diff --git a/astro.config.mjs b/astro.config.mjs
index 3d6f086..e721ca8 100644
--- a/astro.config.mjs
+++ b/astro.config.mjs
@@ -1,16 +1,31 @@
 import { defineConfig } from "astro/config";
+import { viteStaticCopy } from "vite-plugin-static-copy";
+import { createLogger } from "vite";
 
 import mdx from "@astrojs/mdx";
 import svelte from "@astrojs/svelte";
 import tailwind from "@astrojs/tailwind";
 import icon from "astro-icon";
 
+const logger = createLogger();
+const loggerWarn = logger.warn;
+
+logger.warn = (msg, options) => {
+  // Ignore warnings from pyodide distribution
+  if (msg.includes("/public/pyodide/")) return;
+  loggerWarn(msg, options);
+};
+
 // https://astro.build/config
 export default defineConfig({
   site: "https://x0k.github.io",
   base: "/ppp",
   integrations: [tailwind(), icon(), mdx(), svelte()],
   vite: {
+    customLogger: logger,
+    optimizeDeps: {
+      exclude: ["pyodide"],
+    },
     assetsInclude: ["**/*.wasm"],
     build: {
       rollupOptions: {
@@ -20,7 +35,16 @@ export default defineConfig({
         },
       },
     },
-    plugins: [],
+    plugins: [
+      viteStaticCopy({
+        targets: [
+          {
+            src: "node_modules/pyodide/*.*",
+            dest: "./assets/pyodide",
+          },
+        ],
+      }),
+    ],
   },
   markdown: {
     shikiConfig: {
diff --git a/bun.lockb b/bun.lockb
index 4180276..9ee446a 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/package.json b/package.json
index 0437091..8903e12 100644
--- a/package.json
+++ b/package.json
@@ -19,6 +19,7 @@
     "astro-icon": "^1.1.0",
     "fast-deep-equal": "^3.1.3",
     "monaco-editor": "^0.49.0",
+    "pyodide": "^0.26.0",
     "tailwindcss": "^3.4.3",
     "typescript": "^5.4.5"
   },
@@ -29,6 +30,7 @@
     "@types/color": "^3.0.6",
     "color": "^4.2.3",
     "daisyui": "^4.11.1",
-    "svelte": "5.0.0-next.133"
+    "svelte": "5.0.0-next.133",
+    "vite-plugin-static-copy": "^1.0.5"
   }
 }
diff --git a/src/adapters/monaco.ts b/src/adapters/monaco.ts
index 3caae2c..fd5b1eb 100644
--- a/src/adapters/monaco.ts
+++ b/src/adapters/monaco.ts
@@ -3,4 +3,6 @@ import { Language } from "@/lib/testing";
 export const MONACO_LANGUAGE_ID: Record<Language, string> = {
   [Language.PHP]: "php",
   [Language.TypeScript]: "typescript",
+  [Language.JavaScript]: "javascript",
+  [Language.Python]: "python",
 };
diff --git a/src/content/design-patterns/factory/editor.svelte b/src/content/design-patterns/factory/editor.svelte
index cc434c0..81c3bde 100644
--- a/src/content/design-patterns/factory/editor.svelte
+++ b/src/content/design-patterns/factory/editor.svelte
@@ -7,11 +7,13 @@
   import { testCases, CaseType, type Inputs, type Outputs, CASE_TYPES } from './test-cases'
   import { testRunnerFactories as phpTestRunnerFactories } from './php/test-runners'
   import { tsTestRunnerFactories, jsTestRunnerFactories } from './js/test-runners'
+  import { testRunnerFactories as pyTestRunnerFactories } from './python/test-runners'
 
   const INITIAL_VALUES: Record<Language, Promise<string>> = {
     [Language.PHP]: import('./php/code.php?raw').then(m => m.default),
     [Language.TypeScript]: import('./js/code.ts?raw').then(m => m.default),
     [Language.JavaScript]: import('./js/code.js?raw').then(m => m.default),
+    [Language.Python]: import('./python/code.py?raw').then(m => m.default),
   }
 
   const CASES_FACTORIES: Record<Language, () => TestCasesStates<CaseType, Inputs, Outputs>> = {
@@ -36,13 +38,20 @@
       testCase: testCases[id],
       testRunner: jsTestRunnerFactories[id],
     })) as TestCasesStates<CaseType, Inputs, Outputs>,
+    [Language.Python]: () => CASE_TYPES.map(id => ({
+      id,
+      isRunning: false,
+      lastTestId: -1,
+      testCase: testCases[id],
+      testRunner: pyTestRunnerFactories[id],
+    })) as TestCasesStates<CaseType, Inputs, Outputs>,
   }
   const defaultLanguage = Language.PHP;
 </script>
 
 <Editor
   {defaultLanguage}
-  languages={[Language.PHP, Language.TypeScript, Language.JavaScript]}
+  languages={Object.keys(CASES_FACTORIES) as Language[]}
   onLanguageChange={async (lang, model) => {
     model.setValue(await INITIAL_VALUES[lang])
   }}
diff --git a/src/content/design-patterns/factory/js/code.ts b/src/content/design-patterns/factory/js/code.ts
index 6f36021..dd504b2 100644
--- a/src/content/design-patterns/factory/js/code.ts
+++ b/src/content/design-patterns/factory/js/code.ts
@@ -4,6 +4,12 @@ const enum PaymentSystemType {
   CatBank = "cat-bank",
 }
 
+
+
+
+
+
+
 export function case1(
   type: PaymentSystemType,
   base: number,
@@ -12,6 +18,10 @@ export function case1(
   throw new Error("Not implemented");
 }
 
+const enum PaymentSystemActionType {
+  Payment = "payment",
+  Payout = "payout",
+}
 
 
 
@@ -19,13 +29,6 @@ export function case1(
 
 
 
-
-
-const enum PaymentSystemActionType {
-  Payment = "payment",
-  Payout = "payout",
-}
-
 export function case2(
   type: PaymentSystemType,
   base: number,
diff --git a/src/content/design-patterns/factory/python/code.py b/src/content/design-patterns/factory/python/code.py
new file mode 100644
index 0000000..adf681b
--- /dev/null
+++ b/src/content/design-patterns/factory/python/code.py
@@ -0,0 +1,38 @@
+from enum import Enum
+
+class PaymentSystemType(Enum):
+  PAYPAL = "paypal"
+  WEBMONEY = "webmoney"
+  CAT_BANK = "cat-bank"
+
+
+
+
+
+
+
+def case1(
+  type: PaymentSystemType,
+  base: int,
+  amount: int
+) -> int:
+  raise NotImplementedError
+
+class PaymentSystemActionType(Enum):
+  PAYMENT = "payment"
+  PAYOUT = "payout"
+
+
+
+
+
+
+
+
+def case2(
+  type: PaymentSystemType,
+  base: int,
+  action: PaymentSystemActionType,
+  amount: int
+) -> int:
+  raise NotImplementedError
\ No newline at end of file
diff --git a/src/content/design-patterns/factory/python/test-runners.ts b/src/content/design-patterns/factory/python/test-runners.ts
new file mode 100644
index 0000000..6cc0e1a
--- /dev/null
+++ b/src/content/design-patterns/factory/python/test-runners.ts
@@ -0,0 +1,40 @@
+import type { TestRunnerFactory } from "@/lib/testing";
+import { PyTestRunner, pyRuntimeFactory } from "@/lib/testing/python";
+
+import {
+  type SimpleTestInput,
+  type ComplexTestInput,
+  CaseType,
+  type Inputs,
+  type Outputs,
+} from "../test-cases";
+
+class SimpleTestRunner extends PyTestRunner<SimpleTestInput, number> {
+  protected caseExecutionCode({
+    paymentSystem,
+    base,
+    amount,
+  }: SimpleTestInput): string {
+    return `case1("${paymentSystem}", ${base}, ${amount})`;
+  }
+}
+
+class ComplexTestRunner extends PyTestRunner<ComplexTestInput, number> {
+  protected caseExecutionCode({
+    paymentSystem,
+    base,
+    action,
+    amount,
+  }: ComplexTestInput): string {
+    return `case2("${paymentSystem}", ${base}, "${action}", ${amount})`;
+  }
+}
+
+export const testRunnerFactories: {
+  [k in CaseType]: TestRunnerFactory<Inputs[k], Outputs[k]>;
+} = {
+  [CaseType.Simple]: async (code: string) =>
+    new SimpleTestRunner(await pyRuntimeFactory(), code),
+  [CaseType.Complex]: async (code: string) =>
+    new ComplexTestRunner(await pyRuntimeFactory(), code),
+};
diff --git a/src/lib/testing/js/index.ts b/src/lib/testing/js/index.ts
index 01361c3..217dd13 100644
--- a/src/lib/testing/js/index.ts
+++ b/src/lib/testing/js/index.ts
@@ -1,2 +1,3 @@
+export * from "./model";
 export * from "./js-test-runner";
 export * from "./ts-test-runner";
diff --git a/src/lib/testing/js/js-test-runner.ts b/src/lib/testing/js/js-test-runner.ts
index 888862f..bac715e 100644
--- a/src/lib/testing/js/js-test-runner.ts
+++ b/src/lib/testing/js/js-test-runner.ts
@@ -11,7 +11,7 @@ export abstract class JsTestRunner<M, I, O> implements TestRunner<I, O> {
 
   async run(input: I): Promise<O> {
     const transformedCode = this.transformCode(this.code);
-    const m = await import(transformedCode);
+    const m = await import(/* @vite-ignore */ transformedCode);
     return this.executeTest(m, input);
   }
 
diff --git a/src/lib/testing/js/model.ts b/src/lib/testing/js/model.ts
new file mode 100644
index 0000000..e897135
--- /dev/null
+++ b/src/lib/testing/js/model.ts
@@ -0,0 +1 @@
+export { version as tsVersion } from "typescript";
diff --git a/src/lib/testing/languages.ts b/src/lib/testing/languages.ts
index 917498c..65f97dc 100644
--- a/src/lib/testing/languages.ts
+++ b/src/lib/testing/languages.ts
@@ -1,13 +1,17 @@
-import { version } from "typescript";
+import { tsVersion } from './js'
+import { version as phpVersion } from './php'
+import { version as pyVersion } from './python'
 
 export enum Language {
   PHP = "php",
+  Python = "python",
   TypeScript = "typescript",
   JavaScript = "javascript",
 }
 
 export const LANGUAGE_TITLE: Record<Language, string> = {
-  [Language.PHP]: "PHP 8.3",
-  [Language.TypeScript]: `TypeScript ${version}`,
+  [Language.PHP]: `PHP ${phpVersion}`,
+  [Language.TypeScript]: `TypeScript ${tsVersion}`,
+  [Language.Python]: `Python ${pyVersion}`,
   [Language.JavaScript]: "JavaScript",
 };
diff --git a/src/lib/testing/php/index.ts b/src/lib/testing/php/index.ts
index bbb9466..0cdc49e 100644
--- a/src/lib/testing/php/index.ts
+++ b/src/lib/testing/php/index.ts
@@ -1,3 +1,4 @@
+export * from "./model";
 export * from "./php-test-runner";
 export * from "./fail-safe-php";
 export * from "./php-runtime-factory";
diff --git a/src/lib/testing/php/model.ts b/src/lib/testing/php/model.ts
new file mode 100644
index 0000000..994324c
--- /dev/null
+++ b/src/lib/testing/php/model.ts
@@ -0,0 +1 @@
+export const version = "8.3";
diff --git a/src/lib/testing/php/php-runtime-factory.ts b/src/lib/testing/php/php-runtime-factory.ts
index 97ffc3e..c399488 100644
--- a/src/lib/testing/php/php-runtime-factory.ts
+++ b/src/lib/testing/php/php-runtime-factory.ts
@@ -1,3 +1,5 @@
-import { WebPHP } from '@php-wasm/web';
+import { WebPHP } from "@php-wasm/web";
 
-export const phpRuntimeFactory = () => WebPHP.loadRuntime('8.3')
+import { version } from "./model";
+
+export const phpRuntimeFactory = () => WebPHP.loadRuntime(version);
diff --git a/src/lib/testing/python/index.ts b/src/lib/testing/python/index.ts
new file mode 100644
index 0000000..496381b
--- /dev/null
+++ b/src/lib/testing/python/index.ts
@@ -0,0 +1,3 @@
+export * from './model'
+export * from './py-test-runner'
+export * from './py-runtime-factory'
diff --git a/src/lib/testing/python/model.ts b/src/lib/testing/python/model.ts
new file mode 100644
index 0000000..db57298
--- /dev/null
+++ b/src/lib/testing/python/model.ts
@@ -0,0 +1,5 @@
+// This is only package version, maybe we need it in the future
+// export { version } from "pyodide";
+
+// According to https://github.com/pyodide/pyodide/pull/4435
+export const version = "3.12.1";
diff --git a/src/lib/testing/python/py-runtime-factory.ts b/src/lib/testing/python/py-runtime-factory.ts
new file mode 100644
index 0000000..3049531
--- /dev/null
+++ b/src/lib/testing/python/py-runtime-factory.ts
@@ -0,0 +1,8 @@
+import { loadPyodide } from "pyodide";
+
+export const pyRuntimeFactory = () =>
+  loadPyodide({
+    indexURL: import.meta.env.DEV
+      ? undefined
+      : `${import.meta.env.BASE_URL}/assets/pyodide`,
+  });
diff --git a/src/lib/testing/python/py-test-runner.ts b/src/lib/testing/python/py-test-runner.ts
new file mode 100644
index 0000000..34b1a41
--- /dev/null
+++ b/src/lib/testing/python/py-test-runner.ts
@@ -0,0 +1,46 @@
+import { loadPyodide } from "pyodide";
+import type { PyProxy } from "pyodide/ffi";
+
+import type { TestRunner } from "../testing";
+
+function isPyProxy(obj: any): obj is PyProxy {
+  return typeof obj === "object" && obj;
+}
+
+export abstract class PyTestRunner<I, O> implements TestRunner<I, O> {
+  private proxies: PyProxy[] = [];
+
+  constructor(
+    protected readonly python: Awaited<ReturnType<typeof loadPyodide>>,
+    protected readonly code: string
+  ) {}
+
+  protected caseExecutionCode(input: I): string {
+    throw new Error("Not implemented");
+  }
+
+  protected transformCode(input: I): string {
+    return `${this.code}\n${this.caseExecutionCode(input)}`;
+  }
+
+  protected transformResult(result: any): O {
+    if (isPyProxy(result)) {
+      this.proxies.push(result);
+      return result.toJs({ pyproxies: this.proxies });
+    }
+    return result;
+  }
+
+  async run(inputIn: I): Promise<O> {
+    return this.transformResult(
+      await this.python.runPythonAsync(this.transformCode(inputIn))
+    );
+  }
+
+  [Symbol.dispose](): void {
+    for (const p of this.proxies) {
+      p.destroy();
+    }
+    this.proxies.length = 0;
+  }
+}