_passes': '0',
   'turnovers_conceded': '1',
   'rucks_lost': '0',
   'clean_breaks': '0'}},
 {'player_id': 165000,
  'name': 'Tom Christie',
  'position': 7,
  'substitute': False,
  'match_stats': {'tries': '0',
   'tackles': '13',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '1',
   'rucks_won': '0',
   'tackle_success': '0.87',
   'defenders_beaten': '0',
   'offload': '0',
   'drop_goals_converted': '0',
   'runs': '7',
   'metres': '15',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '2',
   'penalty_goals': '0',
   'passes': '3',
   'bad_passes': '0',
   'turnovers_conceded': '1',
   'rucks_lost': '0',
   'clean_breaks': '0'}},
 {'player_id': 126444,
  'name': 'Whetu Douglas',
  'position': 8,
  'substitute': False,
  'match_stats': {'tries': '0',
   'tackles': '10',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '1',
   'rucks_won': '0',
   'tackle_success': '0.83',
   'defenders_beaten': '1',
   'offload': '3',
   'drop_goals_converted': '0',
   'runs': '15',
   'metres': '23',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '2',
   'penalty_goals': '0',
   'passes': '7',
   'bad_passes': '1',
   'turnovers_conceded': '2',
   'rucks_lost': '0',
   'clean_breaks': '0'}},
 {'player_id': 157056,
  'name': 'Andrew Makalio',
  'position': 16,
  'substitute': True,
  'match_stats': {'tries': '0',
   'tackles': '4',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '1',
   'rucks_won': '0',
   'tackle_success': '0.67',
   'defenders_beaten': '0',
   'offload': '0',
   'drop_goals_converted': '0',
   'runs': '2',
   'metres': '6',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '6',
   'missed_tackles': '2',
   'penalty_goals': '0',
   'passes': '0',
   'bad_passes': '0',
   'turnovers_conceded': '0',
   'rucks_lost': '0',
   'clean_breaks': '0'}},
 {'player_id': 134226,
  'name': 'George Bower',
  'position': 17,
  'substitute': True,
  'match_stats': {'tries': '0',
   'tackles': '8',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '0',
   'rucks_won': '0',
   'tackle_success': '0.62',
   'defenders_beaten': '0',
   'offload': '0',
   'drop_goals_converted': '0',
   'runs': '6',
   'metres': '5',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '5',
   'penalty_goals': '0',
   'passes': '2',
   'bad_passes': '0',
   'turnovers_conceded': '0',
   'rucks_lost': '0',
   'clean_breaks': '0'}},
 {'player_id': 147540,
  'name': 'Oli Jager',
  'position': 18,
  'substitute': True,
  'match_stats': {'tries': '0',
   'tackles': '0',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '0',
   'rucks_won': '0',
   'tackle_success': '0.00',
   'defenders_beaten': '0',
   'offload': '0',
   'drop_goals_converted': '0',
   'runs': '0',
   'metres': '0',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '0',
   'penalty_goals': '0',
   'passes': '0',
   'bad_passes': '0',
   'turnovers_conceded': '0',
   'rucks_lost': '0',
   'clean_breaks': '0'}},
 {'player_id': 62514,
  'name': 'Luke Romano',
  'position': 19,
  'substitute': True,
  'match_stats': {'tries': '0',
   'tackles': '4',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '0',
   'rucks_won': '0',
   'tackle_success': '1.00',
   'defenders_beaten': '0',
   'offload': '1',
   'drop_goals_converted': '0',
   'runs': '3',
   'metres': '6',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '0',
   'penalty_goals': '0',
   'passes': '1',
   'bad_passes': '0',
   'turnovers_conceded': '0',
   'rucks_lost': '0',
   'clean_breaks': '0'}},
 {'player_id': 175506,
  'name': 'Sione Havili',
  'position': 20,
  'substitute': True,
  'match_stats': {'tries': '0',
   'tackles': '2',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '0',
   'rucks_won': '0',
   'tackle_success': '0.67',
   'defenders_beaten': '2',
   'offload': '1',
   'drop_goals_converted': '0',
   'runs': '4',
   'metres': '30',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '1',
   'penalty_goals': '0',
   'passes': '1',
   'bad_passes': '0',
   'turnovers_conceded': '0',
   'rucks_lost': '0',
   'clean_breaks': '1'}},
 {'player_id': 126342,
  'name': 'Mitchell Drummond',
  'position': 21,
  'substitute': True,
  'match_stats': {'tries': '0',
   'tackles': '2',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '0',
   'rucks_won': '0',
   'tackle_success': '1.00',
   'defenders_beaten': '0',
   'offload': '0',
   'drop_goals_converted': '0',
   'runs': '3',
   'metres': '5',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '0',
   'penalty_goals': '0',
   'passes': '32',
   'bad_passes': '0',
   'turnovers_conceded': '0',
   'rucks_lost': '0',
   'clean_breaks': '0'}},
 {'player_id': 173526,
  'name': 'Brett Cameron',
  'position': 22,
  'substitute': True,
  'match_stats': {'tries': '0',
   'tackles': '0',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '0',
   'rucks_won': '0',
   'tackle_success': '0.00',
   'defenders_beaten': '0',
   'offload': '0',
   'drop_goals_converted': '0',
   'runs': '0',
   'metres': '0',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '0',
   'penalty_goals': '0',
   'passes': '0',
   'bad_passes': '0',
   'turnovers_conceded': '0',
   'rucks_lost': '0',
   'clean_breaks': '0'}},
 {'player_id': 184710,
  'name': "Leicester Fainga'anuku",
  'position': 23,
  'substitute': True,
  'match_stats': {'tries': '0',
   'tackles': '1',
   'missed_conversion_goals': '0',
   'dominant_tackles': '0',
   'penalties_conceded': '0',
   'rucks_won': '0',
   'tackle_success': '1.00',
   'defenders_beaten': '0',
   'offload': '0',
   'drop_goals_converted': '0',
   'runs': '0',
   'metres': '0',
   'missed_penalty_goals': '0',
   'points': '0',
   'conversion_goals': '0',
   'try_assists': '0',
   'drop_goal_missed': '0',
   'lineouts_won': '0',
   'missed_tackles': '0',
   'penalty_goals': '0',
   'passes': '0',
   'bad_passes': '0',
   'turnovers_conceded': '0',
   'rucks_lost': '0',
   'clean_breaks': '0'}}]

Answer 1

我明白了：

将“匹配”字典转换为列表

resultList = list(results['match'].items())

将该列表附加到团队表中的每个列表中

for i in results['home']['teamsheet']:
    i.update(resultList)

使用 json_normalize

df = pd.json_normalize(results['home']['teamsheet'], sep = '_')

连接数据帧

完成。

干杯！希望这对处于我的情况的其他人有所帮助。

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