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# -*- coding: utf-8 -*-
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import json
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import re
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import unicodedata
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import string
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from urllib import urlencode
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from requests import get
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languages = {'de', 'en', 'es', 'fr', 'hu', 'it', 'nl', 'jp'}
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url_template = 'https://www.wikidata.org/w/api.php?action=wbgetentities&format=json&{query}&props=labels%7Cdatatype%7Cclaims%7Caliases&languages=' + '|'.join(languages)
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url_wmflabs_template = 'http://wdq.wmflabs.org/api?q='
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url_wikidata_search_template = 'http://www.wikidata.org/w/api.php?action=query&list=search&format=json&srnamespace=0&srprop=sectiontitle&{query}'
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wmflabs_queries = [
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'CLAIM[31:8142]', # all devise
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]
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db = {
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'iso4217': {
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},
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'names': {
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}
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}
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def remove_accents(data):
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return unicodedata.normalize('NFKD', data).lower()
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def normalize_name(name):
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return re.sub(' +', ' ', remove_accents(name.lower()).replace('-', ' '))
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def add_currency_name(name, iso4217):
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global db
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db_names = db['names']
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if not isinstance(iso4217, basestring):
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print "problem", name, iso4217
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return
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name = normalize_name(name)
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if name == '':
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print "name empty", iso4217
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return
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iso4217_set = db_names.get(name, None)
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if iso4217_set is not None and iso4217 not in iso4217_set:
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db_names[name].append(iso4217)
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else:
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db_names[name] = [iso4217]
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def add_currency_label(label, iso4217, language):
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global db
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db['iso4217'][iso4217] = db['iso4217'].get(iso4217, {})
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db['iso4217'][iso4217][language] = label
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def get_property_value(data, name):
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prop = data.get('claims', {}).get(name, {})
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if len(prop) == 0:
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return None
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value = prop[0].get('mainsnak', {}).get('datavalue', {}).get('value', '')
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if value == '':
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return None
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return value
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def parse_currency(data):
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iso4217 = get_property_value(data, 'P498')
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if iso4217 is not None:
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unit = get_property_value(data, 'P558')
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if unit is not None:
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add_currency_name(unit, iso4217)
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labels = data.get('labels', {})
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for language in languages:
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name = labels.get(language, {}).get('value', None)
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if name is not None:
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add_currency_name(name, iso4217)
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add_currency_label(name, iso4217, language)
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aliases = data.get('aliases', {})
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for language in aliases:
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for i in range(0, len(aliases[language])):
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alias = aliases[language][i].get('value', None)
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add_currency_name(alias, iso4217)
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def fetch_data(wikidata_ids):
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url = url_template.format(query=urlencode({'ids': '|'.join(wikidata_ids)}))
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htmlresponse = get(url)
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jsonresponse = json.loads(htmlresponse.content)
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entities = jsonresponse.get('entities', {})
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for pname in entities:
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pvalue = entities.get(pname)
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parse_currency(pvalue)
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def add_q(i):
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return "Q" + str(i)
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def fetch_data_batch(wikidata_ids):
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while len(wikidata_ids) > 0:
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if len(wikidata_ids) > 50:
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fetch_data(wikidata_ids[0:49])
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wikidata_ids = wikidata_ids[50:]
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else:
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fetch_data(wikidata_ids)
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wikidata_ids = []
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def wdq_query(query):
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url = url_wmflabs_template + query
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htmlresponse = get(url)
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jsonresponse = json.loads(htmlresponse.content)
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qlist = map(add_q, jsonresponse.get('items', {}))
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error = jsonresponse.get('status', {}).get('error', None)
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if error is not None and error != 'OK':
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print "error for query '" + query + "' :" + error
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fetch_data_batch(qlist)
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def wd_query(query, offset=0):
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qlist = []
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url = url_wikidata_search_template.format(query=urlencode({'srsearch': query, 'srlimit': 50, 'sroffset': offset}))
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htmlresponse = get(url)
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jsonresponse = json.loads(htmlresponse.content)
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for r in jsonresponse.get('query', {}).get('search', {}):
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qlist.append(r.get('title', ''))
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fetch_data_batch(qlist)
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# fetch #
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for q in wmflabs_queries:
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wdq_query(q)
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# static
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add_currency_name(u"euro", 'EUR')
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add_currency_name(u"euros", 'EUR')
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add_currency_name(u"dollar", 'USD')
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add_currency_name(u"dollars", 'USD')
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add_currency_name(u"peso", 'MXN')
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add_currency_name(u"pesos", 'MXN')
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# write
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f = open("currencies.json", "wb")
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json.dump(db, f, indent=4, encoding="utf-8")
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f.close()
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