212 lines
6.3 KiB
Python
212 lines
6.3 KiB
Python
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"""
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:class:`.YahooPlaceFinder` geocoder.
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"""
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try:
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from requests import get, Request
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from requests_oauthlib import OAuth1
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requests_missing = False
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except ImportError:
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requests_missing = True
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from geopy.geocoders.base import Geocoder, DEFAULT_TIMEOUT
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from geopy.exc import GeocoderParseError
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from geopy.location import Location
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from geopy.compat import string_compare, text_type
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__all__ = ("YahooPlaceFinder", )
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class YahooPlaceFinder(Geocoder): # pylint: disable=W0223
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"""
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Geocoder that utilizes the Yahoo! BOSS PlaceFinder API. Documentation at:
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https://developer.yahoo.com/boss/geo/docs/
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"""
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def __init__(
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self,
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consumer_key,
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consumer_secret,
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timeout=DEFAULT_TIMEOUT,
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proxies=None,
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user_agent=None,
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): # pylint: disable=R0913
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"""
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:param str consumer_key: Key provided by Yahoo.
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:param str consumer_secret: Secret corresponding to the key
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provided by Yahoo.
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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.
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:param dict proxies: If specified, routes this geocoder"s requests
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through the specified proxy. E.g., {"https": "192.0.2.0"}. For
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more information, see documentation on
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:class:`urllib2.ProxyHandler`.
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.. versionadded:: 0.96
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:param str user_agent: Use a custom User-Agent header.
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.. versionadded:: 1.12.0
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"""
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if requests_missing:
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raise ImportError(
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'requests-oauthlib is needed for YahooPlaceFinder.'
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' Install with `pip install geopy -e ".[placefinder]"`.'
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)
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super(YahooPlaceFinder, self).__init__(
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timeout=timeout, proxies=proxies, user_agent=user_agent
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)
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self.consumer_key = text_type(consumer_key)
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self.consumer_secret = text_type(consumer_secret)
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self.auth = OAuth1(
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client_key=self.consumer_key,
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client_secret=self.consumer_secret,
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signature_method="HMAC-SHA1",
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signature_type="AUTH_HEADER",
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)
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self.api = "https://yboss.yahooapis.com/geo/placefinder"
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@staticmethod
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def _filtered_results(results, min_quality, valid_country_codes):
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"""
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Returns only the results that meet the minimum quality threshold
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and are located in expected countries.
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"""
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if min_quality:
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results = [
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loc
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for loc in results
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if int(loc.raw["quality"]) > min_quality
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]
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if valid_country_codes:
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results = [
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loc
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for loc in results
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if loc.raw["countrycode"] in valid_country_codes
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]
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return results
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def _parse_response(self, content):
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"""
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Returns the parsed result of a PlaceFinder API call.
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"""
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try:
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placefinder = (
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content["bossresponse"]["placefinder"]
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)
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if not len(placefinder) or not len(placefinder.get("results", [])):
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return None
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results = [
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Location(
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self.humanize(place),
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(float(place["latitude"]), float(place["longitude"])),
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raw=place
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)
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for place in placefinder["results"]
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]
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except (KeyError, ValueError):
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raise GeocoderParseError("Error parsing PlaceFinder result")
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return results
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@staticmethod
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def humanize(location):
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"""
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Returns a human readable representation of a raw PlaceFinder location
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"""
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return ", ".join([
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location[line]
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for line in ["line1", "line2", "line3", "line4"]
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if location[line]
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])
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def geocode(
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self,
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query,
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exactly_one=True,
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timeout=None,
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min_quality=0,
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reverse=False,
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valid_country_codes=None,
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with_timezone=False,
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): # pylint: disable=W0221,R0913
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"""
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Geocode a location query.
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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 min_quality:
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:param bool reverse:
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:param valid_country_codes:
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:type valid_country_codes: list or tuple
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:param bool with_timezone: Include the timezone in the response's
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`raw` dictionary (as `timezone`).
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"""
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params = {
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"location": query,
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"flags": "J", # JSON
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}
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if reverse:
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params["gflags"] = "R"
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if exactly_one:
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params["count"] = "1"
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if with_timezone:
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params['flags'] += 'T' #Return timezone
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response = self._call_geocoder(
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self.api,
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timeout=timeout,
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requester=get,
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params=params,
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auth=self.auth,
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)
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results = self._parse_response(response)
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if results is None:
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return None
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results = self._filtered_results(
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results,
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min_quality,
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valid_country_codes,
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)
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if exactly_one:
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return results[0]
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else:
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return results
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def reverse(self, query, exactly_one=True, timeout=None):
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"""
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Returns a reverse geocoded location using Yahoo"s PlaceFinder API.
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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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"""
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query = self._coerce_point_to_string(query)
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if isinstance(query, string_compare):
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query = query.replace(" ", "") # oauth signature failure; todo
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return self.geocode(
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query,
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exactly_one=exactly_one,
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timeout=timeout,
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reverse=True
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)
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