diff --git a/modules/openapi-json-schema-generator/src/main/resources/python/configuration.handlebars b/modules/openapi-json-schema-generator/src/main/resources/python/configuration.handlebars
index 8837fa9515d..7e311be3bf4 100644
--- a/modules/openapi-json-schema-generator/src/main/resources/python/configuration.handlebars
+++ b/modules/openapi-json-schema-generator/src/main/resources/python/configuration.handlebars
@@ -37,17 +37,6 @@ class Configuration(object):
       The dict value is an API key prefix when generating the auth data.
     :param username: Username for HTTP basic authentication
     :param password: Password for HTTP basic authentication
-    :param discard_unknown_keys: Boolean value indicating whether to discard
-      unknown properties. A server may send a response that includes additional
-      properties that are not known by the client in the following scenarios:
-      1. The OpenAPI document is incomplete, i.e. it does not match the server
-         implementation.
-      2. The client was generated using an older version of the OpenAPI document
-         and the server has been upgraded since then.
-      If a schema in the OpenAPI document defines the additionalProperties attribute,
-      then all undeclared properties received by the server are injected into the
-      additional properties map. In that case, there are undeclared properties, and
-      nothing to discard.
     :param disabled_client_side_validations (string): Comma-separated list of
       JSON schema validation keywords to disable JSON schema structural validation
       rules. The following keywords may be specified: multipleOf, maximum,
@@ -162,17 +151,29 @@ conf = {{{packageName}}}.Configuration(
 
     _default = None
 
-    def __init__(self, host=None,
-                 api_key=None, api_key_prefix=None,
-                 username=None, password=None,
-                 discard_unknown_keys=False,
-                 disabled_client_side_validations="",
+    def __init__(
+        self,
+        host=None,
+{{#if hasApiKeyMethods}}
+        api_key=None,
+        api_key_prefix=None,
+{{/if}}
+{{#if hasHttpBasicMethods}}
+        username=None,
+        password=None,
+{{/if}}
+        disabled_client_side_validations="",
 {{#if hasHttpSignatureMethods}}
-                 signing_info=None,
+        signing_info=None,
 {{/if}}
-                 server_index=None, server_variables=None,
-                 server_operation_index=None, server_operation_variables=None,
-                 ):
+        server_index=None,
+        server_variables=None,
+        server_operation_index=None,
+        server_operation_variables=None,
+{{#or hasOAuthMethods hasBearerMethods}}
+        access_token=None,
+{{/or}}
+    ):
         """Constructor
         """
         self._base_path = "{{{basePath}}}" if host is None else host
@@ -190,6 +191,7 @@ conf = {{{packageName}}}.Configuration(
         """Temp file folder for downloading files
         """
         # Authentication Settings
+{{#if hasApiKeyMethods}}
         self.api_key = {}
         if api_key:
             self.api_key = api_key
@@ -203,13 +205,15 @@ conf = {{{packageName}}}.Configuration(
         self.refresh_api_key_hook = None
         """function hook to refresh API key if expired
         """
+{{/if}}
+{{#if hasHttpBasicMethods}}
         self.username = username
         """Username for HTTP basic authentication
         """
         self.password = password
         """Password for HTTP basic authentication
         """
-        self.discard_unknown_keys = discard_unknown_keys
+{{/if}}
         self.disabled_client_side_validations = disabled_client_side_validations
 {{#if hasHttpSignatureMethods}}
         if signing_info is not None:
@@ -218,18 +222,11 @@ conf = {{{packageName}}}.Configuration(
         """The HTTP signing configuration
         """
 {{/if}}
-{{#if hasOAuthMethods}}
-        self.access_token = None
-        """access token for OAuth/Bearer
-        """
-{{/if}}
-{{#unless hasOAuthMethods}}
-{{#if hasBearerMethods}}
-        self.access_token = None
+{{#or hasOAuthMethods hasBearerMethods}}
+        self.access_token = access_token
         """access token for OAuth/Bearer
         """
-{{/if}}
-{{/unless}}
+{{/or}}
         self.logger = {}
         """Logging Settings
         """
diff --git a/modules/openapi-json-schema-generator/src/main/resources/python/doc_auth_partial.handlebars b/modules/openapi-json-schema-generator/src/main/resources/python/doc_auth_partial.handlebars
index b16451d867e..f5d61321c35 100644
--- a/modules/openapi-json-schema-generator/src/main/resources/python/doc_auth_partial.handlebars
+++ b/modules/openapi-json-schema-generator/src/main/resources/python/doc_auth_partial.handlebars
@@ -101,9 +101,9 @@ configuration.api_key['{{{name}}}'] = 'YOUR_API_KEY'
 
 # Configure OAuth2 access token for authorization: {{{name}}}
 configuration = {{{packageName}}}.Configuration(
-    host = "{{{basePath}}}"
+    host = "{{{basePath}}}",
+    access_token = 'YOUR_ACCESS_TOKEN'
 )
-configuration.access_token = 'YOUR_ACCESS_TOKEN'
 {{/if}}
 {{/each}}
 {{/if}}
diff --git a/modules/openapi-json-schema-generator/src/test/resources/3_0/python/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml b/modules/openapi-json-schema-generator/src/test/resources/3_0/python/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml
index be50c4b1a58..9b3b54380f8 100644
--- a/modules/openapi-json-schema-generator/src/test/resources/3_0/python/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml
+++ b/modules/openapi-json-schema-generator/src/test/resources/3_0/python/petstore-with-fake-endpoints-models-for-testing-with-http-signature.yaml
@@ -791,13 +791,16 @@ paths:
           description: Required String in group parameters
           required: true
           schema:
-            type: integer
+            type: string
         - name: required_boolean_group
           in: header
           description: Required Boolean in group parameters
           required: true
           schema:
-            type: boolean
+            type: string
+            enum:
+              - true
+              - false
         - name: required_int64_group
           in: query
           description: Required Integer in group parameters
@@ -809,12 +812,15 @@ paths:
           in: query
           description: String in group parameters
           schema:
-            type: integer
+            type: string
         - name: boolean_group
           in: header
           description: Boolean in group parameters
           schema:
-            type: boolean
+            type: string
+            enum:
+              - true
+              - false
         - name: int64_group
           in: query
           description: Integer in group parameters
diff --git a/samples/openapi3/client/3_0_3_unit_test/python/unit_test_api/configuration.py b/samples/openapi3/client/3_0_3_unit_test/python/unit_test_api/configuration.py
index ee4ca7e8424..df35a2dfdc7 100644
--- a/samples/openapi3/client/3_0_3_unit_test/python/unit_test_api/configuration.py
+++ b/samples/openapi3/client/3_0_3_unit_test/python/unit_test_api/configuration.py
@@ -42,17 +42,6 @@ class Configuration(object):
       The dict value is an API key prefix when generating the auth data.
     :param username: Username for HTTP basic authentication
     :param password: Password for HTTP basic authentication
-    :param discard_unknown_keys: Boolean value indicating whether to discard
-      unknown properties. A server may send a response that includes additional
-      properties that are not known by the client in the following scenarios:
-      1. The OpenAPI document is incomplete, i.e. it does not match the server
-         implementation.
-      2. The client was generated using an older version of the OpenAPI document
-         and the server has been upgraded since then.
-      If a schema in the OpenAPI document defines the additionalProperties attribute,
-      then all undeclared properties received by the server are injected into the
-      additional properties map. In that case, there are undeclared properties, and
-      nothing to discard.
     :param disabled_client_side_validations (string): Comma-separated list of
       JSON schema validation keywords to disable JSON schema structural validation
       rules. The following keywords may be specified: multipleOf, maximum,
@@ -80,14 +69,15 @@ class Configuration(object):
 
     _default = None
 
-    def __init__(self, host=None,
-                 api_key=None, api_key_prefix=None,
-                 username=None, password=None,
-                 discard_unknown_keys=False,
-                 disabled_client_side_validations="",
-                 server_index=None, server_variables=None,
-                 server_operation_index=None, server_operation_variables=None,
-                 ):
+    def __init__(
+        self,
+        host=None,
+        disabled_client_side_validations="",
+        server_index=None,
+        server_variables=None,
+        server_operation_index=None,
+        server_operation_variables=None,
+    ):
         """Constructor
         """
         self._base_path = "https://someserver.com/v1" if host is None else host
@@ -105,26 +95,6 @@ def __init__(self, host=None,
         """Temp file folder for downloading files
         """
         # Authentication Settings
-        self.api_key = {}
-        if api_key:
-            self.api_key = api_key
-        """dict to store API key(s)
-        """
-        self.api_key_prefix = {}
-        if api_key_prefix:
-            self.api_key_prefix = api_key_prefix
-        """dict to store API prefix (e.g. Bearer)
-        """
-        self.refresh_api_key_hook = None
-        """function hook to refresh API key if expired
-        """
-        self.username = username
-        """Username for HTTP basic authentication
-        """
-        self.password = password
-        """Password for HTTP basic authentication
-        """
-        self.discard_unknown_keys = discard_unknown_keys
         self.disabled_client_side_validations = disabled_client_side_validations
         self.logger = {}
         """Logging Settings
diff --git a/samples/openapi3/client/features/nonCompliantUseDiscriminatorIfCompositionFails/python/this_package/configuration.py b/samples/openapi3/client/features/nonCompliantUseDiscriminatorIfCompositionFails/python/this_package/configuration.py
index 641cf246141..32cd774ed63 100644
--- a/samples/openapi3/client/features/nonCompliantUseDiscriminatorIfCompositionFails/python/this_package/configuration.py
+++ b/samples/openapi3/client/features/nonCompliantUseDiscriminatorIfCompositionFails/python/this_package/configuration.py
@@ -42,17 +42,6 @@ class Configuration(object):
       The dict value is an API key prefix when generating the auth data.
     :param username: Username for HTTP basic authentication
     :param password: Password for HTTP basic authentication
-    :param discard_unknown_keys: Boolean value indicating whether to discard
-      unknown properties. A server may send a response that includes additional
-      properties that are not known by the client in the following scenarios:
-      1. The OpenAPI document is incomplete, i.e. it does not match the server
-         implementation.
-      2. The client was generated using an older version of the OpenAPI document
-         and the server has been upgraded since then.
-      If a schema in the OpenAPI document defines the additionalProperties attribute,
-      then all undeclared properties received by the server are injected into the
-      additional properties map. In that case, there are undeclared properties, and
-      nothing to discard.
     :param disabled_client_side_validations (string): Comma-separated list of
       JSON schema validation keywords to disable JSON schema structural validation
       rules. The following keywords may be specified: multipleOf, maximum,
@@ -80,14 +69,15 @@ class Configuration(object):
 
     _default = None
 
-    def __init__(self, host=None,
-                 api_key=None, api_key_prefix=None,
-                 username=None, password=None,
-                 discard_unknown_keys=False,
-                 disabled_client_side_validations="",
-                 server_index=None, server_variables=None,
-                 server_operation_index=None, server_operation_variables=None,
-                 ):
+    def __init__(
+        self,
+        host=None,
+        disabled_client_side_validations="",
+        server_index=None,
+        server_variables=None,
+        server_operation_index=None,
+        server_operation_variables=None,
+    ):
         """Constructor
         """
         self._base_path = "http://localhost:3000" if host is None else host
@@ -105,26 +95,6 @@ def __init__(self, host=None,
         """Temp file folder for downloading files
         """
         # Authentication Settings
-        self.api_key = {}
-        if api_key:
-            self.api_key = api_key
-        """dict to store API key(s)
-        """
-        self.api_key_prefix = {}
-        if api_key_prefix:
-            self.api_key_prefix = api_key_prefix
-        """dict to store API prefix (e.g. Bearer)
-        """
-        self.refresh_api_key_hook = None
-        """function hook to refresh API key if expired
-        """
-        self.username = username
-        """Username for HTTP basic authentication
-        """
-        self.password = password
-        """Password for HTTP basic authentication
-        """
-        self.discard_unknown_keys = discard_unknown_keys
         self.disabled_client_side_validations = disabled_client_side_validations
         self.logger = {}
         """Logging Settings
diff --git a/samples/openapi3/client/petstore/python/docs/apis/tags/FakeApi.md b/samples/openapi3/client/petstore/python/docs/apis/tags/FakeApi.md
index e8690102866..e990e97345e 100644
--- a/samples/openapi3/client/petstore/python/docs/apis/tags/FakeApi.md
+++ b/samples/openapi3/client/petstore/python/docs/apis/tags/FakeApi.md
@@ -1328,11 +1328,11 @@ with petstore_api.ApiClient(configuration) as api_client:
 
     # example passing only required values which don't have defaults set
     query_params = {
-        'required_string_group': 1,
+        'required_string_group': "required_string_group_example",
         'required_int64_group': 1,
     }
     header_params = {
-        'required_boolean_group': True,
+        'required_boolean_group': "true",
     }
     try:
         # Fake endpoint to test group parameters (optional)
@@ -1345,14 +1345,14 @@ with petstore_api.ApiClient(configuration) as api_client:
 
     # example passing only optional values
     query_params = {
-        'required_string_group': 1,
+        'required_string_group': "required_string_group_example",
         'required_int64_group': 1,
-        'string_group': 1,
+        'string_group': "string_group_example",
         'int64_group': 1,
     }
     header_params = {
-        'required_boolean_group': True,
-        'boolean_group': True,
+        'required_boolean_group': "true",
+        'boolean_group': "true",
     }
     try:
         # Fake endpoint to test group parameters (optional)
@@ -1389,7 +1389,7 @@ int64_group | Int64GroupSchema | | optional
 ## Model Type Info
 Input Type | Accessed Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-decimal.Decimal, int,  | decimal.Decimal,  |  | 
+str,  | str,  |  | 
 
 # RequiredInt64GroupSchema
 
@@ -1403,7 +1403,7 @@ decimal.Decimal, int,  | decimal.Decimal,  |  | value must be a 64 bit integer
 ## Model Type Info
 Input Type | Accessed Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-decimal.Decimal, int,  | decimal.Decimal,  |  | 
+str,  | str,  |  | 
 
 # Int64GroupSchema
 
@@ -1425,14 +1425,14 @@ boolean_group | BooleanGroupSchema | | optional
 ## Model Type Info
 Input Type | Accessed Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-bool,  | BoolClass,  |  | 
+str,  | str,  |  | must be one of ["true", "false", ] 
 
 # BooleanGroupSchema
 
 ## Model Type Info
 Input Type | Accessed Type | Description | Notes
 ------------ | ------------- | ------------- | -------------
-bool,  | BoolClass,  |  | 
+str,  | str,  |  | must be one of ["true", "false", ] 
 
 ### Return Types, Responses
 
diff --git a/samples/openapi3/client/petstore/python/docs/apis/tags/PetApi.md b/samples/openapi3/client/petstore/python/docs/apis/tags/PetApi.md
index a295a0d499b..28787e08d35 100644
--- a/samples/openapi3/client/petstore/python/docs/apis/tags/PetApi.md
+++ b/samples/openapi3/client/petstore/python/docs/apis/tags/PetApi.md
@@ -104,9 +104,9 @@ configuration = petstore_api.Configuration(
 
 # Configure OAuth2 access token for authorization: petstore_auth
 configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
+    host = "http://petstore.swagger.io:80/v2",
+    access_token = 'YOUR_ACCESS_TOKEN'
 )
-configuration.access_token = 'YOUR_ACCESS_TOKEN'
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient(configuration) as api_client:
     # Create an instance of the API class
@@ -218,9 +218,9 @@ configuration = petstore_api.Configuration(
 
 # Configure OAuth2 access token for authorization: petstore_auth
 configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
+    host = "http://petstore.swagger.io:80/v2",
+    access_token = 'YOUR_ACCESS_TOKEN'
 )
-configuration.access_token = 'YOUR_ACCESS_TOKEN'
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient(configuration) as api_client:
     # Create an instance of the API class
@@ -404,9 +404,9 @@ configuration = petstore_api.Configuration(
 
 # Configure OAuth2 access token for authorization: petstore_auth
 configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
+    host = "http://petstore.swagger.io:80/v2",
+    access_token = 'YOUR_ACCESS_TOKEN'
 )
-configuration.access_token = 'YOUR_ACCESS_TOKEN'
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient(configuration) as api_client:
     # Create an instance of the API class
@@ -598,9 +598,9 @@ configuration = petstore_api.Configuration(
 
 # Configure OAuth2 access token for authorization: petstore_auth
 configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
+    host = "http://petstore.swagger.io:80/v2",
+    access_token = 'YOUR_ACCESS_TOKEN'
 )
-configuration.access_token = 'YOUR_ACCESS_TOKEN'
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient(configuration) as api_client:
     # Create an instance of the API class
@@ -912,9 +912,9 @@ configuration = petstore_api.Configuration(
 
 # Configure OAuth2 access token for authorization: petstore_auth
 configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
+    host = "http://petstore.swagger.io:80/v2",
+    access_token = 'YOUR_ACCESS_TOKEN'
 )
-configuration.access_token = 'YOUR_ACCESS_TOKEN'
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient(configuration) as api_client:
     # Create an instance of the API class
@@ -1034,9 +1034,9 @@ configuration = petstore_api.Configuration(
 
 # Configure OAuth2 access token for authorization: petstore_auth
 configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
+    host = "http://petstore.swagger.io:80/v2",
+    access_token = 'YOUR_ACCESS_TOKEN'
 )
-configuration.access_token = 'YOUR_ACCESS_TOKEN'
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient(configuration) as api_client:
     # Create an instance of the API class
@@ -1159,9 +1159,9 @@ configuration = petstore_api.Configuration(
 
 # Configure OAuth2 access token for authorization: petstore_auth
 configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
+    host = "http://petstore.swagger.io:80/v2",
+    access_token = 'YOUR_ACCESS_TOKEN'
 )
-configuration.access_token = 'YOUR_ACCESS_TOKEN'
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient(configuration) as api_client:
     # Create an instance of the API class
@@ -1293,9 +1293,9 @@ configuration = petstore_api.Configuration(
 
 # Configure OAuth2 access token for authorization: petstore_auth
 configuration = petstore_api.Configuration(
-    host = "http://petstore.swagger.io:80/v2"
+    host = "http://petstore.swagger.io:80/v2",
+    access_token = 'YOUR_ACCESS_TOKEN'
 )
-configuration.access_token = 'YOUR_ACCESS_TOKEN'
 # Enter a context with an instance of the API client
 with petstore_api.ApiClient(configuration) as api_client:
     # Create an instance of the API class
diff --git a/samples/openapi3/client/petstore/python/petstore_api/configuration.py b/samples/openapi3/client/petstore/python/petstore_api/configuration.py
index f7c2a3ff91e..3e09af0b250 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/configuration.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/configuration.py
@@ -42,17 +42,6 @@ class Configuration(object):
       The dict value is an API key prefix when generating the auth data.
     :param username: Username for HTTP basic authentication
     :param password: Password for HTTP basic authentication
-    :param discard_unknown_keys: Boolean value indicating whether to discard
-      unknown properties. A server may send a response that includes additional
-      properties that are not known by the client in the following scenarios:
-      1. The OpenAPI document is incomplete, i.e. it does not match the server
-         implementation.
-      2. The client was generated using an older version of the OpenAPI document
-         and the server has been upgraded since then.
-      If a schema in the OpenAPI document defines the additionalProperties attribute,
-      then all undeclared properties received by the server are injected into the
-      additional properties map. In that case, there are undeclared properties, and
-      nothing to discard.
     :param disabled_client_side_validations (string): Comma-separated list of
       JSON schema validation keywords to disable JSON schema structural validation
       rules. The following keywords may be specified: multipleOf, maximum,
@@ -157,15 +146,21 @@ class Configuration(object):
 
     _default = None
 
-    def __init__(self, host=None,
-                 api_key=None, api_key_prefix=None,
-                 username=None, password=None,
-                 discard_unknown_keys=False,
-                 disabled_client_side_validations="",
-                 signing_info=None,
-                 server_index=None, server_variables=None,
-                 server_operation_index=None, server_operation_variables=None,
-                 ):
+    def __init__(
+        self,
+        host=None,
+        api_key=None,
+        api_key_prefix=None,
+        username=None,
+        password=None,
+        disabled_client_side_validations="",
+        signing_info=None,
+        server_index=None,
+        server_variables=None,
+        server_operation_index=None,
+        server_operation_variables=None,
+        access_token=None,
+    ):
         """Constructor
         """
         self._base_path = "http://petstore.swagger.io:80/v2" if host is None else host
@@ -202,14 +197,13 @@ def __init__(self, host=None,
         self.password = password
         """Password for HTTP basic authentication
         """
-        self.discard_unknown_keys = discard_unknown_keys
         self.disabled_client_side_validations = disabled_client_side_validations
         if signing_info is not None:
             signing_info.host = host
         self.signing_info = signing_info
         """The HTTP signing configuration
         """
-        self.access_token = None
+        self.access_token = access_token
         """access token for OAuth/Bearer
         """
         self.logger = {}
diff --git a/samples/openapi3/client/petstore/python/petstore_api/paths/fake/delete.py b/samples/openapi3/client/petstore/python/petstore_api/paths/fake/delete.py
index 9803516eec2..7afe98ac646 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/paths/fake/delete.py
+++ b/samples/openapi3/client/petstore/python/petstore_api/paths/fake/delete.py
@@ -28,21 +28,21 @@
 from . import path
 
 # Query params
-RequiredStringGroupSchema = schemas.IntSchema
+RequiredStringGroupSchema = schemas.StrSchema
 RequiredInt64GroupSchema = schemas.Int64Schema
-StringGroupSchema = schemas.IntSchema
+StringGroupSchema = schemas.StrSchema
 Int64GroupSchema = schemas.Int64Schema
 RequestRequiredQueryParams = typing_extensions.TypedDict(
     'RequestRequiredQueryParams',
     {
-        'required_string_group': typing.Union[RequiredStringGroupSchema, decimal.Decimal, int, ],
+        'required_string_group': typing.Union[RequiredStringGroupSchema, str, ],
         'required_int64_group': typing.Union[RequiredInt64GroupSchema, decimal.Decimal, int, ],
     }
 )
 RequestOptionalQueryParams = typing_extensions.TypedDict(
     'RequestOptionalQueryParams',
     {
-        'string_group': typing.Union[StringGroupSchema, decimal.Decimal, int, ],
+        'string_group': typing.Union[StringGroupSchema, str, ],
         'int64_group': typing.Union[Int64GroupSchema, decimal.Decimal, int, ],
     },
     total=False
@@ -80,18 +80,58 @@ class RequestQueryParams(RequestRequiredQueryParams, RequestOptionalQueryParams)
     explode=True,
 )
 # Header params
-RequiredBooleanGroupSchema = schemas.BoolSchema
-BooleanGroupSchema = schemas.BoolSchema
+
+
+class RequiredBooleanGroupSchema(
+    schemas.EnumBase,
+    schemas.StrSchema
+):
+
+
+    class MetaOapg:
+        enum_value_to_name = {
+            "true": "TRUE",
+            "false": "FALSE",
+        }
+    
+    @schemas.classproperty
+    def TRUE(cls):
+        return cls("true")
+    
+    @schemas.classproperty
+    def FALSE(cls):
+        return cls("false")
+
+
+class BooleanGroupSchema(
+    schemas.EnumBase,
+    schemas.StrSchema
+):
+
+
+    class MetaOapg:
+        enum_value_to_name = {
+            "true": "TRUE",
+            "false": "FALSE",
+        }
+    
+    @schemas.classproperty
+    def TRUE(cls):
+        return cls("true")
+    
+    @schemas.classproperty
+    def FALSE(cls):
+        return cls("false")
 RequestRequiredHeaderParams = typing_extensions.TypedDict(
     'RequestRequiredHeaderParams',
     {
-        'required_boolean_group': typing.Union[RequiredBooleanGroupSchema, bool, ],
+        'required_boolean_group': typing.Union[RequiredBooleanGroupSchema, str, ],
     }
 )
 RequestOptionalHeaderParams = typing_extensions.TypedDict(
     'RequestOptionalHeaderParams',
     {
-        'boolean_group': typing.Union[BooleanGroupSchema, bool, ],
+        'boolean_group': typing.Union[BooleanGroupSchema, str, ],
     },
     total=False
 )
diff --git a/samples/openapi3/client/petstore/python/petstore_api/paths/fake/delete.pyi b/samples/openapi3/client/petstore/python/petstore_api/paths/fake/delete.pyi
index 1bb21445f6f..d074fbd1071 100644
--- a/samples/openapi3/client/petstore/python/petstore_api/paths/fake/delete.pyi
+++ b/samples/openapi3/client/petstore/python/petstore_api/paths/fake/delete.pyi
@@ -26,21 +26,21 @@ import frozendict  # noqa: F401
 from petstore_api import schemas  # noqa: F401
 
 # Query params
-RequiredStringGroupSchema = schemas.IntSchema
+RequiredStringGroupSchema = schemas.StrSchema
 RequiredInt64GroupSchema = schemas.Int64Schema
-StringGroupSchema = schemas.IntSchema
+StringGroupSchema = schemas.StrSchema
 Int64GroupSchema = schemas.Int64Schema
 RequestRequiredQueryParams = typing_extensions.TypedDict(
     'RequestRequiredQueryParams',
     {
-        'required_string_group': typing.Union[RequiredStringGroupSchema, decimal.Decimal, int, ],
+        'required_string_group': typing.Union[RequiredStringGroupSchema, str, ],
         'required_int64_group': typing.Union[RequiredInt64GroupSchema, decimal.Decimal, int, ],
     }
 )
 RequestOptionalQueryParams = typing_extensions.TypedDict(
     'RequestOptionalQueryParams',
     {
-        'string_group': typing.Union[StringGroupSchema, decimal.Decimal, int, ],
+        'string_group': typing.Union[StringGroupSchema, str, ],
         'int64_group': typing.Union[Int64GroupSchema, decimal.Decimal, int, ],
     },
     total=False
@@ -78,18 +78,44 @@ request_query_int64_group = api_client.QueryParameter(
     explode=True,
 )
 # Header params
-RequiredBooleanGroupSchema = schemas.BoolSchema
-BooleanGroupSchema = schemas.BoolSchema
+
+
+class RequiredBooleanGroupSchema(
+    schemas.EnumBase,
+    schemas.StrSchema
+):
+    
+    @schemas.classproperty
+    def TRUE(cls):
+        return cls("true")
+    
+    @schemas.classproperty
+    def FALSE(cls):
+        return cls("false")
+
+
+class BooleanGroupSchema(
+    schemas.EnumBase,
+    schemas.StrSchema
+):
+    
+    @schemas.classproperty
+    def TRUE(cls):
+        return cls("true")
+    
+    @schemas.classproperty
+    def FALSE(cls):
+        return cls("false")
 RequestRequiredHeaderParams = typing_extensions.TypedDict(
     'RequestRequiredHeaderParams',
     {
-        'required_boolean_group': typing.Union[RequiredBooleanGroupSchema, bool, ],
+        'required_boolean_group': typing.Union[RequiredBooleanGroupSchema, str, ],
     }
 )
 RequestOptionalHeaderParams = typing_extensions.TypedDict(
     'RequestOptionalHeaderParams',
     {
-        'boolean_group': typing.Union[BooleanGroupSchema, bool, ],
+        'boolean_group': typing.Union[BooleanGroupSchema, str, ],
     },
     total=False
 )
diff --git a/samples/openapi3/client/petstore/python/tests_manual/test_paths/test_fake/test_delete.py b/samples/openapi3/client/petstore/python/tests_manual/test_paths/test_fake/test_delete.py
new file mode 100644
index 00000000000..1a082a9b663
--- /dev/null
+++ b/samples/openapi3/client/petstore/python/tests_manual/test_paths/test_fake/test_delete.py
@@ -0,0 +1,61 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+from unittest.mock import patch
+
+import urllib3
+
+from petstore_api.paths.fake import delete
+from petstore_api import configuration, schemas, api_client
+
+from ... import ApiTestMixin
+
+
+class TestFake(ApiTestMixin, unittest.TestCase):
+    used_configuration = configuration.Configuration(
+        access_token='someBearerToken'
+    )
+    used_api_client = api_client.ApiClient(
+        configuration=used_configuration
+    )
+    api = delete.ApiFordelete(api_client=used_api_client)
+
+    @patch.object(urllib3.PoolManager, 'request')
+    def test_delete_uses_http_bearer_auth(self, mock_request):
+        mock_request.return_value = self.response(b'')
+
+        query_params = {
+            'required_string_group': 'a',
+            'required_int64_group': 1,
+        }
+        header_params = {
+            'required_boolean_group': 'true'
+        }
+        api_response = self.api.delete(query_params=query_params, header_params=header_params)
+        self.assert_pool_manager_request_called_with(
+            mock_request,
+            f'http://petstore.swagger.io:80/v2/fake?required_string_group=a&required_int64_group=1',
+            body=None,
+            method='DELETE',
+            content_type=None,
+            accept_content_type=None,
+            headers={
+                'Authorization': 'Bearer someBearerToken',
+                'required_boolean_group': 'true'
+            }
+        )
+
+        assert isinstance(api_response.response, urllib3.HTTPResponse)
+        assert isinstance(api_response.body, schemas.Unset)
+        assert isinstance(api_response.headers, schemas.Unset)
+        assert api_response.response.status == 200
+
+
+if __name__ == '__main__':
+    unittest.main()
diff --git a/samples/openapi3/client/petstore/python/tests_manual/test_paths/test_fake/test_post.py b/samples/openapi3/client/petstore/python/tests_manual/test_paths/test_fake/test_post.py
new file mode 100644
index 00000000000..290c8fc22f9
--- /dev/null
+++ b/samples/openapi3/client/petstore/python/tests_manual/test_paths/test_fake/test_post.py
@@ -0,0 +1,52 @@
+# coding: utf-8
+
+"""
+
+
+    Generated by: https://openapi-generator.tech
+"""
+
+import unittest
+from unittest.mock import patch
+
+import urllib3
+
+from petstore_api.paths.fake import post
+from petstore_api import configuration, schemas, api_client
+
+from ... import ApiTestMixin
+
+
+class TestFake(ApiTestMixin, unittest.TestCase):
+    used_configuration = configuration.Configuration(
+        username='demo',
+        password='p@55w0rd'
+    )
+    used_api_client = api_client.ApiClient(
+        configuration=used_configuration
+    )
+    api = post.ApiForpost(api_client=used_api_client)
+
+    @patch.object(urllib3.PoolManager, 'request')
+    def test_post_uses_http_basic_auth(self, mock_request):
+        mock_request.return_value = self.response(b'')
+
+        api_response = self.api.post()
+        self.assert_pool_manager_request_called_with(
+            mock_request,
+            f'http://petstore.swagger.io:80/v2/fake',
+            body=None,
+            method='POST',
+            content_type=None,
+            accept_content_type=None,
+            headers={'Authorization': 'Basic ZGVtbzpwQDU1dzByZA=='}
+        )
+
+        assert isinstance(api_response.response, urllib3.HTTPResponse)
+        assert isinstance(api_response.body, schemas.Unset)
+        assert isinstance(api_response.headers, schemas.Unset)
+        assert api_response.response.status == 200
+
+
+if __name__ == '__main__':
+    unittest.main()