Fix python-fastapi signature of parameters for method

Author: diorcety

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractPythonCodegen.java

@@ -51,6 +51,7 @@
 import org.openapitools.codegen.CodegenOperation;
 import org.openapitools.codegen.CodegenParameter;
 import org.openapitools.codegen.CodegenProperty;
+import org.openapitools.codegen.CodegenResponse;
 import org.openapitools.codegen.DefaultCodegen;
 import org.openapitools.codegen.GeneratorLanguage;
 import org.openapitools.codegen.IJsonSchemaValidationProperties;
@@ -1263,6 +1264,20 @@ public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<Mo
                 );
             }
 
+            // update typing import for operation responses type
+            for (CodegenResponse response : operation.responses) {
+                    // Not interested in the result, only in the update of the imports
+                    getPydanticType(
+                            response.returnProperty,
+                            modelImports,
+                            exampleImports,
+                            postponedModelImports,
+                            postponedExampleImports,
+                            moduleImports,
+                            null
+                    );
+            }
+
             // add import for code samples
             // import models one by one
             if (!exampleImports.isEmpty()) {

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonFastAPIServerCodegen.java

@@ -234,6 +234,8 @@ public String getTypeDeclaration(Schema p) {
 
     @Override
     public OperationsMap postProcessOperationsWithModels(OperationsMap objs, List<ModelMap> allModels) {
+        super.postProcessOperationsWithModels(objs, allModels);
+
         OperationMap operations = objs.getOperations();
         // Set will make sure that no duplicated items are used.
         Set<String> securityImports = new HashSet<>();

modules/openapi-generator/src/main/resources/python-fastapi/param_type.mustache

@@ -1 +1 @@
-{{#isString}}str{{/isString}}{{#isInteger}}int{{/isInteger}}{{#isLong}}int{{/isLong}}{{#isFloat}}float{{/isFloat}}{{#isDouble}}float{{/isDouble}}{{#isByteArray}}str{{/isByteArray}}{{#isBinary}}str{{/isBinary}}{{#isBoolean}}bool{{/isBoolean}}{{#isDate}}str{{/isDate}}{{#isDateTime}}str{{/isDateTime}}{{#isModel}}{{dataType}}{{/isModel}}{{#isContainer}}{{dataType}}{{/isContainer}}
+{{{vendorExtensions.x-py-typing}}}