215 lines
7.1 KiB
Python
215 lines
7.1 KiB
Python
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from functools import partial
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from urllib.parse import urlencode
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from geopy.exc import GeocoderParseError, GeocoderServiceError
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from geopy.geocoders.base import DEFAULT_SENTINEL, Geocoder
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from geopy.location import Location
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from geopy.util import logger
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__all__ = ("Yandex", )
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class Yandex(Geocoder):
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"""Yandex geocoder.
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Documentation at:
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https://tech.yandex.com/maps/doc/geocoder/desc/concepts/input_params-docpage/
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"""
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api_path = '/1.x/'
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def __init__(
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self,
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api_key,
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*,
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timeout=DEFAULT_SENTINEL,
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proxies=DEFAULT_SENTINEL,
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user_agent=None,
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scheme=None,
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ssl_context=DEFAULT_SENTINEL,
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adapter_factory=None
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):
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"""
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:param str api_key: Yandex API key, mandatory.
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The key can be created at https://developer.tech.yandex.ru/
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:param int timeout:
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See :attr:`geopy.geocoders.options.default_timeout`.
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:param dict proxies:
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See :attr:`geopy.geocoders.options.default_proxies`.
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:param str user_agent:
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See :attr:`geopy.geocoders.options.default_user_agent`.
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:param str scheme:
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See :attr:`geopy.geocoders.options.default_scheme`.
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:type ssl_context: :class:`ssl.SSLContext`
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:param ssl_context:
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See :attr:`geopy.geocoders.options.default_ssl_context`.
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:param callable adapter_factory:
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See :attr:`geopy.geocoders.options.default_adapter_factory`.
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.. versionadded:: 2.0
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"""
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super().__init__(
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scheme=scheme,
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timeout=timeout,
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proxies=proxies,
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user_agent=user_agent,
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ssl_context=ssl_context,
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adapter_factory=adapter_factory,
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)
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self.api_key = api_key
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domain = 'geocode-maps.yandex.ru'
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self.api = '%s://%s%s' % (self.scheme, domain, self.api_path)
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def geocode(
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self,
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query,
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*,
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exactly_one=True,
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timeout=DEFAULT_SENTINEL,
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lang=None
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):
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"""
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Return a location point by address.
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:param str query: The address or query you wish to geocode.
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:param bool exactly_one: Return one result or a list of results, if
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available.
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:param int timeout: Time, in seconds, to wait for the geocoding service
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to respond before raising a :class:`geopy.exc.GeocoderTimedOut`
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exception. Set this only if you wish to override, on this call
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only, the value set during the geocoder's initialization.
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:param str lang: Language of the response and regional settings
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of the map. List of supported values:
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- ``tr_TR`` -- Turkish (only for maps of Turkey);
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- ``en_RU`` -- response in English, Russian map features;
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- ``en_US`` -- response in English, American map features;
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- ``ru_RU`` -- Russian (default);
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- ``uk_UA`` -- Ukrainian;
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- ``be_BY`` -- Belarusian.
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:rtype: ``None``, :class:`geopy.location.Location` or a list of them, if
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``exactly_one=False``.
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"""
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params = {
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'geocode': query,
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'format': 'json'
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}
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params['apikey'] = self.api_key
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if lang:
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params['lang'] = lang
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if exactly_one:
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params['results'] = 1
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url = "?".join((self.api, urlencode(params)))
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logger.debug("%s.geocode: %s", self.__class__.__name__, url)
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callback = partial(self._parse_json, exactly_one=exactly_one)
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return self._call_geocoder(url, callback, timeout=timeout)
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def reverse(
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self,
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query,
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*,
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exactly_one=True,
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timeout=DEFAULT_SENTINEL,
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kind=None,
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lang=None
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):
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"""
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Return an address by location point.
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:param query: The coordinates for which you wish to obtain the
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closest human-readable addresses.
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:type query: :class:`geopy.point.Point`, list or tuple of ``(latitude,
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longitude)``, or string as ``"%(latitude)s, %(longitude)s"``.
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:param bool exactly_one: Return one result or a list of results, if
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available.
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:param int timeout: Time, in seconds, to wait for the geocoding service
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to respond before raising a :class:`geopy.exc.GeocoderTimedOut`
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exception. Set this only if you wish to override, on this call
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only, the value set during the geocoder's initialization.
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:param str kind: Type of toponym. Allowed values: `house`, `street`, `metro`,
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`district`, `locality`.
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:param str lang: Language of the response and regional settings
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of the map. List of supported values:
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- ``tr_TR`` -- Turkish (only for maps of Turkey);
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- ``en_RU`` -- response in English, Russian map features;
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- ``en_US`` -- response in English, American map features;
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- ``ru_RU`` -- Russian (default);
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- ``uk_UA`` -- Ukrainian;
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- ``be_BY`` -- Belarusian.
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:rtype: ``None``, :class:`geopy.location.Location` or a list of them, if
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``exactly_one=False``.
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"""
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try:
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point = self._coerce_point_to_string(query, "%(lon)s,%(lat)s")
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except ValueError:
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raise ValueError("Must be a coordinate pair or Point")
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params = {
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'geocode': point,
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'format': 'json'
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}
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params['apikey'] = self.api_key
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if lang:
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params['lang'] = lang
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if kind:
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params['kind'] = kind
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url = "?".join((self.api, urlencode(params)))
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logger.debug("%s.reverse: %s", self.__class__.__name__, url)
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callback = partial(self._parse_json, exactly_one=exactly_one)
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return self._call_geocoder(url, callback, timeout=timeout)
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def _parse_json(self, doc, exactly_one):
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"""
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Parse JSON response body.
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"""
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if doc.get('error'):
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raise GeocoderServiceError(doc['error']['message'])
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try:
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places = doc['response']['GeoObjectCollection']['featureMember']
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except KeyError:
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raise GeocoderParseError('Failed to parse server response')
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def parse_code(place):
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"""
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Parse each record.
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"""
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try:
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place = place['GeoObject']
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except KeyError:
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raise GeocoderParseError('Failed to parse server response')
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longitude, latitude = (
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float(_) for _ in place['Point']['pos'].split(' ')
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)
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name_elements = ['name', 'description']
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location = ', '.join([place[k] for k in name_elements if place.get(k)])
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return Location(location, (latitude, longitude), place)
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if exactly_one:
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try:
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return parse_code(places[0])
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except IndexError:
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return None
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else:
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return [parse_code(place) for place in places]
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