[Python] Updates python test framework to pytest (#4765)

* Switches python generators to use pytest, useNose CLI option added if to allow nose to be used instead * Adds ensure-up-to-date changes * Adds setup.cfg to python clients so we can configure nose when useNose=true * Adds fix for python-aiohttp testing, adds files missing from ensure-up-to-date
2025-05-13 05:00:50 +00:00 · 2019-12-22 00:14:04 -06:00 · 2019-12-22 00:14:04 -06:00 · 3959530465
commit 3959530465
parent 1084cd38a1
96 changed files with 385 additions and 188 deletions
--- a/bin/python-server-all.sh
+++ b/bin/python-server-all.sh
@ -3,3 +3,4 @@
 ./bin/python-server-aiohttp-petstore.sh
 ./bin/python-server-flask-petstore.sh
 ./bin/python-server-flask-petstore-python2.sh
+./bin/python-server-blueplanet-petstore.sh
--- a/docs/generators/python-aiohttp.md
+++ b/docs/generators/python-aiohttp.md
@ -16,3 +16,4 @@ sidebar_label: python-aiohttp
 |defaultController|default controller| |default_controller|
 |supportPython2|support python2| |false|
 |serverPort|TCP port to listen to in app.run| |8080|
+|useNose|use the nose test framework| |false|
--- a/docs/generators/python-blueplanet.md
+++ b/docs/generators/python-blueplanet.md
@ -16,3 +16,4 @@ sidebar_label: python-blueplanet
 |defaultController|default controller| |default_controller|
 |supportPython2|support python2| |false|
 |serverPort|TCP port to listen to in app.run| |8080|
+|useNose|use the nose test framework| |false|
--- a/docs/generators/python-experimental.md
+++ b/docs/generators/python-experimental.md
@ -12,4 +12,5 @@ sidebar_label: python-experimental
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |hideGenerationTimestamp|Hides the generation timestamp when files are generated.| |true|
 |generateSourceCodeOnly|Specifies that only a library source code is to be generated.| |false|
+|useNose|use the nose test framework| |false|
 |library|library template (sub-template) to use: asyncio, tornado, urllib3| |urllib3|
--- a/docs/generators/python-flask.md
+++ b/docs/generators/python-flask.md
@ -16,3 +16,4 @@ sidebar_label: python-flask
 |defaultController|default controller| |default_controller|
 |supportPython2|support python2| |false|
 |serverPort|TCP port to listen to in app.run| |8080|
+|useNose|use the nose test framework| |false|
--- a/docs/generators/python.md
+++ b/docs/generators/python.md
@ -12,4 +12,5 @@ sidebar_label: python
 |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true|
 |hideGenerationTimestamp|Hides the generation timestamp when files are generated.| |true|
 |generateSourceCodeOnly|Specifies that only a library source code is to be generated.| |false|
+|useNose|use the nose test framework| |false|
 |library|library template (sub-template) to use: asyncio, tornado, urllib3| |urllib3|
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonAbstractConnexionServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonAbstractConnexionServerCodegen.java
@ -48,6 +48,8 @@ public class PythonAbstractConnexionServerCodegen extends DefaultCodegen impleme
    public static final String CONTROLLER_PACKAGE = "controllerPackage";
    public static final String DEFAULT_CONTROLLER = "defaultController";
    public static final String SUPPORT_PYTHON2 = "supportPython2";
+    // nose is a python testing framework, we use pytest if USE_NOSE is unset
+    public static final String USE_NOSE = "useNose";
    static final String MEDIA_TYPE = "mediaType";

    protected int serverPort = 8080;
@ -57,6 +59,7 @@ public class PythonAbstractConnexionServerCodegen extends DefaultCodegen impleme
    protected String defaultController;
    protected Map<Character, String> regexModifiers;
    protected boolean fixBodyName;
+    protected boolean useNose = Boolean.FALSE;

    public PythonAbstractConnexionServerCodegen(String templateDirectory, boolean fixBodyNameValue) {
        super();
@ -156,6 +159,8 @@ public class PythonAbstractConnexionServerCodegen extends DefaultCodegen impleme
                defaultValue("false"));
        cliOptions.add(new CliOption("serverPort", "TCP port to listen to in app.run").
                defaultValue("8080"));
+        cliOptions.add(CliOption.newBoolean(USE_NOSE, "use the nose test framework").
+                defaultValue(Boolean.FALSE.toString()));
    }

    protected void addSupportingFiles() {
@ -200,6 +205,9 @@ public class PythonAbstractConnexionServerCodegen extends DefaultCodegen impleme
            additionalProperties.put(SUPPORT_PYTHON2, Boolean.TRUE);
            typeMapping.put("long", "long");
        }
+        if (additionalProperties.containsKey(USE_NOSE)) {
+            setUseNose((String) additionalProperties.get(USE_NOSE));
+        }
        supportingFiles.add(new SupportingFile("__main__.mustache", packagePath(), "__main__.py"));
        supportingFiles.add(new SupportingFile("util.mustache", packagePath(), "util.py"));
        supportingFiles.add(new SupportingFile("typing_utils.mustache", packagePath(), "typing_utils.py"));
@ -214,6 +222,10 @@ public class PythonAbstractConnexionServerCodegen extends DefaultCodegen impleme
        controllerPackage = packageName + "." + controllerPackage;
    }

+    public void setUseNose(String val) {
+        this.useNose = Boolean.valueOf(val);
+    }
+
    private static String packageToPath(String pkg) {
        return pkg.replace(".", File.separator);
    }
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonAiohttpConnexionServerCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonAiohttpConnexionServerCodegen.java
@ -44,5 +44,7 @@ public class PythonAiohttpConnexionServerCodegen extends PythonAbstractConnexion
        supportingFiles.add(new SupportingFile("conftest.mustache", testPackage, "conftest.py"));
        supportingFiles.add(new SupportingFile("__init__test.mustache", testPackage, "__init__.py"));
        supportingFiles.add(new SupportingFile("__init__main.mustache", packagePath(), "__init__.py"));
+        supportingFiles.add(new SupportingFile("tox.mustache", "", "tox.ini"));
+        supportingFiles.add(new SupportingFile("gitignore.mustache", "", ".gitignore"));
    }
 }
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonClientCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/PythonClientCodegen.java
@ -40,6 +40,8 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig

    public static final String PACKAGE_URL = "packageUrl";
    public static final String DEFAULT_LIBRARY = "urllib3";
+    // nose is a python testing framework, we use pytest if USE_NOSE is unset
+    public static final String USE_NOSE = "useNose";

    protected String packageName = "openapi_client";
    protected String packageVersion = "1.0.0";
@ -47,6 +49,7 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
    protected String packageUrl;
    protected String apiDocPath = "docs/";
    protected String modelDocPath = "docs/";
+    protected boolean useNose = Boolean.FALSE;

    protected Map<Character, String> regexModifiers;

@ -151,6 +154,8 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
                .defaultValue(Boolean.TRUE.toString()));
        cliOptions.add(new CliOption(CodegenConstants.SOURCECODEONLY_GENERATION, CodegenConstants.SOURCECODEONLY_GENERATION_DESC)
                .defaultValue(Boolean.FALSE.toString()));
+        cliOptions.add(CliOption.newBoolean(USE_NOSE, "use the nose test framework").
+                defaultValue(Boolean.FALSE.toString()));

        supportedLibraries.put("urllib3", "urllib3-based client");
        supportedLibraries.put("asyncio", "Asyncio-based client (python 3.5+)");
@ -216,6 +221,10 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
            setPackageUrl((String) additionalProperties.get(PACKAGE_URL));
        }

+        if (additionalProperties.containsKey(USE_NOSE)) {
+            setUseNose((String) additionalProperties.get(USE_NOSE));
+        }
+
        String readmePath = "README.md";
        String readmeTemplate = "README.mustache";
        if (generateSourceCodeOnly) {
@ -228,6 +237,7 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
            supportingFiles.add(new SupportingFile("tox.mustache", "", "tox.ini"));
            supportingFiles.add(new SupportingFile("test-requirements.mustache", "", "test-requirements.txt"));
            supportingFiles.add(new SupportingFile("requirements.mustache", "", "requirements.txt"));
+            supportingFiles.add(new SupportingFile("setup_cfg.mustache", "", "setup.cfg"));

            supportingFiles.add(new SupportingFile("git_push.sh.mustache", "", "git_push.sh"));
            supportingFiles.add(new SupportingFile("gitignore.mustache", "", ".gitignore"));
@ -579,6 +589,10 @@ public class PythonClientCodegen extends DefaultCodegen implements CodegenConfig
        this.packageName = packageName;
    }

+    public void setUseNose(String val) {
+        this.useNose = Boolean.valueOf(val);
+    }
+
    public void setProjectName(String projectName) {
        this.projectName = projectName;
    }
--- a/modules/openapi-generator/src/main/resources/python-aiohttp/gitignore.mustache
+++ b/modules/openapi-generator/src/main/resources/python-aiohttp/gitignore.mustache
@ -0,0 +1,66 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*,cover
+.hypothesis/
+venv/
+.venv/
+.python-version
+.pytest_cache
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+#Ipython Notebook
+.ipynb_checkpoints
--- a/modules/openapi-generator/src/main/resources/python-aiohttp/test-requirements.mustache
+++ b/modules/openapi-generator/src/main/resources/python-aiohttp/test-requirements.mustache
@ -1,6 +1,13 @@
+{{#useNose}}
 coverage>=4.0.3
-pytest>=1.3.7
+nose>=1.3.7
 pluggy>=0.3.1
 py>=1.4.31
 randomize>=0.13
+{{/useNose}}
+{{^useNose}}
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
 pytest-aiohttp>=0.3.0
+{{/useNose}}
--- a/modules/openapi-generator/src/main/resources/python-aiohttp/tox.mustache
+++ b/modules/openapi-generator/src/main/resources/python-aiohttp/tox.mustache
@ -0,0 +1,10 @@
+[tox]
+envlist = py3
+skipsdist=True
+
+[testenv]
+deps=-r{toxinidir}/requirements.txt
+     -r{toxinidir}/test-requirements.txt
+
+commands=
+   {{^useNose}}pytest --cov={{{packageName}}}{{/useNose}}{{#useNose}}nosetests{{/useNose}}
--- a/modules/openapi-generator/src/main/resources/python-blueplanet/app/gitignore.mustache
+++ b/modules/openapi-generator/src/main/resources/python-blueplanet/app/gitignore.mustache
@ -46,6 +46,7 @@ coverage.xml
 .hypothesis/
 venv/
 .python-version
+.pytest_cache

 # Translations
 *.mo
--- a/modules/openapi-generator/src/main/resources/python-blueplanet/app/test-requirements.mustache
+++ b/modules/openapi-generator/src/main/resources/python-blueplanet/app/test-requirements.mustache
@ -1,6 +1,13 @@
-flask_testing==0.6.1
+{{#useNose}}
 coverage>=4.0.3
 nose>=1.3.7
 pluggy>=0.3.1
 py>=1.4.31
 randomize>=0.13
+{{/useNose}}
+{{^useNose}}
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
+{{/useNose}}
+flask_testing==0.6.1
--- a/modules/openapi-generator/src/main/resources/python-blueplanet/app/tox.mustache
+++ b/modules/openapi-generator/src/main/resources/python-blueplanet/app/tox.mustache
@ -6,5 +6,4 @@ deps=-r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt

 commands=
-   nosetests \
-      []
+   {{^useNose}}pytest --cov={{{packageName}}}{{/useNose}}{{#useNose}}nosetests{{/useNose}}
--- a/modules/openapi-generator/src/main/resources/python-flask/gitignore.mustache
+++ b/modules/openapi-generator/src/main/resources/python-flask/gitignore.mustache
@ -45,7 +45,9 @@ coverage.xml
 *,cover
 .hypothesis/
 venv/
+.venv/
 .python-version
+.pytest_cache

 # Translations
 *.mo
--- a/modules/openapi-generator/src/main/resources/python-flask/requirements.mustache
+++ b/modules/openapi-generator/src/main/resources/python-flask/requirements.mustache
@ -1,4 +1,7 @@
-connexion >= 2.0.2
+connexion >= 2.5.0; python_version>="3.6"
+connexion >= 2.3.0; python_version=="3.5"
+connexion >= 2.3.0; python_version=="3.4"
+connexion == 2.4.0; python_version<="2.7"
 swagger-ui-bundle >= 0.0.2
 python_dateutil >= 2.6.0
 {{#supportPython2}}
--- a/modules/openapi-generator/src/main/resources/python-flask/test-requirements.mustache
+++ b/modules/openapi-generator/src/main/resources/python-flask/test-requirements.mustache
@ -1,6 +1,13 @@
-flask_testing==0.6.1
+{{#useNose}}
 coverage>=4.0.3
 nose>=1.3.7
 pluggy>=0.3.1
 py>=1.4.31
 randomize>=0.13
+{{/useNose}}
+{{^useNose}}
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
+{{/useNose}}
+flask_testing==0.6.1
--- a/modules/openapi-generator/src/main/resources/python-flask/tox.mustache
+++ b/modules/openapi-generator/src/main/resources/python-flask/tox.mustache
@ -6,5 +6,4 @@ deps=-r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt

 commands=
-   nosetests \
-      []
+   {{^useNose}}pytest --cov={{{packageName}}}{{/useNose}}{{#useNose}}nosetests{{/useNose}}
--- a/modules/openapi-generator/src/main/resources/python/gitignore.mustache
+++ b/modules/openapi-generator/src/main/resources/python/gitignore.mustache
@ -45,7 +45,9 @@ coverage.xml
 *,cover
 .hypothesis/
 venv/
+.venv/
 .python-version
+.pytest_cache

 # Translations
 *.mo
--- a/modules/openapi-generator/src/main/resources/python/python-experimental/test-requirements.mustache
+++ b/modules/openapi-generator/src/main/resources/python/python-experimental/test-requirements.mustache
@ -1,13 +1,13 @@
-{{^asyncio}}
+{{#useNose}}
 coverage>=4.0.3
 nose>=1.3.7
-{{/asyncio}}
-{{#asyncio}}
-pytest>=3.6.0
-pytest-cov>=2.6.1
-{{/asyncio}}
 pluggy>=0.3.1
 py>=1.4.31
 randomize>=0.13
+{{/useNose}}
+{{^useNose}}
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
+{{/useNose}}
 mock; python_version<="2.7"
-
--- a/modules/openapi-generator/src/main/resources/python/setup_cfg.mustache
+++ b/modules/openapi-generator/src/main/resources/python/setup_cfg.mustache
@ -0,0 +1,13 @@
+{{#useNose}}
+[nosetests]
+logging-clear-handlers=true
+verbosity=2
+randomize=true
+exe=true
+with-coverage=true
+cover-package=petstore_api
+cover-erase=true
+
+{{/useNose}}
+[flake8]
+max-line-length=99
--- a/modules/openapi-generator/src/main/resources/python/test-requirements.mustache
+++ b/modules/openapi-generator/src/main/resources/python/test-requirements.mustache
@ -1,11 +1,12 @@
-{{^asyncio}}
+{{#useNose}}
 coverage>=4.0.3
 nose>=1.3.7
-{{/asyncio}}
-{{#asyncio}}
-pytest>=3.6.0
-pytest-cov>=2.6.1
-{{/asyncio}}
 pluggy>=0.3.1
 py>=1.4.31
 randomize>=0.13
+{{/useNose}}
+{{^useNose}}
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
+{{/useNose}}
--- a/modules/openapi-generator/src/main/resources/python/tox.mustache
+++ b/modules/openapi-generator/src/main/resources/python/tox.mustache
@ -11,10 +11,4 @@ deps=-r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt

 commands=
-{{^asyncio}}
-   nosetests \
-      []
-{{/asyncio}}
-{{#asyncio}}
-   pytest -v --cov {{{packageName}}}
-{{/asyncio}}
+   {{^useNose}}pytest --cov={{{packageName}}}{{/useNose}}{{#useNose}}nosetests{{/useNose}}
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/options/PythonClientOptionsProvider.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/options/PythonClientOptionsProvider.java
@ -28,6 +28,7 @@ public class PythonClientOptionsProvider implements OptionsProvider {
    public static final String PROJECT_NAME_VALUE = "swagger-client-python";
    public static final String PACKAGE_VERSION_VALUE = "1.0.0-SNAPSHOT";
    public static final String PACKAGE_URL_VALUE = "";
+    public static final String USE_NOSE_VALUE = "false";

    @Override
    public String getLanguage() {
@ -45,6 +46,7 @@ public class PythonClientOptionsProvider implements OptionsProvider {
                .put(CodegenConstants.HIDE_GENERATION_TIMESTAMP, "true")
                .put(CodegenConstants.SOURCECODEONLY_GENERATION, "false")
                .put(CodegenConstants.LIBRARY, "urllib3")
+                .put(PythonClientCodegen.USE_NOSE, USE_NOSE_VALUE)
                .build();
    }

--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/python/PythonClientOptionsTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/python/PythonClientOptionsTest.java
@ -56,6 +56,9 @@ public class PythonClientOptionsTest extends AbstractOptionsTest {
            clientCodegen.setPackageUrl(PythonClientOptionsProvider.PACKAGE_URL_VALUE);
            times = 1;

+            clientCodegen.setUseNose(PythonClientOptionsProvider.USE_NOSE_VALUE);
+            times = 1;
+
            clientCodegen.packagePath();
            result = PythonClientOptionsProvider.PACKAGE_NAME_VALUE.replace('.', File.separatorChar);
            minTimes = 1;
--- a/samples/client/petstore/python-asyncio/.gitignore
+++ b/samples/client/petstore/python-asyncio/.gitignore
@ -45,7 +45,9 @@ coverage.xml
 *,cover
 .hypothesis/
 venv/
+.venv/
 .python-version
+.pytest_cache

 # Translations
 *.mo
--- a/samples/client/petstore/python-asyncio/dev-requirements.txt
+++ b/samples/client/petstore/python-asyncio/dev-requirements.txt
@ -1,4 +1,2 @@
 tox
-coverage
-randomize
 flake8
--- a/samples/client/petstore/python-asyncio/setup.cfg
+++ b/samples/client/petstore/python-asyncio/setup.cfg
@ -0,0 +1,2 @@
+[flake8]
+max-line-length=99
--- a/samples/client/petstore/python-asyncio/test-requirements.txt
+++ b/samples/client/petstore/python-asyncio/test-requirements.txt
@ -1,5 +1,3 @@
-pytest>=3.6.0
-pytest-cov>=2.6.1
-pluggy>=0.3.1
-py>=1.4.31
-randomize>=0.13
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
--- a/samples/client/petstore/python-asyncio/test_python3.sh
+++ b/samples/client/petstore/python-asyncio/test_python3.sh
@ -18,7 +18,6 @@ fi

 ### install dependencies
 pip install -r $REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT
-python setup.py develop

 ### run tests
 tox || exit 1
--- a/samples/client/petstore/python-asyncio/tox.ini
+++ b/samples/client/petstore/python-asyncio/tox.ini
@ -6,4 +6,4 @@ deps=-r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt

 commands=
-   pytest -v --cov petstore_api
+   pytest --cov=petstore_api
--- a/samples/client/petstore/python-experimental/.gitignore
+++ b/samples/client/petstore/python-experimental/.gitignore
@ -45,7 +45,9 @@ coverage.xml
 *,cover
 .hypothesis/
 venv/
+.venv/
 .python-version
+.pytest_cache

 # Translations
 *.mo
--- a/samples/client/petstore/python-experimental/dev-requirements.txt
+++ b/samples/client/petstore/python-experimental/dev-requirements.txt
@ -1,5 +1,2 @@
-nose
 tox
-coverage
-randomize
 flake8
--- a/samples/client/petstore/python-experimental/pom.xml
+++ b/samples/client/petstore/python-experimental/pom.xml
@ -27,7 +27,7 @@
                <version>1.2.1</version>
                <executions>
                    <execution>
-                        <id>nose-test</id>
+                        <id>test</id>
                        <phase>integration-test</phase>
                        <goals>
                            <goal>exec</goal>
--- a/samples/client/petstore/python-experimental/setup.cfg
+++ b/samples/client/petstore/python-experimental/setup.cfg
@ -1,11 +1,2 @@
-[nosetests]
-logging-clear-handlers=true
-verbosity=2
-randomize=true
-exe=true
-with-coverage=true
-cover-package=petstore_api
-cover-erase=true
-
 [flake8]
 max-line-length=99
--- a/samples/client/petstore/python-experimental/test-requirements.txt
+++ b/samples/client/petstore/python-experimental/test-requirements.txt
@ -1,7 +1,4 @@
-coverage>=4.0.3
-nose>=1.3.7
-pluggy>=0.3.1
-py>=1.4.31
-randomize>=0.13
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
 mock; python_version<="2.7"
-
--- a/samples/client/petstore/python-experimental/test_python2.sh
+++ b/samples/client/petstore/python-experimental/test_python2.sh
@ -19,11 +19,9 @@ fi

 ### install dependencies
 pip install -r $REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT
-pip install -r test-requirements.txt
-python setup.py develop

 ### run tests
-nosetests || exit 1
+tox -e py27 || exit 1

 ### static analysis of code
 flake8 --show-source petstore_api/
--- a/samples/client/petstore/python-experimental/test_python2_and_3.sh
+++ b/samples/client/petstore/python-experimental/test_python2_and_3.sh
@ -18,7 +18,6 @@ fi

 ### install dependencies
 pip install -r $REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT
-python setup.py develop

 ### run tests
 tox || exit 1
--- a/samples/client/petstore/python-experimental/tox.ini
+++ b/samples/client/petstore/python-experimental/tox.ini
@ -6,5 +6,4 @@ deps=-r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt

 commands=
-   nosetests \
-      []
+   pytest --cov=petstore_api
--- a/samples/client/petstore/python-tornado/.gitignore
+++ b/samples/client/petstore/python-tornado/.gitignore
@ -45,7 +45,9 @@ coverage.xml
 *,cover
 .hypothesis/
 venv/
+.venv/
 .python-version
+.pytest_cache

 # Translations
 *.mo
--- a/samples/client/petstore/python-tornado/dev-requirements.txt
+++ b/samples/client/petstore/python-tornado/dev-requirements.txt
@ -1,5 +1,2 @@
-nose
 tox
-coverage
-randomize
 flake8
--- a/samples/client/petstore/python-tornado/pom.xml
+++ b/samples/client/petstore/python-tornado/pom.xml
@ -27,7 +27,7 @@
                <version>1.2.1</version>
                <executions>
                    <execution>
-                        <id>nose-test</id>
+                        <id>test</id>
                        <phase>integration-test</phase>
                        <goals>
                            <goal>exec</goal>
--- a/samples/client/petstore/python-tornado/setup.cfg
+++ b/samples/client/petstore/python-tornado/setup.cfg
@ -0,0 +1,2 @@
+[flake8]
+max-line-length=99
--- a/samples/client/petstore/python-tornado/test-requirements.txt
+++ b/samples/client/petstore/python-tornado/test-requirements.txt
@ -1,5 +1,3 @@
-coverage>=4.0.3
-nose>=1.3.7
-pluggy>=0.3.1
-py>=1.4.31
-randomize>=0.13
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
--- a/samples/client/petstore/python-tornado/test_python2_and_3.sh
+++ b/samples/client/petstore/python-tornado/test_python2_and_3.sh
@ -18,7 +18,6 @@ fi

 ### install dependencies
 pip install -r $REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT
-python setup.py develop

 ### run tests
 tox || exit 1
--- a/samples/client/petstore/python-tornado/tox.ini
+++ b/samples/client/petstore/python-tornado/tox.ini
@ -6,5 +6,4 @@ deps=-r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt

 commands=
-   nosetests \
-      []
+   pytest --cov=petstore_api
--- a/samples/client/petstore/python/.gitignore
+++ b/samples/client/petstore/python/.gitignore
@ -45,7 +45,9 @@ coverage.xml
 *,cover
 .hypothesis/
 venv/
+.venv/
 .python-version
+.pytest_cache

 # Translations
 *.mo
--- a/samples/client/petstore/python/dev-requirements.txt
+++ b/samples/client/petstore/python/dev-requirements.txt
@ -1,5 +1,2 @@
-nose
 tox
-coverage
-randomize
 flake8
--- a/samples/client/petstore/python/pom.xml
+++ b/samples/client/petstore/python/pom.xml
@ -27,7 +27,7 @@
                <version>1.2.1</version>
                <executions>
                    <execution>
-                        <id>nose-test</id>
+                        <id>test</id>
                        <phase>integration-test</phase>
                        <goals>
                            <goal>exec</goal>
--- a/samples/client/petstore/python/setup.cfg
+++ b/samples/client/petstore/python/setup.cfg
@ -1,11 +1,2 @@
-[nosetests]
-logging-clear-handlers=true
-verbosity=2
-randomize=true
-exe=true
-with-coverage=true
-cover-package=petstore_api
-cover-erase=true
-
 [flake8]
 max-line-length=99
--- a/samples/client/petstore/python/test-requirements.txt
+++ b/samples/client/petstore/python/test-requirements.txt
@ -1,5 +1,3 @@
-coverage>=4.0.3
-nose>=1.3.7
-pluggy>=0.3.1
-py>=1.4.31
-randomize>=0.13
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
--- a/samples/client/petstore/python/test_python2.sh
+++ b/samples/client/petstore/python/test_python2.sh
@ -11,17 +11,16 @@ export LANG=en_US.UTF-8

 ### set virtualenv
 if [ -z "$VIRTUAL_ENV" ]; then
-		virtualenv $VENV --no-site-packages --always-copy
+		virtualenv $VENV --no-site-packages --always-copy --python python
 		source $VENV/bin/activate
    DEACTIVE=true
 fi

 ### install dependencies
 pip install -r $REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT
-python setup.py develop

 ### run tests
-nosetests || exit 1
+tox -e py27 || exit 1

 ### static analysis of code
 flake8 --show-source petstore_api/
@ -30,4 +29,3 @@ flake8 --show-source petstore_api/
 #if [ $DEACTIVE == true ]; then
 #    deactivate
 #fi
-
--- a/samples/client/petstore/python/test_python2_and_3.sh
+++ b/samples/client/petstore/python/test_python2_and_3.sh
@ -18,7 +18,6 @@ fi

 ### install dependencies
 pip install -r $REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT
-python setup.py develop

 ### run tests
 tox || exit 1
--- a/samples/client/petstore/python/tests/test_pet_api.py
+++ b/samples/client/petstore/python/tests/test_pet_api.py
@ -157,7 +157,7 @@ class PetApiTests(unittest.TestCase):
        response = thread.get()
        response2 = thread2.get()

-        self.assertEquals(response.id, self.pet.id)
+        self.assertEqual(response.id, self.pet.id)
        self.assertIsNotNone(response2.id, self.pet.id)

    def test_async_with_http_info(self):
@ -167,7 +167,7 @@ class PetApiTests(unittest.TestCase):
        data, status, headers = thread.get()

        self.assertIsInstance(data, petstore_api.Pet)
-        self.assertEquals(status, 200)
+        self.assertEqual(status, 200)

    def test_async_exception(self):
        self.pet_api.add_pet(self.pet)
--- a/samples/client/petstore/python/tox.ini
+++ b/samples/client/petstore/python/tox.ini
@ -6,5 +6,4 @@ deps=-r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt

 commands=
-   nosetests \
-      []
+   pytest --cov=petstore_api
--- a/samples/openapi3/client/petstore/python/.gitignore
+++ b/samples/openapi3/client/petstore/python/.gitignore
@ -45,7 +45,9 @@ coverage.xml
 *,cover
 .hypothesis/
 venv/
+.venv/
 .python-version
+.pytest_cache

 # Translations
 *.mo
--- a/samples/openapi3/client/petstore/python/dev-requirements.txt
+++ b/samples/openapi3/client/petstore/python/dev-requirements.txt
@ -0,0 +1,2 @@
+tox
+flake8
--- a/samples/openapi3/client/petstore/python/pom.xml
+++ b/samples/openapi3/client/petstore/python/pom.xml
@ -27,7 +27,7 @@
                <version>1.2.1</version>
                <executions>
                    <execution>
-                        <id>nose-test</id>
+                        <id>test</id>
                        <phase>integration-test</phase>
                        <goals>
                            <goal>exec</goal>
--- a/samples/openapi3/client/petstore/python/setup.cfg
+++ b/samples/openapi3/client/petstore/python/setup.cfg
@ -0,0 +1,2 @@
+[flake8]
+max-line-length=99
--- a/samples/openapi3/client/petstore/python/test-requirements.txt
+++ b/samples/openapi3/client/petstore/python/test-requirements.txt
@ -1,5 +1,3 @@
-coverage>=4.0.3
-nose>=1.3.7
-pluggy>=0.3.1
-py>=1.4.31
-randomize>=0.13
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
--- a/samples/openapi3/client/petstore/python/test_python2.sh
+++ b/samples/openapi3/client/petstore/python/test_python2.sh
@ -18,10 +18,9 @@ fi

 ### install dependencies
 pip install -r $REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT
-python setup.py develop

 ### run tests
-nosetests || exit 1
+tox -e py27 || exit 1

 ### static analysis of code
 flake8 --show-source petstore_api/
--- a/samples/openapi3/client/petstore/python/test_python2_and_3.sh
+++ b/samples/openapi3/client/petstore/python/test_python2_and_3.sh
@ -18,7 +18,6 @@ fi

 ### install dependencies
 pip install -r $REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT
-python setup.py develop

 ### run tests
 tox || exit 1
--- a/samples/openapi3/client/petstore/python/tox.ini
+++ b/samples/openapi3/client/petstore/python/tox.ini
@ -6,5 +6,4 @@ deps=-r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt

 commands=
-   nosetests \
-      []
+   pytest --cov=petstore_api
--- a/samples/openapi3/server/petstore/python-flask-python2/.gitignore
+++ b/samples/openapi3/server/petstore/python-flask-python2/.gitignore
@ -45,7 +45,9 @@ coverage.xml
 *,cover
 .hypothesis/
 venv/
+.venv/
 .python-version
+.pytest_cache

 # Translations
 *.mo
--- a/samples/openapi3/server/petstore/python-flask-python2/requirements.txt
+++ b/samples/openapi3/server/petstore/python-flask-python2/requirements.txt
@ -1,4 +1,7 @@
-connexion >= 2.0.2
+connexion >= 2.5.0; python_version>="3.6"
+connexion >= 2.3.0; python_version=="3.5"
+connexion >= 2.3.0; python_version=="3.4"
+connexion == 2.4.0; python_version<="2.7"
 swagger-ui-bundle >= 0.0.2
 python_dateutil >= 2.6.0
 typing >= 3.5.2.2
--- a/samples/openapi3/server/petstore/python-flask-python2/test-requirements.txt
+++ b/samples/openapi3/server/petstore/python-flask-python2/test-requirements.txt
@ -1,6 +1,4 @@
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
 flask_testing==0.6.1
-coverage>=4.0.3
-nose>=1.3.7
-pluggy>=0.3.1
-py>=1.4.31
-randomize>=0.13
--- a/samples/openapi3/server/petstore/python-flask-python2/tox.ini
+++ b/samples/openapi3/server/petstore/python-flask-python2/tox.ini
@ -6,5 +6,4 @@ deps=-r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt

 commands=
-   nosetests \
-      []
+   pytest --cov=openapi_server
--- a/samples/openapi3/server/petstore/python-flask/.gitignore
+++ b/samples/openapi3/server/petstore/python-flask/.gitignore
@ -45,7 +45,9 @@ coverage.xml
 *,cover
 .hypothesis/
 venv/
+.venv/
 .python-version
+.pytest_cache

 # Translations
 *.mo
--- a/samples/openapi3/server/petstore/python-flask/requirements.txt
+++ b/samples/openapi3/server/petstore/python-flask/requirements.txt
@ -1,4 +1,7 @@
-connexion >= 2.0.2
+connexion >= 2.5.0; python_version>="3.6"
+connexion >= 2.3.0; python_version=="3.5"
+connexion >= 2.3.0; python_version=="3.4"
+connexion == 2.4.0; python_version<="2.7"
 swagger-ui-bundle >= 0.0.2
 python_dateutil >= 2.6.0
 setuptools >= 21.0.0
--- a/samples/openapi3/server/petstore/python-flask/test-requirements.txt
+++ b/samples/openapi3/server/petstore/python-flask/test-requirements.txt
@ -1,6 +1,4 @@
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
 flask_testing==0.6.1
-coverage>=4.0.3
-nose>=1.3.7
-pluggy>=0.3.1
-py>=1.4.31
-randomize>=0.13
--- a/samples/openapi3/server/petstore/python-flask/tox.ini
+++ b/samples/openapi3/server/petstore/python-flask/tox.ini
@ -6,5 +6,4 @@ deps=-r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt

 commands=
-   nosetests \
-      []
+   pytest --cov=openapi_server
--- a/samples/server/petstore/python-aiohttp/.gitignore
+++ b/samples/server/petstore/python-aiohttp/.gitignore
@ -0,0 +1,66 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*,cover
+.hypothesis/
+venv/
+.venv/
+.python-version
+.pytest_cache
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+#Ipython Notebook
+.ipynb_checkpoints
--- a/samples/server/petstore/python-aiohttp/dev-requirements.txt
+++ b/samples/server/petstore/python-aiohttp/dev-requirements.txt
@ -0,0 +1,2 @@
+tox
+flake8
--- a/samples/server/petstore/python-aiohttp/pom.xml
+++ b/samples/server/petstore/python-aiohttp/pom.xml
@ -27,7 +27,7 @@
                <version>1.2.1</version>
                <executions>
                    <execution>
-                        <id>pytest-test</id>
+                        <id>test</id>
                        <phase>integration-test</phase>
                        <goals>
                            <goal>exec</goal>
--- a/samples/server/petstore/python-aiohttp/test-requirements.txt
+++ b/samples/server/petstore/python-aiohttp/test-requirements.txt
@ -1,6 +1,4 @@
-coverage>=4.0.3
-pytest>=1.3.7
-pluggy>=0.3.1
-py>=1.4.31
-randomize>=0.13
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
 pytest-aiohttp>=0.3.0
--- a/samples/server/petstore/python-aiohttp/test_python3.sh
+++ b/samples/server/petstore/python-aiohttp/test_python3.sh
@ -1,8 +1,7 @@
 #!/bin/bash

-REQUIREMENTS_FILE=requirements.txt
-TEST_REQUIREMENTS_FILE=test-requirements.txt
-REQUIREMENTS_OUT=requirements.txt.log
+REQUIREMENTS_FILE=dev-requirements.txt
+REQUIREMENTS_OUT=dev-requirements.txt.log
 SETUP_OUT=*.egg-info
 VENV=.venv
 DEACTIVE=false
@ -18,10 +17,10 @@ if [ -z "$VIRTUAL_ENV" ]; then
 fi

 ### install dependencies
-pip install -r $REQUIREMENTS_FILE -r $TEST_REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT
+pip install -r $REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT

 ### run tests
-pytest || exit 1
+tox || exit 1

 ### static analysis of code
 flake8 --show-source petstore_api/
--- a/samples/server/petstore/python-aiohttp/tox.ini
+++ b/samples/server/petstore/python-aiohttp/tox.ini
@ -0,0 +1,10 @@
+[tox]
+envlist = py3
+skipsdist=True
+
+[testenv]
+deps=-r{toxinidir}/requirements.txt
+     -r{toxinidir}/test-requirements.txt
+
+commands=
+   pytest --cov=openapi_server
--- a/samples/server/petstore/python-blueplanet/.openapi-generator/VERSION
+++ b/samples/server/petstore/python-blueplanet/.openapi-generator/VERSION
@ -1 +1 @@
-4.0.0
+4.2.3-SNAPSHOT
--- a/samples/server/petstore/python-blueplanet/app/.gitignore
+++ b/samples/server/petstore/python-blueplanet/app/.gitignore
@ -46,6 +46,7 @@ coverage.xml
 .hypothesis/
 venv/
 .python-version
+.pytest_cache

 # Translations
 *.mo
--- a/samples/server/petstore/python-blueplanet/app/test-requirements.txt
+++ b/samples/server/petstore/python-blueplanet/app/test-requirements.txt
@ -1,6 +1,4 @@
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
 flask_testing==0.6.1
-coverage>=4.0.3
-nose>=1.3.7
-pluggy>=0.3.1
-py>=1.4.31
-randomize>=0.13
--- a/samples/server/petstore/python-blueplanet/app/tox.ini
+++ b/samples/server/petstore/python-blueplanet/app/tox.ini
@ -6,5 +6,4 @@ deps=-r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt

 commands=
-   nosetests \
-      []
+   pytest --cov=openapi_server
--- a/samples/server/petstore/python-flask-python2/.gitignore
+++ b/samples/server/petstore/python-flask-python2/.gitignore
@ -45,7 +45,9 @@ coverage.xml
 *,cover
 .hypothesis/
 venv/
+.venv/
 .python-version
+.pytest_cache

 # Translations
 *.mo
--- a/samples/server/petstore/python-flask-python2/dev-requirements.txt
+++ b/samples/server/petstore/python-flask-python2/dev-requirements.txt
@ -0,0 +1,2 @@
+tox
+flake8
--- a/samples/server/petstore/python-flask-python2/pom.xml
+++ b/samples/server/petstore/python-flask-python2/pom.xml
@ -27,7 +27,7 @@
                <version>1.2.1</version>
                <executions>
                    <execution>
-                        <id>nose-test</id>
+                        <id>test</id>
                        <phase>integration-test</phase>
                        <goals>
                            <goal>exec</goal>
--- a/samples/server/petstore/python-flask-python2/requirements.txt
+++ b/samples/server/petstore/python-flask-python2/requirements.txt
@ -1,4 +1,7 @@
-connexion >= 2.0.2
+connexion >= 2.5.0; python_version>="3.6"
+connexion >= 2.3.0; python_version=="3.5"
+connexion >= 2.3.0; python_version=="3.4"
+connexion == 2.4.0; python_version<="2.7"
 swagger-ui-bundle >= 0.0.2
 python_dateutil >= 2.6.0
 typing >= 3.5.2.2
--- a/samples/server/petstore/python-flask-python2/test-requirements.txt
+++ b/samples/server/petstore/python-flask-python2/test-requirements.txt
@ -1,6 +1,4 @@
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
 flask_testing==0.6.1
-coverage>=4.0.3
-nose>=1.3.7
-pluggy>=0.3.1
-py>=1.4.31
-randomize>=0.13
--- a/samples/server/petstore/python-flask-python2/test_python2.sh
+++ b/samples/server/petstore/python-flask-python2/test_python2.sh
@ -1,7 +1,7 @@
 #!/bin/bash

-REQUIREMENTS_FILE=test-requirements.txt
-REQUIREMENTS_OUT=test-requirements.txt.log
+REQUIREMENTS_FILE=dev-requirements.txt
+REQUIREMENTS_OUT=dev-requirements.txt.log
 SETUP_OUT=*.egg-info
 VENV=.venv
 DEACTIVE=false
@ -18,10 +18,9 @@ fi

 ### install dependencies
 pip install -r $REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT
-python setup.py develop

 ### run tests
-tox || exit 1
+tox -e py27 || exit 1

 ### static analysis of code
 flake8 --show-source petstore_api/
--- a/samples/server/petstore/python-flask-python2/tox.ini
+++ b/samples/server/petstore/python-flask-python2/tox.ini
@ -6,5 +6,4 @@ deps=-r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt

 commands=
-   nosetests \
-      []
+   pytest --cov=openapi_server
--- a/samples/server/petstore/python-flask/.gitignore
+++ b/samples/server/petstore/python-flask/.gitignore
@ -45,7 +45,9 @@ coverage.xml
 *,cover
 .hypothesis/
 venv/
+.venv/
 .python-version
+.pytest_cache

 # Translations
 *.mo
--- a/samples/server/petstore/python-flask/dev-requirements.txt
+++ b/samples/server/petstore/python-flask/dev-requirements.txt
@ -0,0 +1,2 @@
+tox
+flake8
--- a/samples/server/petstore/python-flask/pom.xml
+++ b/samples/server/petstore/python-flask/pom.xml
@ -27,7 +27,7 @@
                <version>1.2.1</version>
                <executions>
                    <execution>
-                        <id>nose-test</id>
+                        <id>test</id>
                        <phase>integration-test</phase>
                        <goals>
                            <goal>exec</goal>
--- a/samples/server/petstore/python-flask/requirements.txt
+++ b/samples/server/petstore/python-flask/requirements.txt
@ -1,4 +1,7 @@
-connexion >= 2.0.2
+connexion >= 2.5.0; python_version>="3.6"
+connexion >= 2.3.0; python_version=="3.5"
+connexion >= 2.3.0; python_version=="3.4"
+connexion == 2.4.0; python_version<="2.7"
 swagger-ui-bundle >= 0.0.2
 python_dateutil >= 2.6.0
 setuptools >= 21.0.0
--- a/samples/server/petstore/python-flask/test-requirements.txt
+++ b/samples/server/petstore/python-flask/test-requirements.txt
@ -1,6 +1,4 @@
+pytest~=4.6.7 # needed for python 2.7+3.4
+pytest-cov>=2.8.1
+pytest-randomly==1.2.3 # needed for python 2.7+3.4
 flask_testing==0.6.1
-coverage>=4.0.3
-nose>=1.3.7
-pluggy>=0.3.1
-py>=1.4.31
-randomize>=0.13
--- a/samples/server/petstore/python-flask/test_python3.sh
+++ b/samples/server/petstore/python-flask/test_python3.sh
@ -1,7 +1,7 @@
 #!/bin/bash

-REQUIREMENTS_FILE=test-requirements.txt
-REQUIREMENTS_OUT=test-requirements.txt.log
+REQUIREMENTS_FILE=dev-requirements.txt
+REQUIREMENTS_OUT=dev-requirements.txt.log
 SETUP_OUT=*.egg-info
 VENV=.venv
 DEACTIVE=false
@ -18,7 +18,6 @@ fi

 ### install dependencies
 pip install -r $REQUIREMENTS_FILE | tee -a $REQUIREMENTS_OUT
-python setup.py develop

 ### run tests
 tox || exit 1
--- a/samples/server/petstore/python-flask/tox.ini
+++ b/samples/server/petstore/python-flask/tox.ini
@ -6,5 +6,4 @@ deps=-r{toxinidir}/requirements.txt
     -r{toxinidir}/test-requirements.txt

 commands=
-   nosetests \
-      []
+   pytest --cov=openapi_server