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EVELink - Python Bindings for the EVE API

EVELink provides a means to access the EVE API from Python.

Example Usage

import evelink.api  # Raw API access
import evelink.char # Wrapped API access for the /char/ API path
import evelink.eve  # Wrapped API access for the /eve/ API path

# Using the raw access level to get the name of a character
api = evelink.api.API()
response = api.get('eve/CharacterName', {'IDs': [1]})
print response.result.find('rowset').findall('row')[0].attrib['name']

# Using the wrapped access level to get the name of a character
eve = evelink.eve.EVE()
response = eve.character_name_from_id(1)
print response.result

# Using authenticated calls
api = evelink.api.API(api_key=(12345, 'longvcodestring'))
id_response = eve.character_id_from_name("Character Name")
char = evelink.char.Char(char_id = id_response.result, api=api)
balance_response = char.wallet_balance()
print balance_response.result

Dependencies

EVELink does not require any extra dependencies for normal operation.

However, EVELink will make use of the requests library if it is available in your Python environment, as it enables the use of a single persistent HTTP connection for a sequence of EVE API calls for a given API instance. This eliminates the overhead of establishing a new TCP/IP connection for every EVE API call, which in turn results in an overall performance increase. For this reason it is highly recommended to have requests installed, but to keep up with the spirit of keeping EVELink free from external dependencies, it is left to be an option for all users.

If you are developing on EVELink itself (to contribute to this project), the following packages are required in order to run the tests:

  • mock
  • nose
  • unittest2

A requirements.txt is provided as part of the repository for developer convenience.

Design

EVELink aims to support 3 "levels" of access to EVE API resources: raw, wrapped, and object.

Raw access

Raw is the lowest level of access - it's basically just a small class that takes an API path and parameters and the result portion of the APIResult is an xml.etree.ElementTree object. You probably don't want to use this layer of access, but it can be useful for API calls that EVELink doesn't yet support at a higher level of access.

All APIResult objects also contain timestamp and expires fields, which indicate the time when the result was obtained from the API and the time when the cached value expires, respectively.

Wrapped access

Wrapped is the middle layer of access. The methods in the wrapped access layer still map directly to EVE API endpoints, but are "nicer" to work with. They're actual Python functions, so you can be sure you're passing the right arguments. Their APIResult result fields contain basic Python types which are simple to work with.

Object access

(not yet implemented)

Object access is the highest layer of access and the most encapsulated. Though implementation is being deferred until after the wrapped access layer is more complete, the goal here is to essentially emulate a set of ORM objects, allowing you do to things like Character(id=1234).corporation.name to fetch the name of the corporation that the character with ID 1234 is in.

Development

Build Status

To acquire a development copy of the library and set up the requirements for testing:

$ git clone https://github.com/eve-val/evelink.git
$ cd evelink
$ virtualenv venv
$ source venv/bin/activate
$ pip install -r requirements.txt

To run the tests:

$ nosetests

To run the tests, including the appengine ones (this requires that you have Google AppEngine's python SDK installed):

$ nosetests --with-gae

Additional information for developers is available here.

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