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awena.py
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# -*- coding: UTF-8 -*-
# Awena - Alternative Wikidata Enquiry Application
import requests
from functools import lru_cache
@lru_cache(maxsize=1000)
def _external_request(query, lang):
headers = {
"User-Agent": Crawler.USER_AGENT
}
params = {
"action" : "wbsearchentities",
"search" : query,
"language" : lang,
"format" : "json",
"limit" : 5
}
return requests.get("https://www.wikidata.org/w/api.php", headers=headers, params=params, timeout=5)
class Crawler:
VERSION = "0.1"
USER_AGENT = "Mozilla/5.0 (compatible; Awena/"+VERSION+"; +https://github.com/sedthh/awena-wikidata-crawler/)"
##### CONSTRUCTOR #####
def __init__(self, lang='en', connector=None):
self.lang = lang.lower()
self.cache = {}
self.n = 0
self.connector = connector
##### DATA MODEL #####
def __repr__(self):
return "<Awena Search instance at {0}>".format(hex(id(self)))
def __str__(self):
return self.query
def __len__(self):
return len(self.cache)
def __eq__(self, other):
if isinstance(other, bool):
return bool(self.cache)==other
return False
def __ne__(self, other):
return not self.__eq__(other)
##### CLASS FUNCTIONS #####
def get_subclass(self, id, rel):
if rel is None:
return []
query = """
select ?p ?o where {
<"""+"http://www.wikidata.org/entity/"+str(id)+"""> <"""+rel+"""> ?o .
}
"""
return self.connector.query(query)
def inverse_subclass(self, id, rel):
if rel is None:
return []
query = """
select ?s where {
?s <"""+rel+"""> <"""+"http://www.wikidata.org/entity/"+str(id)+""">.
}
"""
return self.connector.query(query)
def number_of_requests(self):
return self.n
def search(self, query, subclass=None, obj=None, find_object=True):
return self._request(query,False, subclass, obj, find_object)
def load(self,id=None):
if not id:
return {}
if id not in self.cache:
data = self._request(False,id)
self.cache[id]= self._parse(data,id)
return self.cache[id]
def _request(self,query=False,id=False,subclass=None, obj=None, find_object=True):
headers = {
"User-Agent" : Crawler.USER_AGENT
}
if id:
params = {
"action" : "wbgetentities",
"ids" : id,
"language" : self.lang,
"format" : "json",
}
else:
if not query:
return None
query = query.strip()
params = {
"action" : "wbsearchentities",
"search" : query,
"language" : self.lang,
"format" : "json",
}
data = _external_request(query,self.lang)
result= data.json()
self.n+= 1
if 'error' in result:
raise Exception(result['error']['code'],result['error']['info'])
elif query and "search" in result and result["search"]:
guess = None
pos_entities = []
for item in result["search"]:
if "id" in item and "match" in item and "text" in item["match"] and "language" in item["match"]:
if item["match"]["language"]==self.lang:
if subclass is None:
pos_entities.append(item["id"])
return pos_entities
elif id and "entities" in result and result["entities"]:
if id in result["entities"] and result["entities"][id]:
return result["entities"][id]
if query:
return {}
return None
def _parse(self,data,id):
result = {"id":id}
if id and data:
if "labels" in data:
if self.lang in data["labels"]:
result["label"] = data["labels"][self.lang]["value"]
if "descriptions" in data:
if self.lang in data["descriptions"]:
result["description"] = data["descriptions"][self.lang]["value"]
if "claims" in data:
# results to human readable format
for key in data["claims"]:
try:
if key=="P31": # instance of
result["instance"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
# humans
elif key=="P21": # sex
if data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"] in ("Q6581097","Q44148"):
result["sex"] = "male"
elif data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"] in ("Q6581072","Q43445"):
result["sex"] = "female"
else:
result["sex"] = "other"
elif key=="P27": # country of citizenship
result["country"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P106": # occupation
result["occupation"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P22": # father
result["father"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P25": # mother
result["mother"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P40": #children
result["number_of_children"]= len(data["claims"][key])
elif key=="P3373": # siblings
result["number_of_siblings"]= len(data["claims"][key])
elif key=="P569": # date of birth
result["date_of_birth"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["time"]
elif key=="P19": # place of birth
result["place_of_birth"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P570": # date of death
result["date_of_death"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["time"]
elif key=="P20": # place of death
result["place_of_death"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P509": # cause of death
result["cause_of_death"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
# locations
elif key=="P30": # continent
result["continent"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P17": # country
result["country"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P36": # capital
result["capital"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=='P625': # coordinate location
result['coordinates'] = str(data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["latitude"])+" "+str(data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["longitude"])
elif key=='P1082': # population
result["population"] = float(data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["amount"][1:])
elif key=='P2046': # area
if "Q712226" in data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["unit"]: #km2
result["area"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["amount"][1:]+" km2"
elif key=="P2049": # width
result["width"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["amount"][1:]
if "Q828224" in data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["unit"]:
result["width"] += " km"
elif "Q11573"in data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["unit"]:
result["width"] += " m"
elif key=="P2043": # length
result["length"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["amount"][1:]
if "Q828224" in data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["unit"]:
result["length"] += " km"
elif "Q11573"in data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["unit"]:
result["length"] += " m"
elif key=="P2044": # elevation above sea level
result["height"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["amount"][1:]
if "Q828224" in data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["unit"]:
result["height"] += " km"
elif "Q11573"in data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["unit"]:
result["height"] += " m"
elif key=="P4511": # vertical depth
result["height"] = "-"+data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["amount"][1:]
if "Q828224" in data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["unit"]:
result["height"] += " km"
elif "Q11573"in data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["unit"]:
result["height"] += " m"
# animals
elif key=="P4733": # produced sound
result["sound"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P225": # taxon name
result["latin"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]
# other
elif key=="P487": # unicode character
result["emoji"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]
elif key=="P837": # day in year for periodic occurance
result["date"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P571": # inception
result["start_date"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["time"]
result["discovery_date"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["time"]
elif key=="P580": # start time
result["start_date"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["time"]
elif key=="P582": # end time
result["end_date"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["time"]
elif key=="P576": # dissolved, abolished or demolished
result["end_date"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["time"]
elif key=="P169": # chef executive officer
result["leader"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P6": # head of government
result["leader"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P1120": # number of deaths
result["deaths"] = float(data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["amount"][1:])
elif key=="P57": # director
result["director"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P50": #author
result["author"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P61": # discoverer or inventor
result["discoverer"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P170": # creator
result["discoverer"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P138": # named after
result["discoverer"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P575": # time of discovery or invention
result["discovery_date"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["time"]
elif key=="P37": # offical language
result["language"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P38": # currency
result["currency"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]["id"]
elif key=="P246": # element symbol
result["formula"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]
elif key=="P274": # chemical formula
result["formula"] = data["claims"][key][0]["mainsnak"]["datavalue"]["value"]
except KeyError:
pass
return result