[Bug] [Python] Fix #2092 python docs example quoting (#2669)

* replaced setParameterExampleValue method

* removed old method

* fixed bool, test fix for objects

* continued fix

* double override

* regenerated petstore client

* regenerated oas3 sample

* updated asyncio and tornado generated clients for CI

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

@@ -17,8 +17,10 @@
 
 package org.openapitools.codegen.languages;
 
+import io.swagger.v3.oas.models.examples.Example;
 import io.swagger.v3.oas.models.media.ArraySchema;
 import io.swagger.v3.oas.models.media.Schema;
+import io.swagger.v3.oas.models.parameters.Parameter;
 import org.apache.commons.io.FilenameUtils;
 import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
@@ -704,7 +706,7 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
         }
 
         if (example == null) {
-            example = "NULL";
+            example = "None";
         } else if (Boolean.TRUE.equals(p.isListContainer)) {
             example = "[" + example + "]";
         } else if (Boolean.TRUE.equals(p.isMapContainer)) {
@@ -714,6 +716,24 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
         p.example = example;
     }
 
+    @Override
+    public void setParameterExampleValue(CodegenParameter codegenParameter, Parameter parameter) {
+        Schema schema = parameter.getSchema();
+
+        if (parameter.getExample() != null) {
+            codegenParameter.example = parameter.getExample().toString();
+        } else if (parameter.getExamples() != null && !parameter.getExamples().isEmpty()) {
+            Example example = parameter.getExamples().values().iterator().next();
+            if (example.getValue() != null) {
+                codegenParameter.example = example.getValue().toString();
+            }
+        } else if (schema != null && schema.getExample() != null) {
+            codegenParameter.example = schema.getExample().toString();
+        }
+
+        setParameterExampleValue(codegenParameter);
+    }
+
     @Override
     public String sanitizeTag(String tag) {
         return sanitizeName(tag);

samples/client/petstore/python-asyncio/docs/UserApi.md

@@ -78,7 +78,7 @@ from pprint import pprint
 
 # create an instance of the API class
 api_instance = petstore_api.UserApi()
-body = NULL # list[User] | List of user object
+body = None # list[User] | List of user object
 
 try:
     # Creates list of users with given input array
@@ -124,7 +124,7 @@ from pprint import pprint
 
 # create an instance of the API class
 api_instance = petstore_api.UserApi()
-body = NULL # list[User] | List of user object
+body = None # list[User] | List of user object
 
 try:
     # Creates list of users with given input array

samples/client/petstore/python-tornado/docs/UserApi.md

@@ -78,7 +78,7 @@ from pprint import pprint
 
 # create an instance of the API class
 api_instance = petstore_api.UserApi()
-body = NULL # list[User] | List of user object
+body = None # list[User] | List of user object
 
 try:
     # Creates list of users with given input array
@@ -124,7 +124,7 @@ from pprint import pprint
 
 # create an instance of the API class
 api_instance = petstore_api.UserApi()
-body = NULL # list[User] | List of user object
+body = None # list[User] | List of user object
 
 try:
     # Creates list of users with given input array

samples/client/petstore/python/docs/UserApi.md

@@ -78,7 +78,7 @@ from pprint import pprint
 
 # create an instance of the API class
 api_instance = petstore_api.UserApi()
-body = NULL # list[User] | List of user object
+body = None # list[User] | List of user object
 
 try:
     # Creates list of users with given input array
@@ -124,7 +124,7 @@ from pprint import pprint
 
 # create an instance of the API class
 api_instance = petstore_api.UserApi()
-body = NULL # list[User] | List of user object
+body = None # list[User] | List of user object
 
 try:
     # Creates list of users with given input array

samples/openapi3/client/petstore/python/docs/UserApi.md

@@ -78,7 +78,7 @@ from pprint import pprint
 
 # create an instance of the API class
 api_instance = petstore_api.UserApi()
-user = NULL # list[User] | List of user object
+user = None # list[User] | List of user object
 
 try:
     # Creates list of users with given input array
@@ -124,7 +124,7 @@ from pprint import pprint
 
 # create an instance of the API class
 api_instance = petstore_api.UserApi()
-user = NULL # list[User] | List of user object
+user = None # list[User] | List of user object
 
 try:
     # Creates list of users with given input array