urllib2 urlopen

Python write crawlers use the urllib2 method, pythonurllib2 Use urllib2 for python write Crawlers The Usage Details of urllib2 are sorted out. 1. Proxy Settings By default, urllib2 uses the environment variable http_proxy to set HTTP Proxy. If you want to explicitly control the Proxy in the program without bein

instead of the global Urlopen Method.2.Timeout settingsIn the old version of Python (before Python2.6). The Urllib2 API does not expose the Timeout setting. To set the timeout value, you can only change the global timeout value of the Socket.Import urllib2 Import socket socket.setdefaulttimeout (10) # 10 seconds after timeout

Urlopen method. 2.Timeout settingsIn older Python (before Python2.6), the Urllib2 API did not expose the timeout setting, and to set the timeout value, only the global timeout value of the Socket could be changed. Import urllib2 Import socket Socket.setdefaulttimeout (10) # 10 seconds after timeout urllib2.socket.s

simply calling the opener open method instead of the global Urlopen method. 2.Timeout settings In the old Python (Python2.6), the Urllib2 API did not expose Timeout settings, and to set the Timeout value, only the Socket's global Timeout value could be changed. Copy Code code as follows: Import Urllib2 Import socket Socket.setdefaulttimeou

Basic usage of the python urllib2 package1. urllib2.urlopen (request) Url = "http://www.baidu.com" # url can also be the path of other protocols, such as ftpvalues = {'name': 'Michael Foord ', 'location': 'northampt', language ': 'python'} data = urllib. urlencode (values) user_agent = 'mozilla/4.0 (compatible; MSIE 5.5; Windows NT) 'headers = {'user-agent': user

Summary of the usage of the urllib2 module in Python network programming, pythonurllib2 I. Basic Applications import urllib2url = r'http://www.baidu.com'html = urllib2.urlopen(url).read()print html The client communicates with the server through request and response. The client first sends a request to the server and then receives the response returned by the ser

, instead of simply calling the opener open method instead of the global Urlopen method.2.Timeout settingsIn the old Python (Python2.6), the Urllib2 API did not expose Timeout settings, and to set the Timeout value, only the Socket's global Timeout value could be changed.[python] view plain copy import URLLIB2 import socket Socket.setdefaulttimeout (10) # timeout

Document directory 1. Capture simple web pages 2. Download an object 3. basic use of urllib 4. basic use of urllib2 I recently learned Python again. Unfortunately, I didn't use it for work. I could only use my spare time to play it out.1. Capture simple web pages # coding=utf-8import urllib2response = urllib2.urlopen('http://www.pythonclub.org/python-net

settings, but instead uses the current data to replace the previousRequest.add_header (Key,val) key is the header name, Val is the header value, two parameters are stringRequest.add_unredirected_header (Key,val) Ibid, but not added to redirect requestRequest.set_proxy (Host,type) prepares the request to the server. Replace the original host with host and replace the original request type with type3, openerThe basic Urlopen () function does not suppor