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https://github.com/openelections/openelections-core

Core repo for election results data acquisition, transformation and output.
https://github.com/openelections/openelections-core

elections openelections

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Core repo for election results data acquisition, transformation and output.

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## Open Elections core code

[![Build Status](https://travis-ci.org/openelections/openelections-core.svg?branch=dev)](https://travis-ci.org/openelections/openelections-core)

Core repo for election results data acquisition, transformation and output.

OpenElections core is developed and tested using Python 3. The package
might not work with older Python distributions.

### Getting started as a developer

You'll:

* set up a virtual environment
* fork/clone this repository, install dependencies
* add any optional configuration details you need (e.g. Mongo or AWS)

#### Setting up a virtual environment

You should use [pipenv](https://pipenv.readthedocs.io/en/latest/) to work on Open Elections inside a virtualized development environment.

The easiest way is to install these tools system-wide with `pip` (you may need to use `sudo`):

```bash
$ pip install --upgrade pipenv
```

Then, to make a virtual environment for open elections work:

```bash
$ pipenv install --dev
```

To activate the virtual environment, run:

```bash
$ pipenv shell
```

#### Fork and set up this project

[Fork this repo](https://help.github.com/articles/fork-a-repo) by hitting the "Fork" button above, and clone your fork to your computer:

```bash
$ git clone https://github.com/[my_github_user]/openelections-core.git
$ cd openelections-core
```

Turn setup and activate the virtual environment from the previous step, if you haven't already:

```bash
$ pipenv install --dev
$ pipenv shell
```

Install MongoDB

To store your data in MongoDB, you need only [install Mongo](http://docs.mongodb.org/manual/installation/). The [default configuration](https://github.com/openelections/openelections-core/blob/master/settings.py.tmplt#L7-L20) should auto-create the databases and tables you need, as you need them.

At the very least, you'll want to make sure the values in the ``MONGO`` variable work for the way you've installed and configured MongoDB on your system.

Create a `settings.py` file.

```bash
$ cp settings.py.tmplt settings.py
```

You can put this settings file anywhere on your filesystem. You'll need to set the ``OPENELEX_SETTINGS`` environment variable to the [absolute path](http://en.wikipedia.org/wiki/Path_(computing)) to the ``settings.py`` file that you created.

You can set the `OPENELEX_SETTINGS` environment variable by creating a `.env` file in your repository. For example:

```
OPENELEX_SETTINGS=/Users/[myusername]/Development/openelections-core/settings.py
```

Running `pipenv shell` will automatically source any variable in your `.env` file.

#### Running management commands

Test it out by running `openelex --help`, you should see something like:

```bash
$ openelex --help
Usage: openelex [OPTIONS] COMMAND [ARGS]...

Options:
--help Show this message and exit.

Commands:
bake.election_file Write election and candidate data with on...
bake.results_status_json Output a JSON file describing available...
bake.state_file Write election and candidate data along
with...
cache.clear Delete files in state cache diretory
cache.files List files in state cache diretory
datasource.elections List elections for a state.
datasource.filename_url_pairs List mapping of standard filenames to
source...
datasource.mappings List metadata mappings for a state
datasource.target_urls List source data urls for a state
fetch Scrape data files and store in local file...
load.run Load cached data files into the database
load_metadata.run Populate metadata in database from fixture...
publish Publish baked result files
shell Open a Python shell, bootstrapping the...
transform.list Show available data transformations
transform.reverse Reverse a previously run transformation
transform.run Run data transformations
validate.list Show available validations for state
validate.run Run data validations for state
```

Running commands looks something like this:

```bash
$ openelex cache.clear --state=NY
0 files deleted
0 files still in cache
```

You can also get help on particular commands, e.g. `openelex --help cache.clear`.

#### Configuring services (optional)

If you are going to load results, you need to configure MongoDB connections in
`openelex/settings.py`.

If you are a core contributor who needs to publish baked results to one of the GitHub repositories, you will need to define further settings.

To set GitHub credentials, you must first create a [personal access token](https://help.github.com/articles/creating-an-access-token-for-command-line-use) and then uncomment and set these values in `openelex/settings.py`:

```python
GITHUB_USERNAME = ''
GITHUB_ACCESS_TOKEN = ''
```

#### Load party and office metadata (optional)

You only need to do this if you plan to write data loaders or transforms.

```bash
$ cd openelex
$ openelex load_metadata.run --collection=office
$ openelex load_metadata.run --collection=party
```