Use more concise code for dict generation

Author: ottmar-zittlau

modules/openapi-generator/src/main/resources/python-pydantic-v1/model_generic.mustache

@@ -321,41 +321,30 @@ class {{classname}}({{#parent}}{{{.}}}{{/parent}}{{^parent}}BaseModel{{/parent}}
             {{^items.isEnumOrRef}}
             {{#items.isContainer}}
             {{#items.isMap}}
-            "{{{name}}}": dict(
-                (_k, dict(
-                    (_ik, {{{items.items.dataType}}}.from_dict(_iv))
-                        for _ik, _iv in _v.items()
-                    )
-                    if _v is not None
-                    else None
-                )
+            "{{{name}}}": {
+                _k: {_ik: {{{items.items.dataType}}}.from_dict(_iv) for _ik, _iv in _v.items()} if _v is not None else None
                 for _k, _v in obj.get("{{{baseName}}}").items()
-            )
+            }
             if obj.get("{{{baseName}}}") is not None
             else None{{^-last}},{{/-last}}
             {{/items.isMap}}
             {{#items.isArray}}
-            "{{{name}}}": dict(
-                (_k,
-                        [{{{items.items.dataType}}}.from_dict(_item) for _item in _v]
-                        if _v is not None
-                        else None
-                )
+            "{{{name}}}": {
+                _k: [{{{items.items.dataType}}}.from_dict(_item) for _item in _v] if _v is not None else None
                 for _k, _v in obj.get("{{{baseName}}}").items()
-            ){{^-last}},{{/-last}}
+            }{{^-last}},{{/-last}}
             {{/items.isArray}}
             {{/items.isContainer}}
             {{^items.isContainer}}
-            "{{{name}}}": dict(
-                (_k, {{{items.dataType}}}.from_dict(_v))
-                for _k, _v in obj.get("{{{baseName}}}").items()
-            )
+            "{{{name}}}": {
+                _k: {{{items.dataType}}}.from_dict(_v) for _k, _v in obj.get("{{{baseName}}}").items()
+            }
             if obj.get("{{{baseName}}}") is not None
             else None{{^-last}},{{/-last}}
             {{/items.isContainer}}
             {{/items.isEnumOrRef}}
             {{#items.isEnumOrRef}}
-            "{{{name}}}": dict((_k, _v) for _k, _v in obj.get("{{{baseName}}}").items()){{^-last}},{{/-last}}
+            "{{{name}}}": obj.get("{{{baseName}}}"){{^-last}},{{/-last}}
             {{/items.isEnumOrRef}}
             {{/items.isPrimitiveType}}
             {{#items.isPrimitiveType}}