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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 user(self, base_dn, samaccountname, attributes=(), explicit_membership_only=False):
 """Produces a single, populated ADUser object through the object factory. Does not populate attributes for the caller instance. :param str base_dn: The base DN to search within :param str samaccountname: The user's sAMAccountName :param list attributes: Object attributes to populate, defaults to all :param bool explicit_membership_only: If set True, memberof will only list groups for which the user is a directly referenced member :return: A populated ADUser object :rtype: ADUser """


        users = self.users(base_dn, samaccountnames=[samaccountname],
                           attributes=attributes, explicit_membership_only=explicit_membership_only)

        try:
            # Usually we will find a match, but perhaps not always
            return users[0]
        except IndexError:
            logging.info("%s - unable to retrieve object from AD by sAMAccountName", samaccountname)