[Python] remove singleton (#5012)

* updated tests relying on configuration's singleton

* regenerated samples

* removed singleton from templates

* regenerated samples

* removed broken sample and its test

* reverted accidental change

* regenerated security/ samples

* removed singleton from RESTClientObject

* removed unused Configuration import

* reverted unrelated change

* updated usage examples in api_doc template

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

@@ -73,11 +73,12 @@ from petstore_api.rest import ApiException
 from pprint import pprint
 
 # Configure HTTP basic authorization: http_basic_test
-petstore_api.configuration.username = 'YOUR_USERNAME'
-petstore_api.configuration.password = 'YOUR_PASSWORD'
+configuration = petstore_api.Configuration()
+configuration.username = 'YOUR_USERNAME'
+configuration.password = 'YOUR_PASSWORD'
 
 # create an instance of the API class
-api_instance = petstore_api.FakeApi()
+api_instance = petstore_api.FakeApi(petstore_api.ApiClient(configuration))
 number = 3.4 # float | None
 double = 1.2 # float | None
 pattern_without_delimiter = 'pattern_without_delimiter_example' # str | None

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

@@ -30,10 +30,11 @@ from petstore_api.rest import ApiException
 from pprint import pprint
 
 # Configure OAuth2 access token for authorization: petstore_auth
-petstore_api.configuration.access_token = 'YOUR_ACCESS_TOKEN'
+configuration = petstore_api.Configuration()
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
 
 # create an instance of the API class
-api_instance = petstore_api.PetApi()
+api_instance = petstore_api.PetApi(petstore_api.ApiClient(configuration))
 body = petstore_api.Pet() # Pet | Pet object that needs to be added to the store
 
 try: 
@@ -80,10 +81,11 @@ from petstore_api.rest import ApiException
 from pprint import pprint
 
 # Configure OAuth2 access token for authorization: petstore_auth
-petstore_api.configuration.access_token = 'YOUR_ACCESS_TOKEN'
+configuration = petstore_api.Configuration()
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
 
 # create an instance of the API class
-api_instance = petstore_api.PetApi()
+api_instance = petstore_api.PetApi(petstore_api.ApiClient(configuration))
 pet_id = 789 # int | Pet id to delete
 api_key = 'api_key_example' # str |  (optional)
 
@@ -132,10 +134,11 @@ from petstore_api.rest import ApiException
 from pprint import pprint
 
 # Configure OAuth2 access token for authorization: petstore_auth
-petstore_api.configuration.access_token = 'YOUR_ACCESS_TOKEN'
+configuration = petstore_api.Configuration()
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
 
 # create an instance of the API class
-api_instance = petstore_api.PetApi()
+api_instance = petstore_api.PetApi(petstore_api.ApiClient(configuration))
 status = ['status_example'] # list[str] | Status values that need to be considered for filter
 
 try: 
@@ -183,10 +186,11 @@ from petstore_api.rest import ApiException
 from pprint import pprint
 
 # Configure OAuth2 access token for authorization: petstore_auth
-petstore_api.configuration.access_token = 'YOUR_ACCESS_TOKEN'
+configuration = petstore_api.Configuration()
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
 
 # create an instance of the API class
-api_instance = petstore_api.PetApi()
+api_instance = petstore_api.PetApi(petstore_api.ApiClient(configuration))
 tags = ['tags_example'] # list[str] | Tags to filter by
 
 try: 
@@ -234,12 +238,13 @@ from petstore_api.rest import ApiException
 from pprint import pprint
 
 # Configure API key authorization: api_key
-petstore_api.configuration.api_key['api_key'] = 'YOUR_API_KEY'
+configuration = petstore_api.Configuration()
+configuration.api_key['api_key'] = 'YOUR_API_KEY'
 # Uncomment below to setup prefix (e.g. Bearer) for API key, if needed
-# petstore_api.configuration.api_key_prefix['api_key'] = 'Bearer'
+# configuration.api_key_prefix['api_key'] = 'Bearer'
 
 # create an instance of the API class
-api_instance = petstore_api.PetApi()
+api_instance = petstore_api.PetApi(petstore_api.ApiClient(configuration))
 pet_id = 789 # int | ID of pet to return
 
 try: 
@@ -287,10 +292,11 @@ from petstore_api.rest import ApiException
 from pprint import pprint
 
 # Configure OAuth2 access token for authorization: petstore_auth
-petstore_api.configuration.access_token = 'YOUR_ACCESS_TOKEN'
+configuration = petstore_api.Configuration()
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
 
 # create an instance of the API class
-api_instance = petstore_api.PetApi()
+api_instance = petstore_api.PetApi(petstore_api.ApiClient(configuration))
 body = petstore_api.Pet() # Pet | Pet object that needs to be added to the store
 
 try: 
@@ -337,10 +343,11 @@ from petstore_api.rest import ApiException
 from pprint import pprint
 
 # Configure OAuth2 access token for authorization: petstore_auth
-petstore_api.configuration.access_token = 'YOUR_ACCESS_TOKEN'
+configuration = petstore_api.Configuration()
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
 
 # create an instance of the API class
-api_instance = petstore_api.PetApi()
+api_instance = petstore_api.PetApi(petstore_api.ApiClient(configuration))
 pet_id = 789 # int | ID of pet that needs to be updated
 name = 'name_example' # str | Updated name of the pet (optional)
 status = 'status_example' # str | Updated status of the pet (optional)
@@ -391,10 +398,11 @@ from petstore_api.rest import ApiException
 from pprint import pprint
 
 # Configure OAuth2 access token for authorization: petstore_auth
-petstore_api.configuration.access_token = 'YOUR_ACCESS_TOKEN'
+configuration = petstore_api.Configuration()
+configuration.access_token = 'YOUR_ACCESS_TOKEN'
 
 # create an instance of the API class
-api_instance = petstore_api.PetApi()
+api_instance = petstore_api.PetApi(petstore_api.ApiClient(configuration))
 pet_id = 789 # int | ID of pet to update
 additional_metadata = 'additional_metadata_example' # str | Additional data to pass to server (optional)
 file = '/path/to/file.txt' # file | file to upload (optional)

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

@@ -73,12 +73,13 @@ from petstore_api.rest import ApiException
 from pprint import pprint
 
 # Configure API key authorization: api_key
-petstore_api.configuration.api_key['api_key'] = 'YOUR_API_KEY'
+configuration = petstore_api.Configuration()
+configuration.api_key['api_key'] = 'YOUR_API_KEY'
 # Uncomment below to setup prefix (e.g. Bearer) for API key, if needed
-# petstore_api.configuration.api_key_prefix['api_key'] = 'Bearer'
+# configuration.api_key_prefix['api_key'] = 'Bearer'
 
 # create an instance of the API class
-api_instance = petstore_api.StoreApi()
+api_instance = petstore_api.StoreApi(petstore_api.ApiClient(configuration))
 
 try: 
     # Returns pet inventories by status