使用Python和Mechanize登录网站

Question

I'm trying to login to portfolio123.com using Mechanize. For some reason I am not getting the LoginPassword field.

Here is the code so far:

import mechanize

br = mechanize.Browser()
br.select_form(nr=0)
br['LoginUsername'] = user_name 
br['LoginPassword'] = password # This line does not work yet. 

The last line does not work. The control is not found. We can confirm this by running the following code:

br.form = list(br.forms())[0]
for control in br.form.controls:
    print "type=%s, name=%s value=%s" % (control.type, control.name, br[control.name])

returns:

type=text, name=LoginUsername value=xxxxx
type=submit, name=Login value=Login
type=hidden, name=url value=index.jsp

But when I open the url in a browser the pasword field is there. So how do I get to it?

Answer 1

It is not quite clear why Mechanize doesn't see the LoginPassword field. I've tried multiple things: set a User-Agent , tried prettifying the response with BeautifulSoup thinking about HTML-parsing problems, tried to modify the password input attributes on the fly etc.

As a workaround, robobrowser can handle the login form without any problems:

import robobrowser

url = "https://www.portfolio123.com/login.jsp"
browser = robobrowser.RoboBrowser()
browser.open(url)

form = browser.get_form()
form['LoginUsername'] = 'Username'
form['LoginPassword'] = 'Password'
browser.submit_form(form)