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class foo(object):

    def __init__(self):
        self._browser = mechanize.Browser()

    def login(self):
        br = self._browser
        [...]
        br.submit()

    def do_some_stuff_while_logged_in(self):
        br = self._browser
        br.open('secret_site')
        [...]

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>>> try:
...     f = open('browser.session', 'w')
...     pickle.dump(foo._browser, f)
... finally:
...     f.close()

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pickle.PicklingError: Can't pickle <function <lambda> at 0x8532aac>: it's not found as mechanize._response.<lambda>

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cerealizer.NonCerealizableObjectError: Object of class/type '<type 'builtin_function_or_method'>' cannot be cerealized! Use cerealizer.register to extend Cerealizer support to other classes.

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class Myspace(object):
    
    def __init__(self):
        self._browser = mechanize.Browser()
        self.login()
    
    def login(self):
        config = ConfigParser()
        config.readfp(open('myspace.cfg'))
        email = config.get('login', 'email')
        password = config.get('login', 'password')
        br = self._browser
        print 'Opening myspace.com...'
        br.open('http://myspace.com')
        emailBox = 'ctl00$ctl00$Main$cpMain$LoginBox$Email_Textbox'
        passwordBox = 'ctl00$ctl00$Main$cpMain$LoginBox$Password_Textbox'
        try:
            br.select_form(nr=1)
            br[emailBox] = email
            br[passwordBox] = password
        except ClientForm.ControlNotFoundError: # manchmal geht das erste nicht
            br.select_form(nr=2)
            br[emailBox] = email
            br[passwordBox] = password
        print 'Submitting login data...'
        br.submit()