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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_enabled(runas=None):
    '''
    Return a list of all services that are enabled. Can be used to find the
    name of a service.

    :param str runas: User to run launchctl commands

    :return: A list of all the services enabled on the system
    :rtype: list

    CLI Example:

    .. code-block:: bash

        salt '*' service.get_enabled
    '''
    # Collect list of enabled services
    stdout = list_(runas=runas)
    service_lines = [line for line in stdout.splitlines()]

    # Construct list of enabled services
    enabled = []
    for line in service_lines:
        # Skip header line
        if line.startswith('PID'):
            continue

        pid, status, label = line.split('\t')
        enabled.append(label)

    return sorted(set(enabled))