Python：机械化

Question

My problem i very short and sweet that I'm using mechanize module to sign into a website, but how to find out that a user has successfully signed in or not. for eg.

br = open("http://xyz.com/signin")
br['login'] = xxxx
br['password'] = xxx
result = br.submit().read()
f  = open('s.html', 'w')
f.write(result)
f.close

Now if login information is true s.html will contain next redirected page, and if information is false it will contain error page. Now how to find out that username annd pasword are true for a user......thanks in advance

Answer 1

You have to look at the page content that you were served.

If it has the string

login failed

Or similar then you know it failed.

Answer 2

It usually redirects to a different page if login is successful else it remains on the same page and an error message appears

You could use something like this

if br.geturl()==("https://address of the page after login"):
        print "SUCCESS"

Answer 3

You could use br.geturl() and check if it's the URL when you login or not. Let's say it's xyz.com/welcome .