commute 0.2

This is a helper script for multi-modal commute planning based on the information that you specify.

commute.py helps users who travel across multiple modes of transport

and multiple waypoints to make data-based decisions about which route

to use and prefer at a given time or at a given time in future.

Table of contents

• Sample Usage
• Installation
• Configuration
  • Get the Google API key
  • Create the configuration file
    • Sample configuration
    • Parts of the configuration file
      • api_key
      • places
      • map
• Usage
• Status

Sample Usage

$ commute -c config.yml -s HOME -d WORK
Total time: 26min.
Home (time: 26m. w/traffic drive)
Work
-----
Total time: 43min.
Home (time: 41m. waiting: 02min. bus)
Work
-----
Total time: 45min.
Home (time: 25m. w/traffic drive)
Kwik-e-Mart (time: 20m. w/traffic drive)
Work
-----
  ....

Installation

You can easily install this script using either pip or easy_install

$ pip install commute

or

$ easy_install commute

Configuration

Get the Google API key

This information is borrowed from Google Maps Python client repo

Each Google Maps Web Service requires an API key or Client ID. API keys are

freely available with a Google Account at https://developers.google.com/console.

To generate a server key for your project:

1. Visit https://developers.google.com/console and log in with a Google Account.
2. Select an existing project, or create a new project.
3. Click Enable an API.
4. Browse for the API, and set its status to “On”. The Python Client for Google Maps Services accesses the following APIs:
   • Directions API
   • Distance Matrix API
   • Elevation API
   • Geocoding API
   • Time Zone API
   • Roads API
5. Once you’ve enabled the APIs, click Credentials from the left navigation of the Developer Console.
6. In the “Public API access”, click Create new Key.
7. Choose Server Key.
8. If you’d like to restrict requests to a specific IP address, do so now.
9. Click Create.

Your API key should be 40 characters long, and begin with AIza.

Create the configuration file

Then you will need to create a config.yml file, or just any yaml file with the following key fields

api_key:    # your Google API key over here
places:     # all the places which need to be tracked
map:        # the map, or essentially how you commute between any two places

Sample configuration

api_key: AIzaaaaaaaaaaaaaaaaaaaaaaaaaaa

places:
    HOME:
        location: 742, Evergreen Terrace, Springfield
        alias: Home
    WORK:
        location: Springfield Nuclear Power Plant, Springfield
        alias: Work
    KWIK_E_MART:
        location: Kwik-e-Mart, Springfield
        alias: Apu's
    MOES_TAVERN:
        location: Moe's Tavern, Springfield
        alias: Moe's

map:
    HOME:
        KWIK_E_MART:
            - mode: driving
        MOES_TAVERN:
            - mode: driving
            - mode: walking
        WORK:
            - mode: driving
            - mode: transit
              transit_mode: bus
    KWIK_E_MART:
        HOME:
            - mode: driving
        MOES_TAVERN:
            - mode: driving
            - mode: walking
        WORK:
            - mode: driving
    MOES_TAVERN:
        HOME:
            - mode: driving  # drinking and driving is not encouraged
            - mode: walking
        # You don't go to Kwik-e-mart or to work from Moe's
    WORK:
        MOES_TAVERN:
            - mode: driving

Parts of the configuration file

api_key

api_key will hold the information about the Google Developer’s API key.

places

places holds information about all the places to be taken under

consideration, and a small description about their physical address

add how to refer to them in the output

Each place has two attributes

- location: the physical location of the place (the thing you type into Google Maps).

- alias: an alias to refer by and to use while printing the output.

map

map key contains all the connections between the places, possible

ways to travel between the places and multiple ways, if any

It can also contain other detailed information about the specific way of travel.

The first nesting under map contains the source, use the identifier from the places key above.

map:
    PLACE1:
        PLACE2:
            ....
        ....
    ....

The next nesting contains a map of possible destinations from the source, which contains the possible ways to travel from the source to the destination

map:
    PLACE1:
        PLACE2:
            - mode: driving
            - mode: transit
            ....
        ....
    ....

The routing information supports all the arguments that the Google Maps python client takes. For more information refer to Google Maps Python API documentation

Usage

$ commute -c config.yml -s HOME -d WORK
$ commute -c config.yml -s HOME -d WORK -w now
$ commute -c config.yml -s HOME -d WORK -w 'in an hour'
$ commute -c config.yml -s HOME -d WORK -w 'friday evening @ 7'

The date/time parsing is done with the help of parsedatetime library, so look at the

documentation to find more about the formats supported.

For using it as a library,

import time
from commute import get_all_paths, format_path

config_file = "/path/to/config/file"
src = "HOME"
dst = "WORK"
when = time.time()

for rank, path in get_all_paths(config, src, dst, when):
    print(format_path(rank, path))
    print("-" * 5)

Status

This project is at a very early stage right now. Please try it out and report any issues.