# Example Code Runner (Python) (`apify/example-code-runner-python`) Actor

Python Actor to run code examples from the documentation via "Run on Apify" links.

- **URL**: https://apify.com/apify/example-code-runner-python.md
- **Developed by:** [Apify](https://apify.com/apify) (Apify)
- **Categories:** Automation, Open source
- **Features:** Limited permissions
- **Stats:** 1,819 total users, 110 monthly users, 93.6% runs succeeded, 2 bookmarks
- **User rating**: 4.47 out of 5 stars

## Pricing

Pay per usage

This Actor is paid per platform usage. The Actor is free to use, and you only pay for the Apify platform usage, which gets cheaper the higher subscription plan you have.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-usage

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## Example Code Runner (Python)

The Actor behind the **"Run on Apify"** buttons in Python documentation, such as [crawlee.dev/python](https://crawlee.dev/python) and [docs.apify.com](https://docs.apify.com). It takes a Python snippet as input and runs it, so a single Actor can execute code samples from both the Apify SDK and Crawlee.

### Input

| Field  | Type   | Description |
| ------ | ------ | ----------- |
| `code` | string | Python code to execute. Must define a `main` function (sync or async). |

```json
{
  "code": "async def main() -> None:\n    print('Hello world!')\n"
}
```

If the snippet uses `Actor`, the runner hands over its own Actor context so the code can manage its lifecycle (SDK examples create their own context; Crawlee examples don't).

### Run locally

This is a [uv](https://docs.astral.sh/uv/)-managed project. You'll also need the [Apify CLI](https://docs.apify.com/cli/docs/installation).

```bash
uv sync
apify run -i '{"code": "async def main() -> None:\n    print(\"hi\")\n"}'
```

### Deploy to Apify

```bash
apify login            # once, with your API token
apify push             # build and deploy the Actor
```

# Actor input Schema

## `code` (type: `string`):

Code to be executed

## Actor input object example

```json
{
  "code": "async def main() -> None:\n    print('Hello world!')\n"
}
```

# Actor output Schema

## `results` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "code": `async def main() -> None:
    print('Hello world!')`
};

// Run the Actor and wait for it to finish
const run = await client.actor("apify/example-code-runner-python").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "code": """async def main() -> None:
    print('Hello world!')
""" }

# Run the Actor and wait for it to finish
run = client.actor("apify/example-code-runner-python").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "code": "async def main() -> None:\\n    print('\''Hello world!'\'')\\n"
}' |
apify call apify/example-code-runner-python --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,apify/example-code-runner-python"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/HH9rhkFXiZbheuq1V/builds/fNwclkmltexLwMWN6/openapi.json