/usr/lib/python3/dist-packages/geopy/geocoders/geonames.py is in python3-geopy 1.11.0+ds1-1.
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:class:`GeoNames` geocoder.
"""
from geopy.compat import urlencode
from geopy.geocoders.base import Geocoder, DEFAULT_TIMEOUT
from geopy.location import Location
from geopy.exc import (
GeocoderInsufficientPrivileges,
GeocoderServiceError,
ConfigurationError
)
from geopy.util import logger
__all__ = ("GeoNames", )
class GeoNames(Geocoder): # pylint: disable=W0223
"""
GeoNames geocoder, documentation at:
http://www.geonames.org/export/geonames-search.html
Reverse geocoding documentation at:
http://www.geonames.org/maps/us-reverse-geocoder.html
"""
def __init__(
self,
country_bias=None,
username=None,
timeout=DEFAULT_TIMEOUT,
proxies=None,
user_agent=None,
):
"""
:param string country_bias:
:param string username:
:param int timeout: Time, in seconds, to wait for the geocoding service
to respond before raising a :class:`geopy.exc.GeocoderTimedOut`
exception.
.. versionadded:: 0.97
:param dict proxies: If specified, routes this geocoder's requests
through the specified proxy. E.g., {"https": "192.0.2.0"}. For
more information, see documentation on
:class:`urllib2.ProxyHandler`.
.. versionadded:: 0.96
"""
super(GeoNames, self).__init__(
scheme='http', timeout=timeout, proxies=proxies, user_agent=user_agent
)
if username == None:
raise ConfigurationError(
'No username given, required for api access. If you do not '
'have a GeoNames username, sign up here: '
'http://www.geonames.org/login'
)
self.username = username
self.country_bias = country_bias
self.api = "%s://api.geonames.org/searchJSON" % self.scheme
self.api_reverse = (
"%s://api.geonames.org/findNearbyPlaceNameJSON" % self.scheme
)
def geocode(self, query, exactly_one=True, timeout=None): # pylint: disable=W0221
"""
Geocode a location query.
:param string query: The address or query you wish to geocode.
:param bool exactly_one: Return one result or a list of results, if
available.
:param int timeout: Time, in seconds, to wait for the geocoding service
to respond before raising a :class:`geopy.exc.GeocoderTimedOut`
exception. Set this only if you wish to override, on this call
only, the value set during the geocoder's initialization.
.. versionadded:: 0.97
"""
params = {
'q': query,
'username': self.username
}
if self.country_bias:
params['countryBias'] = self.country_bias
if exactly_one is True:
params['maxRows'] = 1
url = "?".join((self.api, urlencode(params)))
logger.debug("%s.geocode: %s", self.__class__.__name__, url)
return self._parse_json(
self._call_geocoder(url, timeout=timeout),
exactly_one,
)
def reverse(
self,
query,
exactly_one=False,
timeout=None,
):
"""
Given a point, find an address.
.. versionadded:: 1.2.0
:param string query: The coordinates for which you wish to obtain the
closest human-readable addresses.
:type query: :class:`geopy.point.Point`, list or tuple of (latitude,
longitude), or string as "%(latitude)s, %(longitude)s"
:param boolean exactly_one: Return one result or a list of results, if
available.
:param int timeout: Time, in seconds, to wait for the geocoding service
to respond before raising a :class:`geopy.exc.GeocoderTimedOut`
exception.
"""
try:
lat, lng = [
x.strip() for x in
self._coerce_point_to_string(query).split(',')
]
except ValueError:
raise ValueError("Must be a coordinate pair or Point")
params = {
'lat': lat,
'lng': lng,
'username': self.username
}
url = "?".join((self.api_reverse, urlencode(params)))
logger.debug("%s.reverse: %s", self.__class__.__name__, url)
return self._parse_json(
self._call_geocoder(url, timeout=timeout),
exactly_one
)
def _parse_json(self, doc, exactly_one):
"""
Parse JSON response body.
"""
places = doc.get('geonames', [])
err = doc.get('status', None)
if err and 'message' in err:
if err['message'].startswith("user account not enabled to use"):
raise GeocoderInsufficientPrivileges(err['message'])
else:
raise GeocoderServiceError(err['message'])
if not len(places):
return None
def parse_code(place):
"""
Parse each record.
"""
latitude = place.get('lat', None)
longitude = place.get('lng', None)
if latitude and longitude:
latitude = float(latitude)
longitude = float(longitude)
else:
return None
placename = place.get('name')
state = place.get('adminCode1', None)
country = place.get('countryCode', None)
location = ', '.join(
[x for x in [placename, state, country] if x]
)
return Location(location, (latitude, longitude), place)
if exactly_one:
return parse_code(places[0])
else:
return [parse_code(place) for place in places]
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