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Pyodide¤

Insiders 1.0.0

This special pyodide fence uses Pyodide, Ace and Highlight.js to render an interactive Python editor. Everything runs on the client side. The first time Pyodide is loaded by the browser can be a bit long, but then it will be cached and the next time you load the page it will be much faster.

Click the Run button in the top-right corner, or hit Ctrl+Enter to run the code. You can install packages with Micropip:

Editor (session: default) Run
import micropip

print("Installing cowsay...")
await micropip.install("cowsay")
print("done!")
Output Clear

```pyodide
import micropip

print("Installing cowsay...")
await micropip.install("cowsay")
print("done!")
```

Then you can import and use the packages you installed:

Editor (session: default) Run
import cowsay
cowsay.cow("Hello World")
Output Clear

```pyodide
import cowsay
cowsay.cow("Hello World")
```

Packages installed with Micropip are cached by the browser as well, making future installations much faster.

Sessions¤

Editors with the same session share the same globals() dictionary, so you can reuse variables, classes, imports, etc., from another editor within the same session. This is why you can import cowsay in this editor, given you actually installed it in the first. Sessions are ephemeral: everything is reset when reloading the page. This means you cannot persist sessions across multiple pages. Try refreshing your page and running the code of the second editor: you should get a ModuleNotFoundError.

To use other sessions, simply pass the session="name" option to the code block:

Editor (session: something) Run
something = "hello"
Output Clear

```pyodide session="something"
something = "hello"
```

Now lets print it in another editor with the same session:

Editor (session: something) Run
print(something)
Output Clear

```pyodide session="something"
print(something)
```

And in another editor with the default session:

Editor (session: default) Run
print(something)
Output Clear

```pyodide
print(something)
```

Pre-installing packages¤

In your own documentation pages, you might not want to add import micropip; await micropip.install("your-package") to every editor to show how to use your package. In this case, you can use the install option to pre-install packages. The option takes a list of comma-separated package distribution names:

Editor (session: default) Run
import griffe
import dependenpy
print("OK!")
Output Clear

```pyodide install="griffe,dependenpy"
import griffe
import dependenpy
print("OK!")
```

Excluding assets¤

When you add a Pyodide fence to a page, Markdown Exec will inject <script> and <link> tags to load Javascript and CSS assets. If you add multiple Pyodide fences to the same page, the same assets will be included many times. The browser is clever enough not to re-download them everytime (they are cached), but we can still avoid re-injecting assets to make the HTML page smaller and faster.

```pyodide assets="no"
print("hello")
```

Make sure that at least one Pyodide fence per page injects the assets.

Editor themes¤

The editor provided by Ace supports different color themes. The complete list can be found here: https://github.com/ajaxorg/ace/tree/master/src/theme.

To use a specific theme for both light and dark schemes, use the theme option on the Pyodide code block:

```pyodide theme="ambiance"
print("hello")
```

To specify different themes for the light and dark schemes, separate them with a comma:

```pyodide theme="ambiance,chaos"
print("hello")
```

See all previews below.

ambiance¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

chaos¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

chrome¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

cloud9_day¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

cloud9_night¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

cloud9_night_low_color¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

cloud_editor¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

cloud_editor_dark¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

clouds¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

clouds_midnight¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

cobalt¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

crimson_editor¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

dawn¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

dracula¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

dreamweaver¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

eclipse¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

github¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

github_dark¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

gob¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

gruvbox¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

gruvbox_dark_hard¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

gruvbox_light_hard¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

idle_fingers¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

iplastic¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

katzenmilch¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

kr_theme¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

kuroir¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

merbivore¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

merbivore_soft¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

mono_industrial¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

monokai¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

nord_dark¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

one_dark¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

pastel_on_dark¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

solarized_dark¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

solarized_light¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

sqlserver¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

terminal¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

textmate¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

tomorrow¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

tomorrow_night¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

tomorrow_night_blue¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

tomorrow_night_bright¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

tomorrow_night_eighties¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

twilight¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

vibrant_ink¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear

xcode¤

Editor (session: default) Run
from typing import Iterator

# This is an example
class Math:
    @staticmethod
    def fib(n: int) -> Iterator[int]:
        """Fibonacci series up to n."""
        a, b = 0, 1
        while a < n:
            yield a
            a, b = b, a + b

result = sum(Math.fib(42))
print(f"The answer is {result}")
Output Clear