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Tidy the code

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Edward Betts 2021-04-16 16:21:38 +01:00
parent b8e217d9e4
commit 5c501b80f0
1 changed files with 123 additions and 148 deletions
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271
lookup.py
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@ -12,54 +12,53 @@ from geopy.distance import distance
# select gid, code, name from scotland where st_contains(geom, ST_Transform(ST_SetSRID(ST_MakePoint(-4.177, 55.7644), 4326), 27700));
commons_cat_start = 'https://commons.wikimedia.org/wiki/Category:'
commons_cat_start = "https://commons.wikimedia.org/wiki/Category:"
use_cache = False
headers = {
'User-Agent': 'UK gecode/0.1 (edward@4angle.com)',
"User-Agent": "UK gecode/0.1 (edward@4angle.com)",
}
OVERPASS_URL = 'https://lz4.overpass-api.de'
wikidata_query_api_url = 'https://query.wikidata.org/bigdata/namespace/wdq/sparql'
wikidata_url = 'https://www.wikidata.org/w/api.php'
wd_entity = 'http://www.wikidata.org/entity/Q'
city_of_london_qid = 'Q23311'
OVERPASS_URL = "https://lz4.overpass-api.de"
wikidata_query_api_url = "https://query.wikidata.org/bigdata/namespace/wdq/sparql"
wd_entity = "http://www.wikidata.org/entity/Q"
city_of_london_qid = "Q23311"
samples = [
(50.8326, -0.2689, 'Adur'),
(52.4914, -0.69645, 'Corby'),
(50.893, -4.265, 'Newton St Petrock'),
(51.779, 0.128, 'Harlow'),
(52.387, 0.294, 'Ely'),
(50.9, -1.6, 'Minstead'),
(52.43, -1.11, 'South Kilworth'),
(53.117, -0.202, 'Tattershall Thorpe'),
(53.351, -2.701, 'Halton'),
(52.421, -0.651, 'Warkton'),
(51.51, -1.547, 'Lambourn'),
(52.62, -1.884, 'Shenstone'),
(53.309, -1.539, 'Sheffield'),
(53.322, 0.032, 'Haugham'),
(51.05, -2.598, 'Babcary'),
(51.158, -1.906, 'Berwick St James'),
(51.867, -1.204, 'Weston-on-the-Green'),
(51.034, -2.005, 'Ebbesbourne Wake'),
(51.07, -0.718, 'Fernhurst'),
(53.059, -0.144, 'Wildmore'),
(51.473, 0.221, 'Dartford'),
(51.059, 0.05, 'Danehill'),
(52.253, -0.122, 'Papworth Everard'),
(53.498, -0.415, 'West Lindsey'),
(53.392, -0.022, 'Brackenborough with Little Grimsby'),
(53.463, -0.027, 'Fulstow'),
(52.766, 0.31, 'Terrington St Clement'),
(53.1540, -1.8034, 'Hartington Town Quarter'),
(51.8532, -0.8829, 'Fleet Marston'),
(51.4785, -0.354, 'London Borough of Hounslow'),
(51.9687, -0.0327, 'Buckland, Hertfordshire'),
(51.0804, -2.3263, 'Zeals'),
(55.7644, -4.1770, 'East Kilbride'),
(51.4520, -2.6210, 'Bristol'),
(50.8326, -0.2689, "Adur"),
(52.4914, -0.69645, "Corby"),
(50.893, -4.265, "Newton St Petrock"),
(51.779, 0.128, "Harlow"),
(52.387, 0.294, "Ely"),
(50.9, -1.6, "Minstead"),
(52.43, -1.11, "South Kilworth"),
(53.117, -0.202, "Tattershall Thorpe"),
(53.351, -2.701, "Halton"),
(52.421, -0.651, "Warkton"),
(51.51, -1.547, "Lambourn"),
(52.62, -1.884, "Shenstone"),
(53.309, -1.539, "Sheffield"),
(53.322, 0.032, "Haugham"),
(51.05, -2.598, "Babcary"),
(51.158, -1.906, "Berwick St James"),
(51.867, -1.204, "Weston-on-the-Green"),
(51.034, -2.005, "Ebbesbourne Wake"),
(51.07, -0.718, "Fernhurst"),
(53.059, -0.144, "Wildmore"),
(51.473, 0.221, "Dartford"),
(51.059, 0.05, "Danehill"),
(52.253, -0.122, "Papworth Everard"),
(53.498, -0.415, "West Lindsey"),
(53.392, -0.022, "Brackenborough with Little Grimsby"),
(53.463, -0.027, "Fulstow"),
(52.766, 0.31, "Terrington St Clement"),
(53.1540, -1.8034, "Hartington Town Quarter"),
(51.8532, -0.8829, "Fleet Marston"),
(51.4785, -0.354, "London Borough of Hounslow"),
(51.9687, -0.0327, "Buckland, Hertfordshire"),
(51.0804, -2.3263, "Zeals"),
(55.7644, -4.1770, "East Kilbride"),
(51.4520, -2.6210, "Bristol"),
]
class QueryError(Exception):
@ -91,13 +90,13 @@ def random_location():
elements = get_osm_elements(lat, lon)
result = do_lookup(elements, lat, lon)
return render_template('random.html', lat=lat, lon=lon, result=result, elements=elements)
return render_template("random.html", lat=lat, lon=lon, result=result, elements=elements)
@app.route("/wikidata_tag")
def wikidata_tag():
lat = float(request.args.get('lat'))
lon = float(request.args.get('lon'))
lat = float(request.args.get("lat"))
lon = float(request.args.get("lon"))
scotland_code = get_scotland_code(lat, lon)
@ -110,32 +109,32 @@ def wikidata_tag():
elements = get_osm_elements(lat, lon)
result = do_lookup(elements, lat, lon)
return render_template('wikidata_tag.html', lat=lat, lon=lon, result=result, elements=elements)
return render_template("wikidata_tag.html", lat=lat, lon=lon, result=result, elements=elements)
@app.route("/detail")
def detail_page():
try:
lat, lon = [float(request.args.get(param)) for param in ('lat', 'lon')]
lat, lon = [float(request.args.get(param)) for param in ("lat", "lon")]
except TypeError:
return redirect(url_for('index'))
return redirect(url_for("index"))
reply = lat_lon_to_wikidata(lat, lon)
return render_template('random.html', lat=lat, lon=lon, **reply)
return render_template("random.html", lat=lat, lon=lon, **reply)
def bounding_box_area(element):
bbox = element['bounds']
bbox = element["bounds"]
x = distance((bbox['maxlat'], bbox['minlon']), (bbox['maxlat'], bbox['maxlon']))
y = distance((bbox['minlat'], bbox['maxlon']), (bbox['maxlat'], bbox['minlon']))
x = distance((bbox["maxlat"], bbox["minlon"]), (bbox["maxlat"], bbox["maxlon"]))
y = distance((bbox["minlat"], bbox["maxlon"]), (bbox["maxlat"], bbox["minlon"]))
return x.km * y.km
def wd_to_qid(wd):
# expecting {'type': 'url', 'value': 'https://www.wikidata.org/wiki/Q30'}
if wd['type'] == 'uri':
return wd_uri_to_qid(wd['value'])
# expecting {"type": "url", "value": "https://www.wikidata.org/wiki/Q30"}
if wd["type"] == "uri":
return wd_uri_to_qid(wd["value"])
def wd_uri_to_qid(value):
@ -144,15 +143,15 @@ def wd_uri_to_qid(value):
def build_dict(hit, lat, lon):
coords = {'lat': lat, 'lon': lon}
coords = {"lat": lat, "lon": lon}
if hit is None:
return dict(commons_cat=None, missing=True, coords=coords)
commons_cat = hit['commons_cat']
url = commons_cat_start + urllib.parse.quote(commons_cat.replace(' ', '_'))
return dict(commons_cat={'title': commons_cat, 'url': url},
commons_cat = hit["commons_cat"]
url = commons_cat_start + urllib.parse.quote(commons_cat.replace(" ", "_"))
return dict(commons_cat={"title": commons_cat, "url": url},
coords=coords,
admin_level=hit.get('admin_level'),
wikidata=hit['wikidata'])
admin_level=hit.get("admin_level"),
wikidata=hit["wikidata"])
def do_lookup(elements, lat, lon):
@ -160,25 +159,25 @@ def do_lookup(elements, lat, lon):
hit = osm_lookup(elements, lat, lon)
except QueryError as e:
return {
'query': e.query,
'error': e.r.text,
'query_url': 'https://query.wikidata.org/#' + e.query,
"query": e.query,
"error": e.r.text,
"query_url": "https://query.wikidata.org/#" + e.query,
}
return build_dict(hit, lat, lon)
def get_scotland_code(lat, lon):
conn = psycopg2.connect(dbname='geocode', user='geocode', password='ooK3ohgh', host='localhost')
conn = psycopg2.connect(dbname="geocode", user="geocode", password="ooK3ohgh", host="localhost")
cur = conn.cursor()
point = f'ST_Transform(ST_SetSRID(ST_MakePoint({lon}, {lat}), 4326), 27700)'
cur.execute(f'select code, name from scotland where st_contains(geom, {point});')
point = f"ST_Transform(ST_SetSRID(ST_MakePoint({lon}, {lat}), 4326), 27700)"
cur.execute(f"select code, name from scotland where st_contains(geom, {point});")
row = cur.fetchone()
# expand search, disabled for now 2020-04-20
if not row:
cur.execute(f'select code, name from scotland where ST_DWithin(geom, {point}, 100);')
cur.execute(f"select code, name from scotland where ST_DWithin(geom, {point}, 100);")
row = cur.fetchone()
conn.close()
@ -280,45 +279,43 @@ def lat_lon_to_wikidata(lat, lon):
@app.route("/")
def index():
q = request.args.get('q')
q = request.args.get("q")
if q and q.strip():
lat, lon = [v.strip() for v in q.split(',', 1)]
return redirect(url_for('detail_page', lat=lat, lon=lon))
lat, lon = [v.strip() for v in q.split(",", 1)]
return redirect(url_for("detail_page", lat=lat, lon=lon))
lat = request.args.get('lat')
lon = request.args.get('lon')
lat = request.args.get("lat")
lon = request.args.get("lon")
if lat is None or lon is None:
samples.sort(key=lambda row: row[2])
return render_template('index.html', samples=samples)
return render_template("index.html", samples=samples)
return jsonify(lat_lon_to_wikidata(lat, lon)['result'])
return jsonify(lat_lon_to_wikidata(lat, lon)["result"])
def wikidata_api_call(params):
call_params = {
'format': 'json',
'formatversion': 2,
**params,
}
return requests.get(
"https://www.wikidata.org/w/api.php",
params={"format": "json", "formatversion": 2, **params},
headers=headers
).json()
r = requests.get(wikidata_url, params=call_params, headers=headers)
return r
def get_entity(qid):
json_data = wikidata_api_call({'action': 'wbgetentities', 'ids': qid}).json()
json_data = wikidata_api_call({"action": "wbgetentities", "ids": qid})
try:
entity = list(json_data['entities'].values())[0]
entity = list(json_data["entities"].values())[0]
except KeyError:
return
if 'missing' not in entity:
if "missing" not in entity:
return entity
def qid_to_commons_category(qid):
entity = get_entity(qid)
try:
commons_cat = entity['claims']['P373'][0]['mainsnak']['datavalue']['value']
commons_cat = entity["claims"]["P373"][0]["mainsnak"]["datavalue"]["value"]
except Exception:
commons_cat = None
@ -326,9 +323,11 @@ def qid_to_commons_category(qid):
def wdqs(query):
r = requests.post(wikidata_query_api_url,
data={'query': query, 'format': 'json'},
headers=headers)
r = requests.post(
wikidata_query_api_url,
data={"query": query, "format": "json"},
headers=headers
)
try:
return r.json()
@ -336,12 +335,8 @@ def wdqs(query):
raise QueryError(query, r)
def endpoint():
return OVERPASS_URL + '/api/interpreter'
def run_query(oql, error_on_rate_limit=True):
return requests.post(endpoint(),
return requests.post(OVERPASS_URL + '/api/interpreter',
data=oql.encode('utf-8'),
headers=headers)
@ -411,111 +406,91 @@ SELECT DISTINCT ?item ?itemLabel ?commonsSiteLink ?commonsCat WHERE {
def unescape_title(t):
return urllib.parse.unquote(t.replace('_', ' '))
return urllib.parse.unquote(t.replace("_", " "))
def commons_from_rows(rows):
for row in rows:
if 'commonsCat' in row:
qid = wd_to_qid(row['item'])
return {'wikidata': qid,
'commons_cat': row['commonsCat']['value']}
if 'commonsSiteLink' in row:
site_link = row['commonsSiteLink']['value']
qid = wd_to_qid(row['item'])
if "commonsCat" in row:
qid = wd_to_qid(row["item"])
return {"wikidata": qid,
"commons_cat": row["commonsCat"]["value"]}
if "commonsSiteLink" in row:
site_link = row["commonsSiteLink"]["value"]
qid = wd_to_qid(row["item"])
cat = unescape_title(site_link[len(commons_cat_start):])
return {'wikidata': qid, 'commons_cat': cat}
return {"wikidata": qid, "commons_cat": cat}
def get_commons_cat_from_gss(gss):
print('GSS:', gss)
rows = lookup_gss_in_wikidata(gss)
return commons_from_rows(rows)
return commons_from_rows(lookup_gss_in_wikidata(gss))
def get_osm_elements(lat, lon):
filename = f'cache/{lat}_{lon}.json'
filename = f"cache/{lat}_{lon}.json"
if use_cache and os.path.exists(filename):
elements = json.load(open(filename))['elements']
elements = json.load(open(filename))["elements"]
else:
r = is_in_lat_lon(lat, lon)
if use_cache:
open(filename, 'wb').write(r.content)
elements = r.json()['elements']
open(filename, "wb").write(r.content)
elements = r.json()["elements"]
return elements
def osm_lookup(elements, lat, lon):
is_in = []
elements.sort(key=lambda e: bounding_box_area(e))
if False:
for e in sorted(elements, key=lambda e: e['area']):
try:
admin_level = int(e['tags']['admin_level'])
except (ValueError, KeyError):
admin_level = None
if admin_level is None:
if e['id'] == 6038068: # Great Britain
continue
if 'place' in e['tags'] or e['tags'].get('type') == 'boundary':
is_in.append((99, e['tags']))
continue
is_in.append((admin_level, e['tags']))
# for _, tags in sorted(is_in, key=lambda i: i[0], reverse=True):
for e in elements:
if 'tags' not in e:
if "tags" not in e:
continue
tags = e['tags']
admin_level_tag = tags.get('admin_level')
tags = e["tags"]
admin_level_tag = tags.get("admin_level")
admin_level = int(admin_level_tag) if admin_level_tag and admin_level_tag.isdigit() else None
if not admin_level and tags.get('boundary') != 'political':
if not admin_level and tags.get("boundary") != "political":
continue
if 'wikidata' in tags:
qid = tags['wikidata']
if "wikidata" in tags:
qid = tags["wikidata"]
commons = qid_to_commons_category(qid)
if commons:
return {
'wikidata': qid,
'commons_cat': commons,
'admin_level': admin_level,
"wikidata": qid,
"commons_cat": commons,
"admin_level": admin_level,
}
gss = tags.get('ref:gss')
gss = tags.get("ref:gss")
if gss:
ret = get_commons_cat_from_gss(gss)
if ret:
ret['admin_level'] = admin_level
ret["admin_level"] = admin_level
return ret
name = tags.get('name')
name = tags.get("name")
if not name:
continue
if name.endswith(' CP'):
if name.endswith(" CP"):
name = name[:-3]
rows = lookup_wikidata_by_name(name, lat, lon)
if len(rows) == 1:
ret = commons_from_rows(rows)
if ret:
ret['admin_level'] = admin_level
ret["admin_level"] = admin_level
return ret
has_wikidata_tag = [e['tags'] for e in elements if 'wikidata' in e['tags']]
has_wikidata_tag = [e["tags"] for e in elements if "wikidata" in e["tags"]]
if len(has_wikidata_tag) != 1:
return
qid = has_wikidata_tag[0]['wikidata']
qid = has_wikidata_tag[0]["wikidata"]
return {
'wikidata': qid,
'commons_cat': qid_to_commons_category(qid),
'admin_level': admin_level,
"wikidata": qid,
"commons_cat": qid_to_commons_category(qid),
"admin_level": admin_level,
}
if __name__ == '__main__':
app.run(host='0.0.0.0')
if __name__ == "__main__":
app.run(host="0.0.0.0")