v3 code reduction w/ shared_imports (#168)

* Adds typing_imports

* Adds typing_imports for header and parameter

* Updates request body imports

* Adds response_imports

* Adds schema_imports

* Adds security_scheme_imports

* Adds server imports

* Adds operation_imports

* typing_imports -> header_imports

* Sample regen

modules/openapi-json-schema-generator/src/main/java/org/openapijsonschematools/codegen/languages/PythonClientCodegen.java

@@ -704,6 +704,15 @@ public void processOpts() {
 
         supportingFiles.add(new SupportingFile("exceptions.hbs", packagePath(), "exceptions.py"));
 
+        // shared_imports
+        supportingFiles.add(new SupportingFile("__init__.hbs", packagePath() + File.separator + "shared_imports", "__init__.py"));
+        supportingFiles.add(new SupportingFile("shared_imports/header_imports.hbs", packagePath() + File.separator + "shared_imports", "header_imports.py"));
+        supportingFiles.add(new SupportingFile("shared_imports/response_imports.hbs", packagePath() + File.separator + "shared_imports", "response_imports.py"));
+        supportingFiles.add(new SupportingFile("shared_imports/schema_imports.hbs", packagePath() + File.separator + "shared_imports", "schema_imports.py"));
+        supportingFiles.add(new SupportingFile("shared_imports/security_scheme_imports.hbs", packagePath() + File.separator + "shared_imports", "security_scheme_imports.py"));
+        supportingFiles.add(new SupportingFile("shared_imports/server_imports.hbs", packagePath() + File.separator + "shared_imports", "server_imports.py"));
+        supportingFiles.add(new SupportingFile("shared_imports/operation_imports.hbs", packagePath() + File.separator + "shared_imports", "operation_imports.py"));
+
         if (Boolean.FALSE.equals(excludeTests)) {
             supportingFiles.add(new SupportingFile("__init__.hbs", testFolder, "__init__.py"));
             supportingFiles.add(new SupportingFile("__init__.hbs", testFolder + File.separator + modelPackage.replace('.', File.separatorChar), "__init__.py"));

modules/openapi-json-schema-generator/src/main/resources/python/components/headers/header.hbs

@@ -10,17 +10,15 @@
 {{> _helper_imports }}
 {{jsonPathPiece.camelCase}} = {{refInfo.refModule}}.{{refInfo.refClass}}
 {{else}}
-    {{#if content}}
-import typing, typing_extensions
-
-    {{/if}}
-from {{packageName}} import api_client
+from {{packageName}}.shared_imports.header_imports import *
     {{#if schema}}
+
         {{#with schema}}
 from . import {{jsonPathPiece.snakeCase}}
         {{/with}}
     {{else}}
         {{#if content}}
+
             {{#each content}}
                 {{#with this}}
                     {{#with schema}}

modules/openapi-json-schema-generator/src/main/resources/python/components/parameters/parameter.hbs

@@ -10,18 +10,15 @@
 {{> _helper_imports }}
 {{jsonPathPiece.camelCase}} = {{refInfo.refModule}}.{{refInfo.refClass}}
 {{else}}
-    {{#if content}}
-import typing, typing_extensions
-
-    {{/if}}
-from {{packageName}} import api_client
-
+from {{packageName}}.shared_imports.header_imports import *
     {{#if schema}}
+
         {{#with schema}}
 from . import {{jsonPathPiece.snakeCase}}
         {{/with}}
     {{else}}
         {{#if content}}
+
             {{#each content}}
                 {{#with this}}
                     {{#with schema}}

modules/openapi-json-schema-generator/src/main/resources/python/components/request_bodies/request_body.hbs

@@ -10,9 +10,8 @@
 {{> _helper_imports }}
 {{jsonPathPiece.camelCase}} = {{refInfo.refModule}}.{{refInfo.refClass}}
 {{else}}
-import typing, typing_extensions
+from {{packageName}}.shared_imports.header_imports import *
 
-from {{packageName}} import api_client
     {{#each content}}
     {{#with this}}
         {{#with schema}}

modules/openapi-json-schema-generator/src/main/resources/python/components/responses/response.hbs

@@ -10,38 +10,22 @@
 {{> _helper_imports }}
 {{jsonPathPiece.camelCase}} = {{refInfo.refModule}}.{{refInfo.refClass}}
 {{else}}
-import dataclasses
-    {{#or content headers}}
-        {{#if headers}}
-import datetime
-import decimal
-import io
-        {{/if}}
-import typing
-        {{#if headers}}
-import uuid
-        {{/if}}
-
-        {{#if headers}}
-import frozendict
-        {{/if}}
-import typing_extensions
-    {{/or}}
-import urllib3
-
-from {{packageName}} import api_client
-from {{packageName}} import schemas
+from {{packageName}}.shared_imports.response_imports import *
     {{#if content}}
+
     {{#each content}}
         {{#with this.schema}}
 from .content.{{../@key.snakeCase}} import {{jsonPathPiece.snakeCase}} as {{../@key.snakeCase}}_{{jsonPathPiece.snakeCase}}
         {{/with}}
     {{/each}}
     {{/if}}
-    {{#each headers}}
-from .headers import {{jsonPathPiece.snakeCase}}
-    {{/each}}
     {{#if headers}}
+        {{#unless content}}
+
+        {{/unless}}
+        {{#each headers}}
+from .headers import {{jsonPathPiece.snakeCase}}
+        {{/each}}
 {{> components/responses/_helper_header_schema_and_def xParams=headers xParamsName="Header" }}
     {{/if}}
 

modules/openapi-json-schema-generator/src/main/resources/python/components/schemas/schema.hbs

@@ -10,7 +10,7 @@
 {{> _helper_imports }}
 {{> components/schemas/_helper_schema_switch_case identifierPieces=(append identifierPieces jsonPathPiece) }}
     {{else}}
-{{> _helper_imports_schema_types }}
+from {{packageName}}.shared_imports.schema_imports import *
 {{> components/schemas/_helper_schema_switch_case identifierPieces=(append identifierPieces jsonPathPiece) }}
         {{#if imports}}
 

modules/openapi-json-schema-generator/src/main/resources/python/components/security_schemes/security_scheme.hbs

@@ -10,11 +10,7 @@
 {{> _helper_imports }}
 {{jsonPathPiece.camelCase}} = {{refInfo.refModule}}.{{refInfo.refClass}}
     {{else}}
-import dataclasses
-import typing
-import typing_extensions
-
-from {{packageName}} import security_schemes
+from {{packageName}}.shared_imports.security_scheme_imports import *
 
         {{#eq type "apiKey"}}
 @dataclasses.dataclass

modules/openapi-json-schema-generator/src/main/resources/python/paths/path/verb/operation.hbs

@@ -20,16 +20,7 @@ from {{packageName}}.security import (
         {{/gt}}
     {{/neq}}
 {{/eq}}
-import datetime  # noqa: F401
-import decimal  # noqa: F401
-import io  # noqa: F401
-import typing  # noqa: F401
-import typing_extensions  # noqa: F401
-import uuid  # noqa: F401
-
-import frozendict  # noqa: F401
-
-from {{packageName}} import schemas  # noqa: F401
+from {{packageName}}.shared_imports.operation_imports import *
 {{#if imports}}
 
 {{/if}}

modules/openapi-json-schema-generator/src/main/resources/python/servers/server.hbs

@@ -1,14 +1,8 @@
 # coding: utf-8
 {{> _helper_header }}
 
-import dataclasses
-import typing
-{{#if server.variables}}
-import typing_extensions
-{{/if}}
+from {{packageName}}.shared_imports.server_imports import *
 {{#with server}}
-
-from {{packageName}} import server{{#if variables}}, schemas{{/if}}
     {{#if variables}}
 
 

modules/openapi-json-schema-generator/src/main/resources/python/shared_imports/header_imports.hbs

@@ -0,0 +1,4 @@
+import typing
+import typing_extensions
+
+from {{packageName}} import api_client

modules/openapi-json-schema-generator/src/main/resources/python/shared_imports/operation_imports.hbs

@@ -0,0 +1,10 @@
+import datetime
+import decimal
+import io
+import typing
+import typing_extensions
+import uuid
+
+import frozendict
+
+from {{packageName}} import schemas

modules/openapi-json-schema-generator/src/main/resources/python/shared_imports/response_imports.hbs

@@ -0,0 +1,12 @@
+import dataclasses
+import datetime
+import decimal
+import io
+import typing
+import uuid
+
+import frozendict
+import typing_extensions
+import urllib3
+
+from {{packageName}} import api_client, schemas

modules/openapi-json-schema-generator/src/main/resources/python/shared_imports/schema_imports.hbs

@@ -0,0 +1,11 @@
+import datetime
+import decimal
+import io
+import re
+import typing
+import typing_extensions
+import uuid
+
+import frozendict
+
+from {{packageName}} import schemas

modules/openapi-json-schema-generator/src/main/resources/python/shared_imports/security_scheme_imports.hbs

@@ -0,0 +1,5 @@
+import dataclasses
+import typing
+import typing_extensions
+
+from {{packageName}} import security_schemes

modules/openapi-json-schema-generator/src/main/resources/python/shared_imports/server_imports.hbs

@@ -0,0 +1,5 @@
+import dataclasses
+import typing
+import typing_extensions
+
+from {{packageName}} import server, schemas

samples/openapi3/client/3_0_3_unit_test/python/.openapi-generator/FILES

@@ -2085,6 +2085,13 @@ src/unit_test_api/security_schemes.py
 src/unit_test_api/server.py
 src/unit_test_api/servers/__init__.py
 src/unit_test_api/servers/server_0.py
+src/unit_test_api/shared_imports/__init__.py
+src/unit_test_api/shared_imports/header_imports.py
+src/unit_test_api/shared_imports/operation_imports.py
+src/unit_test_api/shared_imports/response_imports.py
+src/unit_test_api/shared_imports/schema_imports.py
+src/unit_test_api/shared_imports/security_scheme_imports.py
+src/unit_test_api/shared_imports/server_imports.py
 test-requirements.txt
 test/__init__.py
 test/components/__init__.py

samples/openapi3/client/3_0_3_unit_test/python/src/unit_test_api/components/schema/_not.py

@@ -7,17 +7,7 @@
     Generated by: https://github.com/openapi-json-schema-tools/openapi-json-schema-generator
 """
 
-import datetime  # noqa: F401
-import decimal  # noqa: F401
-import io  # noqa: F401
-import re  # noqa: F401
-import typing  # noqa: F401
-import typing_extensions  # noqa: F401
-import uuid  # noqa: F401
-
-import frozendict  # noqa: F401
-
-from unit_test_api import schemas  # noqa: F401
+from unit_test_api.shared_imports.schema_imports import *
 
 
 class _Not(

samples/openapi3/client/3_0_3_unit_test/python/src/unit_test_api/components/schema/additionalproperties_allows_a_schema_which_should_validate.py

@@ -7,17 +7,7 @@
     Generated by: https://github.com/openapi-json-schema-tools/openapi-json-schema-generator
 """
 
-import datetime  # noqa: F401
-import decimal  # noqa: F401
-import io  # noqa: F401
-import re  # noqa: F401
-import typing  # noqa: F401
-import typing_extensions  # noqa: F401
-import uuid  # noqa: F401
-
-import frozendict  # noqa: F401
-
-from unit_test_api import schemas  # noqa: F401
+from unit_test_api.shared_imports.schema_imports import *
 
 
 class AdditionalpropertiesAllowsASchemaWhichShouldValidate(

samples/openapi3/client/3_0_3_unit_test/python/src/unit_test_api/components/schema/additionalproperties_are_allowed_by_default.py

@@ -7,17 +7,7 @@
     Generated by: https://github.com/openapi-json-schema-tools/openapi-json-schema-generator
 """
 
-import datetime  # noqa: F401
-import decimal  # noqa: F401
-import io  # noqa: F401
-import re  # noqa: F401
-import typing  # noqa: F401
-import typing_extensions  # noqa: F401
-import uuid  # noqa: F401
-
-import frozendict  # noqa: F401
-
-from unit_test_api import schemas  # noqa: F401
+from unit_test_api.shared_imports.schema_imports import *
 
 
 class AdditionalpropertiesAreAllowedByDefault(

samples/openapi3/client/3_0_3_unit_test/python/src/unit_test_api/components/schema/additionalproperties_can_exist_by_itself.py

@@ -7,17 +7,7 @@
     Generated by: https://github.com/openapi-json-schema-tools/openapi-json-schema-generator
 """
 
-import datetime  # noqa: F401
-import decimal  # noqa: F401
-import io  # noqa: F401
-import re  # noqa: F401
-import typing  # noqa: F401
-import typing_extensions  # noqa: F401
-import uuid  # noqa: F401
-
-import frozendict  # noqa: F401
-
-from unit_test_api import schemas  # noqa: F401
+from unit_test_api.shared_imports.schema_imports import *
 
 
 class AdditionalpropertiesCanExistByItself(

samples/openapi3/client/3_0_3_unit_test/python/src/unit_test_api/components/schema/additionalproperties_should_not_look_in_applicators.py

@@ -7,17 +7,7 @@
     Generated by: https://github.com/openapi-json-schema-tools/openapi-json-schema-generator
 """
 
-import datetime  # noqa: F401
-import decimal  # noqa: F401
-import io  # noqa: F401
-import re  # noqa: F401
-import typing  # noqa: F401
-import typing_extensions  # noqa: F401
-import uuid  # noqa: F401
-
-import frozendict  # noqa: F401
-
-from unit_test_api import schemas  # noqa: F401
+from unit_test_api.shared_imports.schema_imports import *
 
 
 class AdditionalpropertiesShouldNotLookInApplicators(

samples/openapi3/client/3_0_3_unit_test/python/src/unit_test_api/components/schema/allof.py

@@ -7,17 +7,7 @@
     Generated by: https://github.com/openapi-json-schema-tools/openapi-json-schema-generator
 """
 
-import datetime  # noqa: F401
-import decimal  # noqa: F401
-import io  # noqa: F401
-import re  # noqa: F401
-import typing  # noqa: F401
-import typing_extensions  # noqa: F401
-import uuid  # noqa: F401
-
-import frozendict  # noqa: F401
-
-from unit_test_api import schemas  # noqa: F401
+from unit_test_api.shared_imports.schema_imports import *
 
 
 class Allof(

samples/openapi3/client/3_0_3_unit_test/python/src/unit_test_api/components/schema/allof_combined_with_anyof_oneof.py

@@ -7,17 +7,7 @@
     Generated by: https://github.com/openapi-json-schema-tools/openapi-json-schema-generator
 """
 
-import datetime  # noqa: F401
-import decimal  # noqa: F401
-import io  # noqa: F401
-import re  # noqa: F401
-import typing  # noqa: F401
-import typing_extensions  # noqa: F401
-import uuid  # noqa: F401
-
-import frozendict  # noqa: F401
-
-from unit_test_api import schemas  # noqa: F401
+from unit_test_api.shared_imports.schema_imports import *
 
 
 class AllofCombinedWithAnyofOneof(