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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_proxy_bypass(network_service="Ethernet"):
    '''
    Returns the current domains that can bypass the proxy

    network_service
        The network service to get the bypass domains from, this is only
        necessary on macOS

    CLI Example:

    .. code-block:: bash

        salt '*' proxy.get_proxy_bypass

    '''
    if __grains__['os'] == 'Windows':
        reg_val = __utils__['reg.read_value'](
            hive='HKEY_CURRENT_USER',
            key=r'SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings',
            vname='ProxyOverride')['vdata']

        # `reg.read_value` returns None if the key doesn't exist
        if reg_val is None:
            return []

        return reg_val.replace('<local>', '').split(';')

    out = __salt__['cmd.run']('networksetup -getproxybypassdomains {0}'.format(network_service))

    return out.split("\n")