Python字典KeyError深度解析与API数据处理最佳实践

import requests

api_key = "YOUR_API_KEY"  # 请替换为您的实际API密钥
url_currentmatches = f"https://api.cricapi.com/v1/cricScore?apikey={api_key}"

try:
    response = requests.get(url_currentmatches)
    response.raise_for_status() # 检查HTTP请求是否成功
    result = response.json()
except requests.exceptions.RequestException as e:
    print(f"API请求失败: {e}")
    exit()
except ValueError:
    print("API响应不是有效的JSON格式。")
    exit()

if not result or "data" not in result or not isinstance(result["data"], list):
    print("API响应数据格式不符合预期。")
    exit()

amount_of_matches = len(result["data"])
match_number = 0 # 初始索引应从0开始

while match_number < amount_of_matches:
    current_match_data = result["data"][match_number]

    # 关键调试步骤：打印当前处理的比赛数据
    print(f"\n--- 正在处理第 {match_number} 场比赛的数据 ---")
    print(current_match_data) 

    # 检查 'teamInfo' 键是否存在
    if "teamInfo" in current_match_data:
        try:
            name1 = current_match_data["teamInfo"][0]["name"]
            name2 = current_match_data["teamInfo"][1]["name"]

            important_countries = ["Pakistan","New Zealand","Australia","Sri Lanka","South Africa","West Indies","England","India"]
            for country in important_countries:
                if country in name1 or country in name2: # 使用更简洁的 'in' 操作符
                    print(f"国家匹配: {name1} vs {name2} (涉及国家: {country})")
                    break # 找到一个匹配即可
            else:
                print(f"未找到重要国家匹配: {name1} vs {name2}")

        except IndexError:
            print(f"KeyError: 'teamInfo' 列表索引超出范围，可能缺少队伍信息。比赛ID: {current_match_data.get('id', '未知')}")
        except KeyError as e:
            print(f"KeyError: 无法访问 'teamInfo' 下的键 '{e}'。比赛ID: {current_match_data.get('id', '未知')}")
    else:
        print(f"警告: 当前比赛数据中缺少 'teamInfo' 键。比赛ID: {current_match_data.get('id', '未知')}")

    match_number += 1

match_number=-1
amount_of_matches = len(result["data"])
while True:
    match_number += 1 # 在这里递增
    if match_number == amount_of_matches:
        break
    else: 
        name1 = result["data"][match_number]["teamInfo"][0]["name"] # 第一次访问时 match_number 已经是 0
        # ...

# 使用 for 循环遍历列表元素，更Pythonic且不易出错
for i, match_data in enumerate(result["data"]):
    # 在这里处理 match_data，即 result["data"][i]
    print(f"\n--- 正在处理第 {i} 场比赛的数据 ---")
    print(match_data)

    if "teamInfo" in match_data:
        try:
            name1 = match_data["teamInfo"][0]["name"]
            name2 = match_data["teamInfo"][1]["name"]
            # ... 后续处理逻辑
        except (IndexError, KeyError) as e:
            print(f"处理比赛 {i} 时发生错误: {e}")
    else:
        print(f"警告: 第 {i} 场比赛缺少 'teamInfo' 键。")

for match_data in result["data"]:
    try:
        name1 = match_data["teamInfo"][0]["name"]
        name2 = match_data["teamInfo"][1]["name"]
        # ... 正常处理逻辑
        print(f"成功获取队伍名称: {name1} vs {name2}")
    except KeyError as e:
        print(f"警告: 缺少键 '{e}'。当前比赛数据可能不完整。")
        # 可以选择跳过当前比赛或记录错误
        continue 
    except IndexError:
        print("警告: 'teamInfo' 列表索引超出范围，可能缺少队伍信息。")
        continue

for match_data in result["data"]:
    team_info = match_data.get("teamInfo")
    if team_info and isinstance(team_info, list) and len(team_info) >= 2:
        name1 = team_info[0].get("name")
        name2 = team_info[1].get("name")

        if name1 and name2: # 确保名称也存在
            print(f"成功获取队伍名称: {name1} vs {name2}")
            # ... 后续处理逻辑
        else:
            print("警告: 'teamInfo' 中队伍名称缺失。")
    else:
        print("警告: 缺少 'teamInfo' 键或其结构不符合预期。")