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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 registration_settings(request):
    '''Expose selected settings to templates'''
    context = {}
    for setting in (
            'WAFER_SSO',
            'WAFER_HIDE_LOGIN',
            'WAFER_REGISTRATION_OPEN',
            'WAFER_REGISTRATION_MODE',
            'WAFER_TALKS_OPEN',
            'WAFER_VIDEO_LICENSE',
    ):
        context[setting] = getattr(settings, setting, None)
    return context