def _fix_hotels(self):
if self.country_code == "cn":
# Fix chinese coordinates.
# https://en.wikipedia.org/wiki/Restrictions_on_geographic_data_in_China
for hotel in self.hotels:
hotel_data = hotel["hotel_data"]
location = hotel_data["location"]
try:
location["latitude"], location["longitude"] = gcj2wgs_exact(
float(location["latitude"]), float(location["longitude"])
)
except ValueError:
logging.exception(f"Converting error {location}")
def _fix_hotels(self):
if self.country_code == "cn":
# Fix chinese coordinates.
# https://en.wikipedia.org/wiki/Restrictions_on_geographic_data_in_China
for hotel in self.hotels:
hotel_data = hotel["hotel_data"]
location = hotel_data["location"]
try:
location["latitude"], location[
"longitude"] = gcj2wgs_exact(
float(location["latitude"]),
float(location["longitude"]))
except ValueError:
logging.exception(f"Converting error {location}")
def test_z_speed(self):
n = 100000
tests = (
('wgs2gcj',
lambda: eviltransform.wgs2gcj(TESTS[0][0], TESTS[0][1])),
('gcj2wgs',
lambda: eviltransform.gcj2wgs(TESTS[0][0], TESTS[0][1])),
('gcj2wgs_exact',
lambda: eviltransform.gcj2wgs_exact(TESTS[0][0], TESTS[0][1])),
('distance', lambda: eviltransform.distance(*TESTS[0]))
)
print('\n' + '='*30)
for name, func in tests:
sec = timeit.timeit(func, number=n)
print('%s\t%.2f ns/op' % (name, sec * 1e9 / n))
def transform(src, dst):
latlon = re.compile('lat="(\d+\.\d+)" lon="(\d+\.\d+)"')
try:
rfile = open(src, 'r')
wfile = open(dst, 'w', newline='')
for line in rfile:
m = latlon.search(line)
if m is not None:
gcjlat, gcjlon = m.group(1, 2)
wgslat, wgslon = gcj2wgs_exact(float(gcjlat), float(gcjlon))
line = line.replace(gcjlat, str(round(wgslat, 6)))
line = line.replace(gcjlon, str(round(wgslon, 6)))
wfile.write(line)
except Exception as err:
raise err
finally:
rfile.close()
wfile.close()
def translate(source, output):
'''
Reads *.pkl files and produces a single list of hotels as tab separated values.
'''
files = [os.path.join(source, filename)
for filename in os.listdir(source) if filename.endswith('.pkl')]
data = []
for filename in sorted(files):
logging.info('Processing {0}'.format(filename))
with open(filename, 'rb') as fd:
data += pickle.load(fd)
# Fix chinese coordinates
for hotel in data:
if hotel['countrycode'] == 'cn' and 'location' in hotel:
try:
hotel['location']['latitude'], hotel['location']['longitude'] = eviltransform.gcj2wgs_exact(
float(hotel['location']['latitude']), float(hotel['location']['longitude']))
except ValueError:
# We don't care if there were errors converting coordinates to float
pass
# Dict of dicts city_id -> { currency -> [prices] }
cities = defaultdict(lambda: defaultdict(list))
def valid(hotel):
return 'city_id' in hotel and 'currencycode' in hotel and 'minrate' in hotel and hotel['minrate'] is not None
# Collect prices
for hotel in data:
if valid(hotel):
cities[hotel['city_id']][hotel['currencycode']].append(float(hotel['minrate']))
# Replaces list of prices by a median price.
for city in cities:
for cur in cities[city]:
cities[city][cur] = sorted(cities[city][cur])[len(cities[city][cur]) / 2]
# Price rate ranges, relative to the median price for a city
rates = (0.7, 1.3)
def get_hotel_field(hotel, field, rate):
if field == '.lat':
return hotel['location']['latitude']
elif field == '.lon':
return hotel['location']['longitude']
elif field == '.rate':
return rate
elif field == '.trans':
# Translations are packed into a single column: lang1|name1|address1|lang2|name2|address2|...
if 'translations' in hotel:
tr_list = []
for tr_lang, tr_values in hotel['translations'].items():
tr_list.append(tr_lang)
tr_list.extend([tr_values[e] for e in ('name', 'address')])
return '|'.join([s.replace('|', ';') for s in tr_list])
else:
return ''
elif field in hotel:
return hotel[field]
elif field == 'ranking':
# This field is not used yet, and booking.com sometimes blocks it.
return ''
logging.error('Unknown hotel field: {0}, URL: {1}'.format(field, hotel['url']))
return ''
with open(output, 'w') as fd:
for hotel in data:
rate = 0
if valid(hotel):
avg = cities[hotel['city_id']][hotel['currencycode']]
price = float(hotel['minrate'])
rate = 1
# Find a range that contains the price
while rate <= len(rates) and price > avg * rates[rate - 1]:
rate += 1
l = [get_hotel_field(hotel, e, rate) for e in HOTEL_FIELDS]
print('\t'.join([unicode(f).encode('utf8').replace('\t', ' ').replace('\n', ' ').replace('\r', '') for f in l]), file=fd)
def test_gcj2wgs_exact(self):
for wgsLat, wgsLng, gcjLat, gcjLng in TESTS:
ret = eviltransform.gcj2wgs_exact(gcjLat, gcjLng)
self.assertLess(
eviltransform.distance(ret[0], ret[1], wgsLat, wgsLng), .5)
def test_gcj2wgs_exact(self):
for wgsLat, wgsLng, gcjLat, gcjLng in TESTS:
ret = eviltransform.gcj2wgs_exact(gcjLat, gcjLng)
self.assertLess(eviltransform.distance(
ret[0], ret[1], wgsLat, wgsLng), .5)
