IEX-2360 update template generation for Python3 constructors

Author: thomasc-adyen

templates/api-single.mustache

@@ -14,7 +14,7 @@ class Adyen{{#lambda.titlecase}}{{serviceName}}{{/lambda.titlecase}}Api(AdyenSer
     """
 
     def __init__(self, client=None):
-        super(Adyen{{#lambda.titlecase}}{{serviceName}}{{/lambda.titlecase}}Api, self).__init__(client=client)
+        super().__init__(client=client)
         {{#apiInfo}}
         {{#apis}}
         self.{{#lambda.lowercase}}{{classFilename}}{{/lambda.lowercase}} = {{classname}}(client=client)

templates/api-small.mustache

@@ -9,7 +9,7 @@ class Adyen{{#lambda.titlecase}}{{serviceName}}{{/lambda.titlecase}}Api(AdyenSer
     """
 
     def __init__(self, client=None):
-        super(Adyen{{#lambda.titlecase}}{{serviceName}}{{/lambda.titlecase}}Api, self).__init__(client=client)
+        super().__init__(client=client)
         self.service = "{{serviceName}}"
         self.baseUrl = "{{basePath}}"
 

templates/api.mustache

@@ -9,7 +9,7 @@ class {{classname}}(AdyenServiceBase):
     """
 
     def __init__(self, client=None):
-        super({{classname}}, self).__init__(client=client)
+        super().__init__(client=client)
         self.service = "{{serviceName}}"
         self.baseUrl = "{{basePath}}"