#!/usr/bin/python3
#-*- encoding: Utf-8 -*-
from requests import get

def get_qnumber(wikiarticle, wikisite):
    resp = get('https://www.wikidata.org/w/api.php', {
        'action': 'wbgetentities',
        'titles': wikiarticle,
        'sites': wikisite,
        'props': '',
        'format': 'json'
    }).json()
    return list(resp['entities'])[0]

print(get_qnumber(wikiarticle="Andromeda Galaxy", wikisite="enwiki"))
Q2469
#!/usr/bin/python3
import pywikibot

site = pywikibot.Site("en", "wikipedia")
page = pywikibot.Page(site, "Douglas Adams")
item = pywikibot.ItemPage.fromPage(page)

print(item)
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-2-014a8c73592d> in <module>()
      3 
      4 site = pywikibot.Site("en", "wikipedia")
----> 5 page = pywikibot.Page(site, "Douglas Adams")
      6 item = pywikibot.ItemPage.fromPage(page)
      7 

/srv/paws/pwb/pywikibot/tools/__init__.py in wrapper(*__args, **__kw)
   1446                              cls, depth)
   1447                     del __kw[old_arg]
-> 1448             return obj(*__args, **__kw)
   1449 
   1450         if not __debug__:

/srv/paws/pwb/pywikibot/page.py in __init__(self, source, title, ns)
   2177                 raise ValueError(u'Title must be specified and not empty '
   2178                                  'if source is a Site.')
-> 2179         super(Page, self).__init__(source, title, ns)
   2180 
   2181     @deprecate_arg("get_redirect", None)

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

/srv/paws/pwb/pywikibot/page.py in __init__(self, text, source, defaultNamespace)
   5084         # See bug T104864, defaultNamespace might have been deleted.
   5085         try:
-> 5086             self._defaultns = self._source.namespaces[defaultNamespace]
   5087         except KeyError:
   5088             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)
   2610         # For versions lower than 1.14, APISite needs to override
   2611         # the defaults defined in Namespace.
-> 2612         is_mw114 = MediaWikiVersion(self.version()) >= MediaWikiVersion('1.14')
   2613 
   2614         for nsdata in self.siteinfo.get('namespaces', cache=False).values():

/srv/paws/pwb/pywikibot/site.py in version(self)
   2723         if not version:
   2724             try:
-> 2725                 version = self.siteinfo.get('generator', expiry=1).split(' ')[1]
   2726             except pywikibot.data.api.APIError:
   2727                 # 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:en: The authorization headers in your request are for a user that does not exist here