How to use the pywikibot.pagegenerators.GeneratorFactory function in pywikibot

def test_recentchanges_ns(self):
        """Test recentchanges generator with namespace."""
        gf = pagegenerators.GeneratorFactory(site=self.site)
        gf.handleArg('-ns:1')
        gf.handleArg('-recentchanges:10')
        gen = gf.getCombinedGenerator()
        self.assertIsNotNone(gen)
        self.assertPagesInNamespaces(gen, 1)

def test_prefixing_ns(self):
        """Test prefixindex generator with namespace filter."""
        gf = pagegenerators.GeneratorFactory(site=self.site)
        gf.handleArg('-ns:1')
        gf.handleArg('-prefixindex:a')
        gf.handleArg('-limit:10')
        gen = gf.getCombinedGenerator()
        self.assertIsNotNone(gen)
        self.assertPagesInNamespaces(gen, 1)

namespaces = []
    number = None
    until = None
    warnfile = None
    # a normal PageGenerator (which doesn't give hints, only Pages)
    hintlessPageGen = None
    optContinue = False
    optRestore = False
    restoredFiles = []
    dumpFileName = ''
    append = True
    newPages = None

    # Process global args and prepare generator args parser
    local_args = pywikibot.handle_args(args)
    genFactory = pagegenerators.GeneratorFactory()

    iwconf = InterwikiBotConfig()
    for arg in local_args:
        if iwconf.readOptions(arg):
            continue
        elif arg.startswith('-warnfile:'):
            warnfile = arg[10:]
        elif arg.startswith('-years'):
            # Look if user gave a specific year at which to start
            # Must be a natural number or negative integer.
            if len(arg) > 7 and (arg[7:].isdigit()
                                 or (arg[7] == '-' and arg[8:].isdigit())):
                startyear = int(arg[7:])
            else:
                startyear = 1
            # avoid problems where year pages link to centuries etc.

def main(*args):
    local_args = pywikibot.handle_args(args)
    gen_factory = pagegenerators.GeneratorFactory()

    for local_arg in local_args:
        if gen_factory.handleArg(local_arg):
            continue
        arg, sep, value = local_arg.partition(':')
        if arg == '-limitsize':
            options[arg[1:]] = int(value) if value != "" else 100
        elif arg == '-cachefiles':
            options[arg[1:]] = value or 'cache'

    gen = gen_factory.getCombinedGenerator()
    if not gen:
        pywikibot.bot.suggest_help(missing_generator=True)
        return False
    else:
        pywikibot.Site().login()

def main(*args):
    """
    Process command line arguments and invoke bot.

    If args is an empty list, sys.argv is used.

    @param args: command line arguments
    @type args: unicode
    """
    local_args = pywikibot.handle_args(args)
    gen_factory = pagegenerators.GeneratorFactory()
    options = {}
    for arg in local_args:
        if gen_factory.handleArg(arg):
            continue
        option, sep, value = arg.partition(':')
        option = option[1:] if option.startswith('-') else None
        if option == 'summary':
            options[option] = value
        else:
            options[option] = True

    site = pywikibot.Site()

    generator = gen_factory.getCombinedGenerator(preload=True)
    if generator:
        bot = IWBot(generator=generator, site=site, **options)

xmlfilename = None
    user = None
    skip = False
    timestamp = None

    # read command line parameters
    local_args = pywikibot.handle_args(args)

    # Avoid conflicts with pagegenerators.py parameters.
    if any(arg.startswith('-category:') for arg in local_args):
        warn('-category (to append a category to each edited page) has been'
             ' renamed to -addcat; make sure you are using the correct param.',
             ArgumentDeprecationWarning)

    site = pywikibot.Site()
    gen_factory = pagegenerators.GeneratorFactory()
    for arg in local_args:
        if arg == '-remove':
            options['remove'] = True
        elif arg == '-subst':
            options['subst'] = True
        elif arg == '-assubst':
            options['subst'] = options['remove'] = True
        elif arg == '-always':
            options['always'] = True
        elif arg.startswith('-xml'):
            if len(arg) == 4:
                xmlfilename = pywikibot.input(
                    "Please enter the XML dump's filename: ")
            else:
                xmlfilename = arg[5:]
        elif arg.startswith('-addcat:'):

def main(*args):
    """
    Process command line arguments and invoke bot.

    If args is an empty list, sys.argv is used.

    @param args: command line arguments
    @type args: unicode
    """
    generator = None
    onlyFilter = False
    onlyUncat = False

    # Process global args and prepare generator args parser
    local_args = pywikibot.handle_args(args)
    genFactory = pagegenerators.GeneratorFactory()

    global search_wikis
    global hint_wiki

    for arg in local_args:
        if arg == '-onlyfilter':
            onlyFilter = True
        elif arg == '-onlyuncat':
            onlyUncat = True
        elif arg.startswith('-hint:'):
            hint_wiki = arg[len('-hint:'):]
        elif arg.startswith('-onlyhint'):
            search_wikis = arg[len('-onlyhint:'):]
        else:
            genFactory.handleArg(arg)

# always, define a generator to understand if the user sets one,
    # defining what's genFactory
    always = False
    generator = False
    show = False
    moveBlockCheck = False
    protectedpages = False
    protectType = 'edit'
    namespace = 0

    # To prevent Infinite loops
    errorCount = 0

    # Process global args and prepare generator args parser
    local_args = pywikibot.handle_args(args)
    genFactory = pagegenerators.GeneratorFactory()

    # Process local args
    for arg in local_args:
        option, sep, value = arg.partition(':')
        if option == '-always':
            always = True
        elif option == '-move':
            moveBlockCheck = True
        elif option == '-show':
            show = True
        elif option in ('-protectedpages', '-moveprotected'):
            protectedpages = True
            if option == '-moveprotected':
                protectType = 'move'
            if value:
                namespace = int(value)

Process command line arguments and invoke bot.

    If args is an empty list, sys.argv is used.

    @param args: command line arguments
    @type args: unicode
    """
    options = {}
    gen = None

    local_args = pywikibot.handle_args(args)

    # This factory is responsible for processing command line arguments
    # that are also used by other scripts and that determine on which pages
    # to work on.
    gen_factory = pagegenerators.GeneratorFactory(positional_arg_name='page')

    for arg in local_args:
        option, sep, value = arg.partition(':')
        if option == '-xml':
            filename = value or pywikibot.input(
                "Please enter the XML dump's filename:")
            gen = TableXmlDumpPageGenerator(filename)
        elif option == '-auto':
            issue_deprecation_warning(
                'The usage of "-auto"', '-always',
                1, ArgumentDeprecationWarning, since='20170205')
            options['always'] = True
        elif option in ['-always', '-quiet', '-skipwarning']:
            options[option[1:]] = True
        else:
            if option in ('-sql', '-mysqlquery'):

def main(*args):
    """
    Process command line arguments and invoke bot.

    If args is an empty list, sys.argv is used.

    @param args: command line arguments
    @type args: unicode
    """
    # Process global args and prepare generator args parser
    local_args = pywikibot.handle_args(args)
    generator_factory = pagegenerators.GeneratorFactory()

    wdproperty = 'P18'

    for arg in local_args:
        if arg.startswith('-property'):
            if len(arg) == 9:
                wdproperty = pywikibot.input(
                    'Please enter the property you want to add:')
            else:
                wdproperty = arg[10:]
        else:
            generator_factory.handleArg(arg)

    generator = generator_factory.getCombinedGenerator(preload=True)
    if not generator:
        pywikibot.bot.suggest_help(missing_generator=True)