turkflow 0.2.2

Library for creating Mechanical Turk workflows in python scripts.

turkflow
========

Library for quickly creating Mechanical Turk workflows. In some ways, turkflow ended up being an accidental re-implementation of [TurKit](http://dl.acm.org/citation.cfm?id=1866029.1866040&coll=DL&dl=GUIDE&CFID=308021477&CFTOKEN=94691217).

``turkflow`` allows you to specify arbitrary HTML HITs in [jinja2](http://jinja.pocoo.org/docs/) template files and python objects. It also provides functionality for waiting on the results of those HITs, checking HITs previously created by ``turkflow`` for completion, and parsing the results into a python structure.

## Installation
The recommended way to install ``turkflow`` is with ``pip``:

pip install turkflow

You also need to create a [boto configuration file](https://code.google.com/p/boto/wiki/BotoConfig) with your Amazon AWS information.

## Usage

Here is a minimal example of a ``turkflow`` program:

```python
from turkflow.turkflow import *
from jinja2 import *

# create jinja2 environment using "templates" subdirectory
env = Environment(loader=PackageLoader('turkflow', 'templates'))

class TestHIT(TurkHITType):
def __init__(self):
TurkHITType.__init__(self,
"This is a test HIT",
string.split('keywords'),
description = 'test description',
duration = 600, # seconds
max_assignments = 50,
annotation = 'test', # by default, this will make turkflow look for a "test.html" jinja2 template
reward = 0.05,
env = env)

tc = TurkConnection("turkflow_test_id", "~/scratch")
hit_key = tc.createHIT(TestHIT())
results, completion_times = tc.waitForHIT(hit_key, timeout=30) # stop polling after 30 seconds
```

In a 'templates' subdirectory, we include ``base.html`` included in the turkflow repository and our own html file, ``test.html``:

```html
{% extends "base.html" %}

{% block question_content %}
<p id="name_q">What is your name?</p>
<!-- turk questions are identified by "name" so that you can gather multiple responses to the same question -->
<input type="text" name="name_q" placeholder="Clara">
{% endblock %}
```