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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 _addMethod(self, effect, verb, resource, conditions):
 """Adds a method to the internal lists of allowed or denied methods. Each object in the internal list contains a resource ARN and a condition statement. The condition statement can be null."""

        if verb != "*" and not hasattr(HttpVerb, verb):
            raise NameError("Invalid HTTP verb " + verb + ". Allowed verbs in HttpVerb class")
        resourcePattern = re.compile(self.pathRegex)
        if not resourcePattern.match(resource):
            raise NameError("Invalid resource path: " + resource + ". Path should match " + self.pathRegex)

        if resource[:1] == "/":
            resource = resource[1:]

        resourceArn = ("arn:aws:execute-api:" +
            self.region + ":" +
            self.awsAccountId + ":" +
            self.restApiId + "/" +
            self.stage + "/" +
            verb + "/" +
            resource)

        if effect.lower() == "allow":
            self.allowMethods.append({
                'resourceArn' : resourceArn,
                'conditions' : conditions
            })
        elif effect.lower() == "deny":
            self.denyMethods.append({
                'resourceArn' : resourceArn,
                'conditions' : conditions
            })