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import re | ||
import time | ||
import requests | ||
import os | ||
from bs4 import BeautifulSoup | ||
from langchain.tools import DuckDuckGoSearchResults | ||
def getddgsearchurl(result, numresults=3): | ||
search = DuckDuckGoSearchResults(num_results=numresults) | ||
webresult = search.run(result) | ||
urls = re.findall(r"(https?://\S+)\]", webresult, re.MULTILINE) | ||
return urls | ||
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||
urls = getddgsearchurl("你知道今天有什么热点新闻吗") | ||
print(urls) | ||
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def Web_crawler(url: str) -> str: | ||
"""返回链接网址url正文内容,必须是合法的网址""" | ||
headers = { | ||
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/58.0.3029.110 Safari/537.3" | ||
} | ||
result = '' | ||
try: | ||
requests.packages.urllib3.disable_warnings() | ||
response = requests.get(url, headers=headers, verify=False, timeout=5, stream=True) | ||
if response.status_code == 404: | ||
print("Page not found:", url) | ||
return "" | ||
content_length = int(response.headers.get('Content-Length', 0)) | ||
if content_length > 5000000: | ||
print("Skipping large file:", url) | ||
return result | ||
soup = BeautifulSoup(response.text.encode(response.encoding), 'lxml', from_encoding='utf-8') | ||
body = "".join(soup.find('body').get_text().split('\n')) | ||
result = body | ||
except Exception as e: | ||
print('\033[31m') | ||
print("error url", url) | ||
print("error", e) | ||
print('\033[0m') | ||
return result | ||
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start_time = time.time() | ||
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for url in urls: | ||
print(Web_crawler(url)) | ||
print('-----------------------------') | ||
end_time = time.time() | ||
run_time = end_time - start_time | ||
# 打印运行时间 | ||
print(f"程序运行时间:{run_time}秒") |