Python usage: post an HTTP request and schedule a task

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Recently, I used my free time to look at some modules in Python. I feel this feature is so good and so powerful.
(1) Use it to post an HTTP request:

Import urllib, urllib2, cookielib
Def post3 ():
# For mail.sina.com.cn

Cj = cookielib. cookiejar ()
Url_login = 'HTTP: // mail.sina.com.cn/cgi-bin/login.cgi'
Body = ('logintype', 'login'), ('U', 'username '),
('Psw ','********'))
Opener = urllib2.build _ opener (urllib2.httpcookieprocessor (CJ ))
# Opener. addheaders = [('user-agent', 'Opera/123')]
Opener. addheaders = [('user-agent ',
'Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1) ')]
Urllib2.install _ opener (opener)
Req = urllib2.request (url_login, urllib. urlencode (body ))
U = urllib2.urlopen (req)
Print U. Read (). Decode ('utf-8'). encode ('gbk ')

 

In the afternoon, I tried Python's HTTP-related class method and used the above Code to log on to Sina mail. I tried it for a while,
The most important thing is the User-Agent, which is supported by the above two browsers. It is estimated that the Default User-Agent of Python cannot be verified by Sina.com.

It is quite convenient for python to write this HTTP method code.

(2) Write a small task execution task on a regular basis. This is a single-threaded version, and it is easy to change it to multiple threads.

 

#! /Usr/bin/ENV Python
# Coding = UTF-8

Import thread, time

Def task ():
'''
Here we can execute some task to be scheduled every n seconds
'''
Print "task doing ......"

Def main (n ):
T = time. Time ()
Start_t = T
End_t = start_t + 60*60*72
# While (T <end_t ):
While true:
Task ()
Time. Sleep (N)
T = time. Time ()

If _ name _ = "_ main __":

Try:
Main (5)
Except t keyboardinterrupt:
Print "system exit ......"
SYS. Exit (1)