使用 DuckDuckGo API 进行搜索

如果需要搜索引擎获取到搜索的内容，又不想支付其他费用，同时要求返回的格式为json格式，则可以使用 DuckDuckGo API

代码如下：

import argparse
import json
import time
from itertools import islice
from typing import Union

from duckduckgo_search import DDGS

DUCKDUCKGO_MAX_ATTEMPTS = 3

def safe_duckduckdo_results(results: Union[str, list]) -> str:
    """
        Return the results of a Google search in a safe format.
    Args:
        results (Union[str, list]): The search results.
    Returns:
        str: The results of the search.
    """
    if isinstance(results, list):
        safe_message = json.dumps(
            [result.encode("utf-8", "ignore").decode("utf-8") for result in results]
        )
    else:
        safe_message = results.encode("utf-8", "ignore").decode("utf-8")
    return safe_message

def web_search(query: str, num_results: int = 8) -> str:
    """Return the results of a Google search
    Args:
        query (str): The search query.
        num_results (int): The number of results to return.
    Returns:
        str: The results of the search.
    """
    search_results = []
    attempts = 0

    while attempts < DUCKDUCKGO_MAX_ATTEMPTS:
        if not query:
            return json.dumps(search_results)

        results = DDGS().text(query)
        search_results = list(islice(results, num_results))

        if search_results:
            break

        time.sleep(1)
        attempts += 1

    results = json.dumps(search_results, ensure_ascii=False, indent=4)
    return safe_duckduckdo_results(results)


if __name__ == "__main__":
    parser = argparse.ArgumentParser(description='Web search using DuckDuckGo')
    parser.add_argument('query', type=str, help='The search query')
    parser.add_argument('--num_results', type=int, default=8, help='The number of results to return')
    args = parser.parse_args()

    results = web_search(args.query, args.num_results)
    results = json.loads(results)
    print(results)