免费天气预报代码

import requests

def get_weather(city, api_key):
    url = f"http://api.openweathermap.org/data/2.5/weather?q={city}&appid={api_key}"
    response = requests.get(url)
    if response.status_code == 200:
        data = response.json()
        weather = data['weather'][0]['description']
        temperature = data['main']['temp'] - 273.15  # 将开尔文转换为摄氏度
        print(f"{city}的天气是：{weather}，温度是：{temperature:.2f}摄氏度")
    else:
        print("获取天气信息失败")

city = "北京"
api_key = "你的 API 密钥"
get_weather(city, api_key)