Upload Weather Script.

Abgreifen von wetterdaten über API

scripte/wetterdaten/.env

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+OWM_API_KEY=ea645349e2fbb2ff573104bdd6763604
+DB_USER=root
+DB_PASSWORD=dein_db_passwort
+DB_HOST=127.0.0.1
+DB_PORT=3306
+DB_NAME=weather_db

scripte/wetterdaten/README.md

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+**1. Voraussetzungen installieren**
+
+```
+pip install requests mariadb python-dotenv
+```
+
+**2. Datenbank Vorbereiten**
+
+```
+CREATE DATABASE weather_db;
+
+USE weather_db;
+
+CREATE TABLE weather_data (
+    id INT AUTO_INCREMENT PRIMARY KEY,
+    city VARCHAR(100) NOT NULL,
+    country VARCHAR(10),
+    temperature FLOAT,
+    feels_like FLOAT,
+    humidity INT,
+    pressure INT,
+    wind_speed FLOAT,
+    description VARCHAR(255),
+    recorded_at DATETIME DEFAULT CURRENT_TIMESTAMP
+);
+
+```
+
+**3. Script und .env Datei ablegen und bearbeiten**

scripte/wetterdaten/weather_script.py

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+import requests
+import mariadb
+import sys
+import os
+from datetime import datetime
+from dotenv import load_dotenv
+
+# Umgebungsvariablen aus .env laden
+load_dotenv()
+
+# --- Konfiguration ---
+API_KEY = os.getenv("OWM_API_KEY")
+CITY = "Berlin"
+UNITS = "metric"  # metric = Celsius, imperial = Fahrenheit
+
+DB_CONFIG = {
+    "user": os.getenv("DB_USER", "root"),
+    "password": os.getenv("DB_PASSWORD", ""),
+    "host": os.getenv("DB_HOST", "127.0.0.1"),
+    "port": int(os.getenv("DB_PORT", 3306)),
+    "database": os.getenv("DB_NAME", "weather_db"),
+}
+
+
+def fetch_weather(city):
+    """Ruft Wetterdaten von der OpenWeatherMap-API ab."""
+    url = "https://api.openweathermap.org/data/2.5/weather"
+    params = {
+        "q": city,
+        "appid": API_KEY,
+        "units": UNITS,
+        "lang": "de",
+    }
+
+    try:
+        response = requests.get(url, params=params, timeout=10)
+        response.raise_for_status()
+        return response.json()
+    except requests.exceptions.RequestException as e:
+        print(f"Fehler beim Abrufen der Wetterdaten: {e}")
+        return None
+
+
+def parse_weather(data):
+    """Extrahiert die relevanten Felder aus der API-Antwort."""
+    return {
+        "city": data["name"],
+        "country": data["sys"].get("country", ""),
+        "temperature": data["main"]["temp"],
+        "feels_like": data["main"]["feels_like"],
+        "humidity": data["main"]["humidity"],
+        "pressure": data["main"]["pressure"],
+        "wind_speed": data["wind"]["speed"],
+        "description": data["weather"][0]["description"],
+    }
+
+
+def save_to_db(weather):
+    """Speichert die Wetterdaten in der MariaDB."""
+    try:
+        conn = mariadb.connect(**DB_CONFIG)
+    except mariadb.Error as e:
+        print(f"Fehler bei der DB-Verbindung: {e}")
+        sys.exit(1)
+
+    cursor = conn.cursor()
+
+    sql = """
+        INSERT INTO weather_data
+        (city, country, temperature, feels_like, humidity,
+         pressure, wind_speed, description, recorded_at)
+        VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)
+    """
+    values = (
+        weather["city"],
+        weather["country"],
+        weather["temperature"],
+        weather["feels_like"],
+        weather["humidity"],
+        weather["pressure"],
+        weather["wind_speed"],
+        weather["description"],
+        datetime.now(),
+    )
+
+    try:
+        cursor.execute(sql, values)
+        conn.commit()
+        print(f"Daten gespeichert (ID: {cursor.lastrowid})")
+    except mariadb.Error as e:
+        print(f"Fehler beim Speichern: {e}")
+        conn.rollback()
+    finally:
+        cursor.close()
+        conn.close()
+
+
+def main():
+    if not API_KEY:
+        print("Fehler: OWM_API_KEY nicht gesetzt. Bitte in .env eintragen.")
+        sys.exit(1)
+
+    print(f"Rufe Wetterdaten für '{CITY}' ab...")
+    data = fetch_weather(CITY)
+
+    if data:
+        weather = parse_weather(data)
+        print(f"Temperatur: {weather['temperature']}°C, "
+              f"{weather['description']}")
+        save_to_db(weather)
+
+
+if __name__ == "__main__":
+    main()