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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_template_setting(template_key, default=None):
 """ Read template settings """

    templates_var = getattr(settings, 'TEMPLATES', None)
    if templates_var:
        for tdict in templates_var:
            if template_key in tdict:
                return tdict[template_key]
    return default