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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def get_prs(repo_name=None,
            profile='github',
            state='open',
            head=None,
            base=None,
            sort='created',
            direction='desc',
            output='min',
            per_page=None):
    '''
    Returns information for all pull requests in a given repository, based on
    the search options provided.

    .. versionadded:: 2017.7.0

    repo_name
        The name of the repository for which to list pull requests. This
        argument is required, either passed via the CLI, or defined in the
        configured profile. A ``repo_name`` passed as a CLI argument will
        override the ``repo_name`` defined in the configured profile, if
        provided.

    profile
        The name of the profile configuration to use. Defaults to ``github``.

    state
        Indicates the state of the pull requests to return. Can be either
        ``open``, ``closed``, or ``all``. Default is ``open``.

    head
        Filter pull requests by head user and branch name in the format of
        ``user:ref-name``. Example: ``'github:new-script-format'``. Default
        is ``None``.

    base
        Filter pulls by base branch name. Example: ``gh-pages``. Default is
        ``None``.

    sort
        What to sort results by. Can be either ``created``, ``updated``,
        ``popularity`` (comment count), or ``long-running`` (age, filtering
        by pull requests updated within the last month). Default is ``created``.

    direction
        The direction of the sort. Can be either ``asc`` or ``desc``. Default
        is ``desc``.

    output
        The amount of data returned by each pull request. Defaults to ``min``.
        Change to ``full`` to see all pull request output.

    per_page
        GitHub paginates data in their API calls. Use this value to increase or
        decrease the number of pull requests gathered from GitHub, per page. If
        not set, GitHub defaults are used. Maximum is 100.

    CLI Example:

    .. code-block:: bash

        salt myminion github.get_prs
        salt myminion github.get_prs base=2016.11
    '''
    org_name = _get_config_value(profile, 'org_name')
    if repo_name is None:
        repo_name = _get_config_value(profile, 'repo_name')

    action = '/'.join(['repos', org_name, repo_name])
    args = {}

    # Build API arguments, as necessary.
    if head:
        args['head'] = head
    if base:
        args['base'] = base
    if per_page:
        args['per_page'] = per_page

    # Only pass the following API args if they're not the defaults listed.
    if state and state != 'open':
        args['state'] = state
    if sort and sort != 'created':
        args['sort'] = sort
    if direction and direction != 'desc':
        args['direction'] = direction

    ret = {}
    prs = _query(profile, action=action, command='pulls', args=args)

    for pr_ in prs:
        pr_id = pr_.get('id')
        if output == 'full':
            ret[pr_id] = pr_
        else:
            ret[pr_id] = _format_pr(pr_)

    return ret