[#21619] fix(python): update pyproject.toml license format with poetry1 fallback

modules/openapi-generator/src/main/resources/python/pyproject.mustache

@@ -16,7 +16,12 @@ authors = [
 ]
 {{/poetry1}}
 {{#licenseInfo}}
+{{#poetry1}}
 license = "{{{licenseInfo}}}"
+{{/poetry1}}
+{{^poetry1}}
+license = { text = "{{{licenseInfo}}}" }
+{{/poetry1}}
 {{/licenseInfo}}
 readme = "README.md"
 {{#poetry1}}

modules/openapi-generator/src/test/java/org/openapitools/codegen/python/PythonClientCodegenTest.java

@@ -25,6 +25,7 @@
 import io.swagger.v3.parser.core.models.ParseOptions;
 import io.swagger.v3.parser.util.SchemaTypeUtil;
 import org.openapitools.codegen.*;
+import org.openapitools.codegen.config.CodegenConfigurator;
 import org.openapitools.codegen.languages.PythonClientCodegen;
 import org.openapitools.codegen.languages.features.CXFServerFeatures;
 import org.testng.Assert;
@@ -611,4 +612,77 @@ public void testInitFileImportsExports() throws IOException {
         assertFileContains(initFilePath, "from openapi_client.models.tag import Tag as Tag");
         assertFileContains(initFilePath, "from openapi_client.models.user import User as User");
     }
+
+    @Test(description = "Verify default license format uses object notation when poetry1 is false")
+    public void testLicenseFormatInPyprojectToml() throws IOException {
+        File output = Files.createTempDirectory("test").toFile().getCanonicalFile();
+        output.deleteOnExit();
+
+        final CodegenConfigurator configurator = new CodegenConfigurator()
+            .setGeneratorName("python")
+            .setInputSpec("src/test/resources/bugs/issue_21619.yaml")
+            .setOutputDir(output.getAbsolutePath())
+            .addAdditionalProperty("licenseInfo", "MIT");
+
+        DefaultGenerator generator = new DefaultGenerator();
+        List<File> files = generator.opts(configurator.toClientOptInput()).generate();
+        files.forEach(File::deleteOnExit);
+
+        TestUtils.assertFileExists(Paths.get(output.getAbsolutePath(), "pyproject.toml"));
+        // When poetry1=false (default), license should use object notation: { text = "MIT" }
+        TestUtils.assertFileContains(Paths.get(output.getAbsolutePath(), "pyproject.toml"),
+            "license = { text = \"MIT\" }");
+    }
+
+    @Test(description = "Verify poetry1 mode uses string notation for license")
+    public void testPoetry1LicenseFormat() throws IOException {
+        File output = Files.createTempDirectory("test").toFile().getCanonicalFile();
+        output.deleteOnExit();
+
+        final CodegenConfigurator configurator = new CodegenConfigurator()
+            .setGeneratorName("python")
+            .setInputSpec("src/test/resources/bugs/issue_21619.yaml")
+            .setOutputDir(output.getAbsolutePath())
+            .addAdditionalProperty("licenseInfo", "Apache-2.0")
+            .addAdditionalProperty("poetry1", true); // Enable legacy poetry1 mode
+
+        DefaultGenerator generator = new DefaultGenerator();
+        List<File> files = generator.opts(configurator.toClientOptInput()).generate();
+        files.forEach(File::deleteOnExit);
+
+        Path pyprojectPath = Paths.get(output.getAbsolutePath(), "pyproject.toml");
+        TestUtils.assertFileExists(pyprojectPath);
+
+        // In poetry1 mode, license should use simple string format: "Apache-2.0"
+        TestUtils.assertFileContains(pyprojectPath, "license = \"Apache-2.0\"");
+
+        // Verify it does NOT use the new object format
+        TestUtils.assertFileNotContains(pyprojectPath, "license = { text = \"Apache-2.0\" }");
+    }
+
+    @Test(description = "Verify non-poetry1 mode uses object notation for license")
+    public void testNonPoetry1LicenseFormat() throws IOException {
+        File output = Files.createTempDirectory("test").toFile().getCanonicalFile();
+        output.deleteOnExit();
+
+        final CodegenConfigurator configurator = new CodegenConfigurator()
+            .setGeneratorName("python")
+            .setInputSpec("src/test/resources/bugs/issue_21619.yaml")
+            .setOutputDir(output.getAbsolutePath())
+            .addAdditionalProperty("licenseInfo", "BSD-3-Clause")
+            .addAdditionalProperty("poetry1", false); // Explicitly disable poetry1 mode
+
+        DefaultGenerator generator = new DefaultGenerator();
+        List<File> files = generator.opts(configurator.toClientOptInput()).generate();
+        files.forEach(File::deleteOnExit);
+
+        Path pyprojectPath = Paths.get(output.getAbsolutePath(), "pyproject.toml");
+        TestUtils.assertFileExists(pyprojectPath);
+
+        // In non-poetry1 mode, license should use object format: { text = "BSD-3-Clause" }
+        TestUtils.assertFileContains(pyprojectPath, "license = { text = \"BSD-3-Clause\" }");
+
+        // Verify it does NOT use the legacy string format
+        TestUtils.assertFileNotContains(pyprojectPath, "license = \"BSD-3-Clause\"");
+    }
 }

modules/openapi-generator/src/test/resources/bugs/issue_21619.yaml

@@ -0,0 +1,31 @@
+openapi: 3.0.0
+info:
+  title: License Format Test API
+  version: 1.0.0
+  description: Simple API for testing pyproject.toml license format changes
+paths:
+  /test:
+    get:
+      operationId: getTest
+      summary: Simple test endpoint
+      responses:
+        '200':
+          description: Success
+          content:
+            application/json:
+              schema:
+                type: object
+                properties:
+                  message:
+                    type: string
+                    example: "Hello World"
+components:
+  schemas:
+    TestModel:
+      type: object
+      properties:
+        id:
+          type: integer
+          format: int64
+        name:
+          type: string

samples/client/echo_api/python-disallowAdditionalPropertiesIfNotPresent/pyproject.toml

@@ -5,7 +5,7 @@ description = "Echo Server API"
 authors = [
   {name = "OpenAPI Generator Community",email = "team@openapitools.org"},
 ]
-license = "Apache 2.0"
+license = { text = "Apache 2.0" }
 readme = "README.md"
 keywords = ["OpenAPI", "OpenAPI-Generator", "Echo Server API"]
 requires-python = ">=3.9"

samples/client/echo_api/python/pyproject.toml

@@ -5,7 +5,7 @@ description = "Echo Server API"
 authors = [
   {name = "OpenAPI Generator Community",email = "team@openapitools.org"},
 ]
-license = "Apache 2.0"
+license = { text = "Apache 2.0" }
 readme = "README.md"
 keywords = ["OpenAPI", "OpenAPI-Generator", "Echo Server API"]
 requires-python = ">=3.9"

samples/openapi3/client/petstore/python/pyproject.toml

@@ -5,7 +5,7 @@ description = "OpenAPI Petstore"
 authors = [
   {name = "OpenAPI Generator Community",email = "team@openapitools.org"},
 ]
-license = "Apache-2.0"
+license = { text = "Apache-2.0" }
 readme = "README.md"
 keywords = ["OpenAPI", "OpenAPI-Generator", "OpenAPI Petstore"]
 requires-python = ">=3.9"