Python Programming Practice: How to Use Baidu Map API to Implement Walking Navigation Function

Python Programming Practice: How to Use Baidu Map API to Implement Walking Navigation Function

Introduction:
As a popular map application, Baidu Map not only provides map browsing functions, but also provides a wealth of API for developers to use. This article will use Python programming to implement the walking navigation function using Baidu Map API, and provide code examples for readers' reference.

1. Register a Baidu Map developer account and obtain an API key
   First, we need to register a Baidu Map developer account and obtain an API key. The specific steps are as follows:
2. Visit the Baidu Map Open Platform website (http://lbsyun.baidu.com/) and click "Developer Registration" to register an account.
3. After registration is completed, log in to the open platform and click "Create Application" to create a new application.
4. After the application is created, enter the "Console" page and click "Application List" to obtain the API key.

5. Install Baidu Map API Python SDK
   Next, we need to install Baidu Map API Python SDK to implement geocoding, navigation and other functions. Use the pip command to install:

   pip install baidu-aip

6. Python code example to implement walking navigation function
   The following is a simple sample code to demonstrate how to implement walking navigation function through Baidu Map API :

   from aip import AipWalk
   
   # 设置API密钥
   APP_ID = 'your-app-id'
   API_KEY = 'your-api-key'
   SECRET_KEY = 'your-secret-key'
   
   # 创建步行导航实例
   walk_client = AipWalk(APP_ID, API_KEY, SECRET_KEY)
   
   # 调用步行路径规划接口
   result = walk_client.walking('北京天安门', '北京故宫')
   
   # 解析步行导航结果
   status = result['status']
   if status == 0:
    route = result['result']['routes'][0]
    distance = route['distance']
    duration = route['duration']
    steps = route['steps']
    print('步行路径规划成功')
    print('总距离：%d米' % distance)
    print('预计耗时：%d分钟' % duration)
    for i, step in enumerate(steps):
        print('步骤%d：%s' % (i+1, step['stepInstruction']))
   else:
    print('步行路径规划失败')
   

Code explanation:

• First, create a walking navigation instance by importing the AipWalk class.
• After the walking navigation instance is created, call the walking method and pass in the names or longitude and latitude of the starting point and end point to obtain the walking path planning results.
• Parse the returned results, obtain the total distance, total time taken and detailed step information of the path, and print them out.

4. Conclusion
   Through the introduction of this article, we have learned how to use Python programming and Baidu Map API to implement walking navigation function. Readers can register for a Baidu Map developer account, obtain an API key, and use the walking navigation interface provided by the Baidu Map API Python SDK to implement corresponding functions. I hope this article can be helpful to readers in developing applications based on Baidu Maps.

(Note: 'your-app-id', 'your-api-key', 'your -secret-key' needs to be replaced with your own API key.)

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