InvalidURL(RequestException,ValueError) InvalidHeader(RequestException,ValueError) ChunkedEncodingError(RequestException) StreamConsumedError(RequestException,TypeError) ContentDecodingError(RequestException,BaseHTTPError) 在实际应用的过程中,我们可以把请求放在try下,把可能发生的异常用except获取: whileTrue:#一直循环,...
import urllib.request url = 'http://example.com' headers = {'User-Agent': 'Mozilla/5.0'} req = urllib.request.Request(url, headers=headers) response = urllib.request.urlopen(req) html = response.read() print(html) 通过这种方式,我们可以模拟浏览器的行为,避免被某些网站的反爬虫机制拦截。 二...
从链接到表格，我们需要一种有效的方式来提取和解析这些数据。然而在处理网页数据时，我们常常面临着需要...
我得到的错误是: URL can't contain control characters. '/solr-sitesearch-output/10//0/ds_field_last_updated/desc?bundle_fq =procurement_notice&sm_vid_Institutions_fq=&sm_vid_Procurement_Type_fq=&sm_vid_Countries_fq=&sm_vid_Sectors_fq= &sm_vid_Languages_fq=English&sm_vid_Notice_Type_fq...
response.request_info, response.history, status=response.status, message=f"Received non-200 status: {response.status}", ) return await response.text() except aiohttp.ClientError as ce: print(f"Failed to fetch URL: {ce}")6.2 异常透明度与异常转换6.2.1 封装库或框架中的异常转换 ...
URLRequired(RequestException) TooManyRedirects(RequestException) MissingSchema(RequestException, ValueError) InvalidSchema(RequestException,ValueError) InvalidURL(RequestException,ValueError) InvalidHeader(RequestException,ValueError) ChunkedEncodingError(RequestException) ...
(url):print(f"Invalid URL:{url}")returnNonetry:response=requests.get(url)response.raise_for_status()# 检查是否有异常状态码returnresponse.contentexceptrequests.exceptions.RequestExceptionase:print(f"Error fetching{url}:{e}")returnNone# 测试content=fetch_url("ifcontent:print("Fetched content ...
from requests.exceptionsimportHTTPErrorforurlin[https://api.github.com,https://api.github.com/invalid]:try:response=requests.get(url)# If the response was successful,no Exception will be raised response.raise_for_status()except HTTPErrorashttp_err:print(fHTTPerror occurred:{http_err})# Python...
""" import http.client import urllib.request, urllib.parse, urllib.error import string import re import xml.etree.ElementTree as etree import os import stat import logging import traceback import hashlib import sys import ops from urllib.parse import urlparse from urllib.parse import urlunparse ...
return session.request(method=method, url=url, **kwargs) 下面就是已经封装好的http方法,包括get、options、head、post、put、patch、delete方法 def get(url, params=None, **kwargs): kwargs.setdefault('allow_redirects', True) return request('get', url, params=params, **kwargs) ...