awspricing 1.0.0

# awspricing

A Python library for working with the [AWS Price List API](http://docs.aws.amazon.com/awsaccountbilling/latest/aboutv2/price-changes.html).

Features:
* Simple boto3-like interface
* Service-specific helper functions (only EC2 thus far)
* Local caching support

## Installation

```sh
$ pip install awspricing
```

## Usage

```python
import awspricing

ec2_offer = awspricing.offer('AmazonEC2')

ec2_offer.search_skus(
instance_type='c4.large',
location='US East (N. Virginia)',
operating_system='Linux',
) # {'4C7N4APU9GEUZ6H6', 'MBQPYDJSY3BY84BH', 'MDKVAJXMJGZFDJUE'}

ec2_offer.reserved_hourly(
'c4.xlarge',
operating_system='Linux',
lease_contract_length='3yr',
offering_class='convertible',
purchase_option='Partial Upfront',
region='us-east-1'
) # 0.10845205479452055
```

## Configuration

### Cache

Cache can be configured via the following environment variables:

`AWSPRICING_USE_CACHE`: Whether to use a simple file-based cache. Valid values are `0|1`. Defaults to `0` (false).

`AWSPRICING_CACHE_PATH`: Prefix to write cache files. Defaults to `/tmp/awspricing`.

`AWSPRICING_CACHE_MINUTES`: Number of minutes to keep cache for. Defaults to `1440` (1 day).


## Developing

### Environment setup

Run the following commands (preferably in a virtualenv) to setup your environment:

```sh
python setup.py develop
pip install -r test-requirements.txt
```

### Running unit tests

Simply run `make test` after environment setup to run unit tests.

### Running mypy (type checker)

The following commands can be used to run type checks. Note that a `python3`
interpreter is required for mypy.

```sh
pip install mypy
make test_mypy
```