HERE Location Services for Python

A Python client for HERE Location Services.

Usage

Geocoding using HERE Geocoding & Search API.

Isolines using HERE Isoline Routing API.

Prerequisites

Before you can install HERE Location Services for Python, run its test-suite, or use the example notebooks to make sure you meet the following prerequisites:

• A Python installation, 3.6+ recommended, with the pip command available to install dependencies.
• In order to use Location services APIs, authentication is required. There are two ways to authenticate:

  • Authentication using an API key:

    • For API key-based authentication you will need a HERE developer account, freely available under HERE Developer Portal.
    • An API key from the HERE Developer Portal, in an environment variable named LS_API_KEY which you can set like this (with a valid value, of course):

      $ export LS_API_KEY="MY-LS-API-KEY"

  • OAuth token-based authentication:

    • For OAuth token authentication you will need an account on the HERE Platform. To get more details on the HERE Platform account please check our documentation Get a HERE account. Once you have the account follow the below steps to get credentials:
    • Go to HERE Platform Applications and Keys and register a new app.
    • Create a key for the app and download the generated credentials. properties file.

    The HERE platform generated app credentials should look similar to the example below:

    here.user.id = <example_here>
    here.client.id = <example_here>
    here.access.key.id = <example_here>
    here.access.key.secret = <example_here>
    here.token.endpoint.url = <example_here>
    

    You can provide your credentials using any of the following methods:

    • Default credentials
    • Environment variables
    • Credentials file

    Default credentials

    Place the credentials file into

    For Linux/MacOS: $HOME/.here/credentials.properties

    For Windows: %USERPROFILE%\.here\credentials.properties Code snippet to instantiate LS object:

    from here_location_services import LS
    
    # platform credentials will be picked from the default credentials file's location mentioned above
    # and api_key should not be set in env variable LS_API_KEY.
    ls = LS()

    Environment Variables

    You can override default credentials by assigning values to the following environment variables:

    HERE_USER_ID
    HERE_CLIENT_ID
    HERE_ACCESS_KEY_ID
    HERE_ACCESS_KEY_SECRET
    HERE_TOKEN_ENDPOINT_URL
    

    Code snippet to instantiate LS object:

    from here_location_services import LS
    from here_location_services import PlatformCredentials
    
    ls = LS(platform_credentials=PlatformCredentials.from_env()) 

    Credentials File

    You can specify any credentials file as an alternative to that found in ~/.here/credentials.properties. An error is generated if there is no file present at the path, or if the file is not properly formatted. Code snippet to instantiate LS object:

    from here_location_services import LS
    from here_location_services import PlatformCredentials
    
    platform_credentials = PlatformCredentials.from_credentials_file("<Path_to_file>")
    ls = LS(platform_credentials=platform_credentials) 

Installation

• Install HERE Location Services for Python with conda from the Anaconda conda-forge channel using the below command:

  $ conda install -c conda-forge here-location-services

• Install HERE Location Services for Python from PyPI using the below command:

  $ pip install here-location-services

• Install HERE Location Services for Python from GitHub using the below command:

  $ pip install -e git+https://github.com/heremaps/here-location-services-python#egg=here-location-services

Run Test Suite

Run the test suite using below commands:

$ pip install -r requirements_dev.txt
$ pytest -v --cov=here_location_services tests

Documentation

Documentation is available here.

Run the below commands to build the docs locally:

$ pip install -e .
$ pip install -r requirements_dev.txt
$ sh scripts/build_docs.sh

Hello World Example

The following are tiny "Hello World" like examples that you can run to have a successful first HERE Location Services experience right after installation!

Using API key

import json
import os

from here_location_services import LS


LS_API_KEY = os.environ.get("LS_API_KEY")  # Get API KEY from environment.
ls = LS(api_key=LS_API_KEY)

address = "Invalidenstr 116, 10115 Berlin, Germany"
geo = ls.geocode(query=address)
print(json.dumps(geo.to_geojson(), indent=2, sort_keys=True))

Using OAuth token

import json

from here_location_services import LS
from here_location_services import PlatformCredentials

credentials = PlatformCredentials.from_default()
ls = LS(platform_credentials=credentials)

address = "Invalidenstr 116, 10115 Berlin, Germany"
geo = ls.geocode(query=address)
print(json.dumps(geo.to_geojson(), indent=2, sort_keys=True))

License

Copyright (C) 2019-2021 HERE Europe B.V.

See the License file at the root of this project for license details.