How to implement real-time weather query function using Python and Baidu Map API

Method of using Python and Baidu Map API to implement real-time weather query function

Overview:
Weather query is one of the functions that we often need to use in our daily lives. Using the Python programming language and Baidu Map API, we can quickly implement real-time weather query functions. This article will introduce how to use Python and Baidu Map API to obtain real-time weather information, and show corresponding code examples.

Step 1: Apply for Baidu Map API Key
First, we need to apply for an API key for Baidu Map Open Platform. Please go to Baidu Map Open Platform (http://lbsyun.baidu.com/) to register and log in, and then create a new application. During the application creation process, the system will assign you a unique key, which will be used for subsequent API calls.

Step 2: Install the necessary Python libraries
We need to install two Python libraries: requests and json. Use the following command to install these libraries in the command prompt or terminal:
pip install requests
pip install json

Step Three: Write the Code
The following is an example using Python and Baidu Map API to obtain Sample code for real-time weather information:

import requests
import json

def get_weather(location):
    # 获取百度地图API密钥
    ak = "your_api_key"  # 替换为自己的API密钥
    
    # 构造天气查询的url
    url = "http://api.map.baidu.com/weather/v1/?district_id=" + location + "&data_type=all&ak=" + ak
    
    # 发送GET请求并获取返回结果
    response = requests.get(url)
    
    # 解析JSON格式的返回结果
    result = json.loads(response.text)
    
    # 天气信息的结构在result["result"]["forecasts"]中，这里我们获取当天的天气信息
    weather_info = result["result"]["forecasts"][0]["casts"][0]
    
    # 获取天气和温度信息
    weather = weather_info["text_day"]
    temperature = weather_info["daytemp"]
    
    # 输出天气和温度信息
    print("天气：" + weather)
    print("温度：" + temperature + "℃")

# 调用函数查询指定地区的天气
get_weather("城市代码")

In the above code, you need to replace your_api_key with your Baidu Map API key and "city code"Replace with the city code of the area you want to query. For example, if you want to check the weather in Beijing, you can replace "city code" with "110000".

Step 4: Run the code
Save the above code as a .py file and run the file in the command prompt or terminal. The program will query the real-time weather information of the corresponding area based on the city code you provide, and output the weather and temperature.

Note:

• According to the requirements of Baidu Map API, the city code of the query city needs to be a six-digit string. For example, the city code of Beijing is "110000 ".
• When using Baidu Map API, please follow the usage rules of Baidu Map Open Platform and do not abuse API resources.

Conclusion:
By using Python and Baidu Map API, we can easily implement real-time weather query function. Using the above code example, you can query real-time weather information in any region according to your needs. Happy programming!

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