[python-client] Modify python templates to resolve linting errors (#6839)

The linting results for the generated samples are as follows
where the first number is the BEFORE and the second is AFTER.

pyclient            7714 vs. 120
pyclient3           7717 vs. 120
pyclient3-asyncio   7584 vs. 120
pyclient-tornado    7633 vs. 120
pyclient3-tornado   7633 vs. 120

For the complete details please see the following gist.
https://gist.github.com/kenjones-cisco/2eb69a7e8db75e9fd53789f01570d9f2

Enforces linting for python clients by running flake8 for the generated
python client.

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

@@ -4,7 +4,7 @@
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
 **map_property** | **dict(str, str)** |  | [optional] 
-**map_of_map_property** | [**dict(str, dict(str, str))**](dict.md) |  | [optional] 
+**map_of_map_property** | **dict(str, dict(str, str))** |  | [optional] 
 
 [[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
 

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

@@ -14,7 +14,7 @@ To test special tags
 
 To test special tags
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -26,7 +26,7 @@ from pprint import pprint
 api_instance = petstore_api.AnotherFakeApi()
 body = petstore_api.Client() # Client | client model
 
-try: 
+try:
     # To test special tags
     api_response = api_instance.test_special_tags(body)
     pprint(api_response)

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

@@ -22,7 +22,7 @@ Method | HTTP request | Description
 
 Test serialization of outer boolean types
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -34,7 +34,7 @@ from pprint import pprint
 api_instance = petstore_api.FakeApi()
 body = petstore_api.OuterBoolean() # OuterBoolean | Input boolean as post body (optional)
 
-try: 
+try:
     api_response = api_instance.fake_outer_boolean_serialize(body=body)
     pprint(api_response)
 except ApiException as e:
@@ -69,7 +69,7 @@ No authorization required
 
 Test serialization of object with outer number type
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -81,7 +81,7 @@ from pprint import pprint
 api_instance = petstore_api.FakeApi()
 body = petstore_api.OuterComposite() # OuterComposite | Input composite as post body (optional)
 
-try: 
+try:
     api_response = api_instance.fake_outer_composite_serialize(body=body)
     pprint(api_response)
 except ApiException as e:
@@ -116,7 +116,7 @@ No authorization required
 
 Test serialization of outer number types
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -128,7 +128,7 @@ from pprint import pprint
 api_instance = petstore_api.FakeApi()
 body = petstore_api.OuterNumber() # OuterNumber | Input number as post body (optional)
 
-try: 
+try:
     api_response = api_instance.fake_outer_number_serialize(body=body)
     pprint(api_response)
 except ApiException as e:
@@ -163,7 +163,7 @@ No authorization required
 
 Test serialization of outer string types
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -175,7 +175,7 @@ from pprint import pprint
 api_instance = petstore_api.FakeApi()
 body = petstore_api.OuterString() # OuterString | Input string as post body (optional)
 
-try: 
+try:
     api_response = api_instance.fake_outer_string_serialize(body=body)
     pprint(api_response)
 except ApiException as e:
@@ -210,7 +210,7 @@ To test \"client\" model
 
 To test \"client\" model
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -222,7 +222,7 @@ from pprint import pprint
 api_instance = petstore_api.FakeApi()
 body = petstore_api.Client() # Client | client model
 
-try: 
+try:
     # To test \"client\" model
     api_response = api_instance.test_client_model(body)
     pprint(api_response)
@@ -258,7 +258,7 @@ Fake endpoint for testing various parameters 假端點 偽のエンドポイン
 
 Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -288,7 +288,7 @@ date_time = '2013-10-20T19:20:30+01:00' # datetime | None (optional)
 password = 'password_example' # str | None (optional)
 param_callback = 'param_callback_example' # str | None (optional)
 
-try: 
+try:
     # Fake endpoint for testing various parameters 假端點 偽のエンドポイント 가짜 엔드 포인트 
     api_instance.test_endpoint_parameters(number, double, pattern_without_delimiter, byte, integer=integer, int32=int32, int64=int64, float=float, string=string, binary=binary, date=date, date_time=date_time, password=password, param_callback=param_callback)
 except ApiException as e:
@@ -336,7 +336,7 @@ To test enum parameters
 
 To test enum parameters
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -355,7 +355,7 @@ enum_query_string = '-efg' # str | Query parameter enum test (string) (optional)
 enum_query_integer = 56 # int | Query parameter enum test (double) (optional)
 enum_query_double = 1.2 # float | Query parameter enum test (double) (optional)
 
-try: 
+try:
     # To test enum parameters
     api_instance.test_enum_parameters(enum_form_string_array=enum_form_string_array, enum_form_string=enum_form_string, enum_header_string_array=enum_header_string_array, enum_header_string=enum_header_string, enum_query_string_array=enum_query_string_array, enum_query_string=enum_query_string, enum_query_integer=enum_query_integer, enum_query_double=enum_query_double)
 except ApiException as e:
@@ -397,7 +397,7 @@ test inline additionalProperties
 
 
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -409,7 +409,7 @@ from pprint import pprint
 api_instance = petstore_api.FakeApi()
 param = NULL # object | request body
 
-try: 
+try:
     # test inline additionalProperties
     api_instance.test_inline_additional_properties(param)
 except ApiException as e:
@@ -444,7 +444,7 @@ test json serialization of form data
 
 
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -457,7 +457,7 @@ api_instance = petstore_api.FakeApi()
 param = 'param_example' # str | field1
 param2 = 'param2_example' # str | field2
 
-try: 
+try:
     # test json serialization of form data
     api_instance.test_json_form_data(param, param2)
 except ApiException as e:

samples/client/petstore/python/docs/FakeClassnameTags123Api.md

@@ -12,7 +12,7 @@ Method | HTTP request | Description
 
 To test class name in snake case
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -30,7 +30,7 @@ configuration.api_key['api_key_query'] = 'YOUR_API_KEY'
 api_instance = petstore_api.FakeClassnameTags123Api(petstore_api.ApiClient(configuration))
 body = petstore_api.Client() # Client | client model
 
-try: 
+try:
     # To test class name in snake case
     api_response = api_instance.test_classname(body)
     pprint(api_response)

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

@@ -3,7 +3,7 @@
 ## Properties
 Name | Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-**map_map_of_string** | [**dict(str, dict(str, str))**](dict.md) |  | [optional] 
+**map_map_of_string** | **dict(str, dict(str, str))** |  | [optional] 
 **map_of_enum_string** | **dict(str, str)** |  | [optional] 
 
 [[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)

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

@@ -21,7 +21,7 @@ Add a new pet to the store
 
 
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -37,7 +37,7 @@ configuration.access_token = 'YOUR_ACCESS_TOKEN'
 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: 
+try:
     # Add a new pet to the store
     api_instance.add_pet(body)
 except ApiException as e:
@@ -72,7 +72,7 @@ Deletes a pet
 
 
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -89,7 +89,7 @@ api_instance = petstore_api.PetApi(petstore_api.ApiClient(configuration))
 pet_id = 789 # int | Pet id to delete
 api_key = 'api_key_example' # str |  (optional)
 
-try: 
+try:
     # Deletes a pet
     api_instance.delete_pet(pet_id, api_key=api_key)
 except ApiException as e:
@@ -125,7 +125,7 @@ Finds Pets by status
 
 Multiple status values can be provided with comma separated strings
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -141,7 +141,7 @@ configuration.access_token = 'YOUR_ACCESS_TOKEN'
 api_instance = petstore_api.PetApi(petstore_api.ApiClient(configuration))
 status = ['status_example'] # list[str] | Status values that need to be considered for filter
 
-try: 
+try:
     # Finds Pets by status
     api_response = api_instance.find_pets_by_status(status)
     pprint(api_response)
@@ -177,7 +177,7 @@ Finds Pets by tags
 
 Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -193,7 +193,7 @@ configuration.access_token = 'YOUR_ACCESS_TOKEN'
 api_instance = petstore_api.PetApi(petstore_api.ApiClient(configuration))
 tags = ['tags_example'] # list[str] | Tags to filter by
 
-try: 
+try:
     # Finds Pets by tags
     api_response = api_instance.find_pets_by_tags(tags)
     pprint(api_response)
@@ -229,7 +229,7 @@ Find pet by ID
 
 Returns a single pet
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -247,7 +247,7 @@ configuration.api_key['api_key'] = 'YOUR_API_KEY'
 api_instance = petstore_api.PetApi(petstore_api.ApiClient(configuration))
 pet_id = 789 # int | ID of pet to return
 
-try: 
+try:
     # Find pet by ID
     api_response = api_instance.get_pet_by_id(pet_id)
     pprint(api_response)
@@ -283,7 +283,7 @@ Update an existing pet
 
 
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -299,7 +299,7 @@ configuration.access_token = 'YOUR_ACCESS_TOKEN'
 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: 
+try:
     # Update an existing pet
     api_instance.update_pet(body)
 except ApiException as e:
@@ -334,7 +334,7 @@ Updates a pet in the store with form data
 
 
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -352,7 +352,7 @@ 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)
 
-try: 
+try:
     # Updates a pet in the store with form data
     api_instance.update_pet_with_form(pet_id, name=name, status=status)
 except ApiException as e:
@@ -389,7 +389,7 @@ uploads an image
 
 
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -407,7 +407,7 @@ 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)
 
-try: 
+try:
     # uploads an image
     api_response = api_instance.upload_file(pet_id, additional_metadata=additional_metadata, file=file)
     pprint(api_response)

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

@@ -17,7 +17,7 @@ Delete purchase order by ID
 
 For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -29,7 +29,7 @@ from pprint import pprint
 api_instance = petstore_api.StoreApi()
 order_id = 'order_id_example' # str | ID of the order that needs to be deleted
 
-try: 
+try:
     # Delete purchase order by ID
     api_instance.delete_order(order_id)
 except ApiException as e:
@@ -64,7 +64,7 @@ Returns pet inventories by status
 
 Returns a map of status codes to quantities
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -81,7 +81,7 @@ configuration.api_key['api_key'] = 'YOUR_API_KEY'
 # create an instance of the API class
 api_instance = petstore_api.StoreApi(petstore_api.ApiClient(configuration))
 
-try: 
+try:
     # Returns pet inventories by status
     api_response = api_instance.get_inventory()
     pprint(api_response)
@@ -114,7 +114,7 @@ Find purchase order by ID
 
 For valid response try integer IDs with value <= 5 or > 10. Other values will generated exceptions
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -126,7 +126,7 @@ from pprint import pprint
 api_instance = petstore_api.StoreApi()
 order_id = 789 # int | ID of pet that needs to be fetched
 
-try: 
+try:
     # Find purchase order by ID
     api_response = api_instance.get_order_by_id(order_id)
     pprint(api_response)
@@ -162,7 +162,7 @@ Place an order for a pet
 
 
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -174,7 +174,7 @@ from pprint import pprint
 api_instance = petstore_api.StoreApi()
 body = petstore_api.Order() # Order | order placed for purchasing the pet
 
-try: 
+try:
     # Place an order for a pet
     api_response = api_instance.place_order(body)
     pprint(api_response)

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

@@ -21,7 +21,7 @@ Create user
 
 This can only be done by the logged in user.
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -33,7 +33,7 @@ from pprint import pprint
 api_instance = petstore_api.UserApi()
 body = petstore_api.User() # User | Created user object
 
-try: 
+try:
     # Create user
     api_instance.create_user(body)
 except ApiException as e:
@@ -68,7 +68,7 @@ Creates list of users with given input array
 
 
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -80,7 +80,7 @@ from pprint import pprint
 api_instance = petstore_api.UserApi()
 body = [petstore_api.User()] # list[User] | List of user object
 
-try: 
+try:
     # Creates list of users with given input array
     api_instance.create_users_with_array_input(body)
 except ApiException as e:
@@ -115,7 +115,7 @@ Creates list of users with given input array
 
 
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -127,7 +127,7 @@ from pprint import pprint
 api_instance = petstore_api.UserApi()
 body = [petstore_api.User()] # list[User] | List of user object
 
-try: 
+try:
     # Creates list of users with given input array
     api_instance.create_users_with_list_input(body)
 except ApiException as e:
@@ -162,7 +162,7 @@ Delete user
 
 This can only be done by the logged in user.
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -174,7 +174,7 @@ from pprint import pprint
 api_instance = petstore_api.UserApi()
 username = 'username_example' # str | The name that needs to be deleted
 
-try: 
+try:
     # Delete user
     api_instance.delete_user(username)
 except ApiException as e:
@@ -209,7 +209,7 @@ Get user by user name
 
 
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -221,7 +221,7 @@ from pprint import pprint
 api_instance = petstore_api.UserApi()
 username = 'username_example' # str | The name that needs to be fetched. Use user1 for testing. 
 
-try: 
+try:
     # Get user by user name
     api_response = api_instance.get_user_by_name(username)
     pprint(api_response)
@@ -257,7 +257,7 @@ Logs user into the system
 
 
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -270,7 +270,7 @@ api_instance = petstore_api.UserApi()
 username = 'username_example' # str | The user name for login
 password = 'password_example' # str | The password for login in clear text
 
-try: 
+try:
     # Logs user into the system
     api_response = api_instance.login_user(username, password)
     pprint(api_response)
@@ -307,7 +307,7 @@ Logs out current logged in user session
 
 
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -318,7 +318,7 @@ from pprint import pprint
 # create an instance of the API class
 api_instance = petstore_api.UserApi()
 
-try: 
+try:
     # Logs out current logged in user session
     api_instance.logout_user()
 except ApiException as e:
@@ -350,7 +350,7 @@ Updated user
 
 This can only be done by the logged in user.
 
-### Example 
+### Example
 ```python
 from __future__ import print_function
 import time
@@ -363,7 +363,7 @@ api_instance = petstore_api.UserApi()
 username = 'username_example' # str | name that need to be deleted
 body = petstore_api.User() # User | Updated user object
 
-try: 
+try:
     # Updated user
     api_instance.update_user(username, body)
 except ApiException as e: