Return 'You' if value is equal to arg.
        Parameters:
            value should be a userprofile
            arg should be another user.
        Ideally, value should be a userprofile from an object and arg the user logged in.

def display_user(value, arg):
    ''' Return 'You' if value is equal to arg.
        Parameters:
            value should be a userprofile
            arg should be another user.
        Ideally, value should be a userprofile from an object and arg the user logged in.
    '''
    if value.user == arg and arg.username != ANONYMOUS_USERNAME:
        return "You"
    else:
        return value.user.get_full_name()