NewsAPIで世界中のニュース記事を取得する実装ガイド！APIキー取得からPythonコード例まで

import requests
import json
from datetime import datetime, timedelta

# APIキーを設定
API_KEY = "YOUR_API_KEY"  # 取得したAPIキーに置き換え
BASE_URL = "https://newsapi.org/v2/everything"

# 検索パラメータ設定
params = {
    "q": "(AI OR 人工知能) AND 日本",  # キーワード検索
    "from": "2024-12-01T00:00:00",  # 開始日時
    "to": "2024-12-10T23:59:59",  # 終了日時
    "language": "jp",  # 日本語記事のみ
    "sortBy": "relevancy",  # 関連性順
    "pageSize": 10,  # 取得件数
    "apiKey": API_KEY
}

# APIリクエスト実行
response = requests.get(BASE_URL, params=params)

# レスポンス処理
if response.status_code == 200:
    data = response.json()
    articles = data.get("articles", [])
    
    print(f"取得した記事数: {len(articles)}")
    print(f"総記事数: {data.get('totalResults', 0)}\n")
    
    for i, article in enumerate(articles, 1):
        print(f"{i}. {article['title']}")
        print(f"   ソース: {article['source']['name']}")
        print(f"   公開日: {article['publishedAt']}")
        print(f"   URL: {article['url']}\n")
else:
    print(f"エラー: {response.status_code}")
    print(response.json())

import requests
from typing import Dict, List, Optional

class NewsAPIClient:
    def __init__(self, api_key: str):
        self.api_key = api_key
        self.base_url = "https://newsapi.org/v2"
    
    def search_articles(
        self,
        keyword: str,
        from_date: Optional[str] = None,
        to_date: Optional[str] = None,
        language: str = "en",
        sort_by: str = "relevancy",
        page_size: int = 10
    ) -> Optional[List[Dict]]:
        """
        記事を検索して取得
        
        Args:
            keyword: 検索キーワード
            from_date: 開始日時（ISO 8601形式）
            to_date: 終了日時（ISO 8601形式）
            language: 言語コード
            sort_by: ソート順
            page_size: 取得件数
        
        Returns:
            記事のリスト、エラー時はNone
        """
        endpoint = f"{self.base_url}/everything"
        
        params = {
            "q": keyword,
            "language": language,
            "sortBy": sort_by,
            "pageSize": page_size,
            "apiKey": self.api_key
        }
        
        if from_date:
            params["from"] = from_date
        if to_date:
            params["to"] = to_date
        
        try:
            response = requests.get(endpoint, params=params, timeout=10)
            response.raise_for_status()
            
            data = response.json()
            if data.get("status") == "ok":
                return data.get("articles", [])
            else:
                print(f"APIエラー: {data.get('message', '不明なエラー')}")
                return None
                
        except requests.exceptions.RequestException as e:
            print(f"リクエストエラー: {e}")
            return None

# 使用例
client = NewsAPIClient(api_key="YOUR_API_KEY")
articles = client.search_articles(
    keyword="Python programming",
    from_date="2024-12-01",
    language="en",
    page_size=5
)

if articles:
    for article in articles:
        print(f"{article['title']} - {article['source']['name']}")

{
  "status": "ok",
  "totalResults": 2338,
  "articles": [
    {
      "source": {
        "id": "wired",
        "name": "Wired"
      },
      "author": "Will Knight",
      "title": "Amazon Is Building a Mega AI Supercomputer",
      "description": "記事の概要...",
      "url": "https://www.wired.com/story/...",
      "urlToImage": "https://media.wired.com/photos/...",
      "publishedAt": "2024-12-03T18:13:31Z",
      "content": "記事本文の一部..."
    }
  ]
}

import requests
from collections import Counter
from datetime import datetime, timedelta

def analyze_keyword_trends(api_key: str, keyword: str, days: int = 7):
    """
    指定キーワードの過去N日間のトレンドを分析
    """
    # 日付範囲を計算
    to_date = datetime.now()
    from_date = to_date - timedelta(days=days)
    
    params = {
        "q": keyword,
        "from": from_date.strftime("%Y-%m-%dT00:00:00"),
        "to": to_date.strftime("%Y-%m-%dT23:59:59"),
        "language": "en",
        "sortBy": "publishedAt",
        "pageSize": 100,
        "apiKey": api_key
    }
    
    response = requests.get("https://newsapi.org/v2/everything", params=params)
    
    if response.status_code == 200:
        articles = response.json().get("articles", [])
        
        # ソース別記事数をカウント
        sources = Counter([a["source"]["name"] for a in articles])
        
        # 日別記事数を集計
        dates = Counter([a["publishedAt"][:10] for a in articles])
        
        print(f"\n=== {keyword} のトレンド分析（過去{days}日間） ===")
        print(f"総記事数: {len(articles)}\n")
        
        print("【主要ニュースソース TOP5】")
        for source, count in sources.most_common(5):
            print(f"  {source}: {count}記事")
        
        print("\n【日別記事数】")
        for date in sorted(dates.keys()):
            print(f"  {date}: {dates[date]}記事")
    else:
        print(f"エラー: {response.status_code}")

# 使用例
analyze_keyword_trends(
    api_key="YOUR_API_KEY",
    keyword="artificial intelligence",
    days=7
)