import pywikibot
site = pywikibot.Site('test','wikipedia')
site
APISite("test", "wikipedia")
page = pywikibot.Page(site, 'test')
WARNING: API error mwoauth-invalid-authorization-invalid-user: The authorization headers in your request are for a user that does not exist here
---------------------------------------------------------------------------
NoUsername                                Traceback (most recent call last)
<ipython-input-4-048f4ae2d5cf> in <module>()
----> 1 page = pywikibot.Page(site, 'test')

/srv/paws/pwb/pywikibot/tools/__init__.py in wrapper(*__args, **__kw)
   1445                              cls, depth)
   1446                     del __kw[old_arg]
-> 1447             return obj(*__args, **__kw)
   1448 
   1449         if not __debug__:

/srv/paws/pwb/pywikibot/page.py in __init__(self, source, title, ns)
   2175                 raise ValueError(u'Title must be specified and not empty '
   2176                                  'if source is a Site.')
-> 2177         super(Page, self).__init__(source, title, ns)
   2178 
   2179     @deprecate_arg("get_redirect", None)

/srv/paws/pwb/pywikibot/page.py in __init__(self, source, title, ns)
    159 
    160         if isinstance(source, pywikibot.site.BaseSite):
--> 161             self._link = Link(title, source=source, defaultNamespace=ns)
    162             self._revisions = {}
    163         elif isinstance(source, Page):

/srv/paws/pwb/pywikibot/page.py in __init__(self, text, source, defaultNamespace)
   5022         # See bug T104864, defaultNamespace might have been deleted.
   5023         try:
-> 5024             self._defaultns = self._source.namespaces[defaultNamespace]
   5025         except KeyError:
   5026             self._defaultns = defaultNamespace

/srv/paws/pwb/pywikibot/site.py in namespaces(self)
   1012         """Return dict of valid namespaces on this wiki."""
   1013         if not hasattr(self, '_namespaces'):
-> 1014             self._namespaces = NamespacesDict(self._build_namespaces())
   1015         return self._namespaces
   1016 

/srv/paws/pwb/pywikibot/site.py in _build_namespaces(self)
   2608         # For versions lower than 1.14, APISite needs to override
   2609         # the defaults defined in Namespace.
-> 2610         is_mw114 = MediaWikiVersion(self.version()) >= MediaWikiVersion('1.14')
   2611 
   2612         for nsdata in self.siteinfo.get('namespaces', cache=False).values():

/srv/paws/pwb/pywikibot/site.py in version(self)
   2721         if not version:
   2722             try:
-> 2723                 version = self.siteinfo.get('generator', expiry=1).split(' ')[1]
   2724             except pywikibot.data.api.APIError:
   2725                 # May occur if you are not logged in (no API read permissions).

/srv/paws/pwb/pywikibot/site.py in get(self, key, get_default, cache, expiry)
   1674                 elif not Siteinfo._is_expired(cached[1], expiry):
   1675                     return copy.deepcopy(cached[0])
-> 1676         preloaded = self._get_general(key, expiry)
   1677         if not preloaded:
   1678             preloaded = self._get_siteinfo(key, expiry)[key]

/srv/paws/pwb/pywikibot/site.py in _get_general(self, key, expiry)
   1620                         u"', '".join(props)), _logger)
   1621             props += ['general']
-> 1622             default_info = self._get_siteinfo(props, expiry)
   1623             for prop in props:
   1624                 self._cache[prop] = default_info[prop]

/srv/paws/pwb/pywikibot/site.py in _get_siteinfo(self, prop, expiry)
   1546             # warnings are handled later
   1547             request._warning_handler = warn_handler
-> 1548             data = request.submit()
   1549         except api.APIError as e:
   1550             if e.code == 'siunknown_siprop':

/srv/paws/pwb/pywikibot/data/api.py in submit(self)
   2340         cached_available = self._load_cache()
   2341         if not cached_available:
-> 2342             self._data = super(CachedRequest, self).submit()
   2343             self._write_cache(self._data)
   2344         else:

/srv/paws/pwb/pywikibot/data/api.py in submit(self)
   2173                     continue
   2174                 raise NoUsername('Failed OAuth authentication for %s: %s'
-> 2175                                  % (self.site, info))
   2176             # raise error
   2177             try:

NoUsername: Failed OAuth authentication for wikipedia:test: The authorization headers in your request are for a user that does not exist here