yer a wizard - making your own custom %%cellmagics for colab notebooks

 

 

## Dive into the Magic of Jupyter %%cellmagic! ✨📚

Hey there, fellow data enthusiasts! 👋 Today, let's dive into the fascinating world of Jupyter's `%%cellmagic` 🪄. This little-known feature can supercharge your Jupyter Notebook workflow! 🚀💡

### What's `%%cellmagic`? 🧙‍♂️✨

In the Jupyter ecosystem, `%magic` and `%%cellmagic` commands add special functionalities to your notebook cells. Think of them as magical commands that can transform how your cells behave! 🌟 For example, `%%time` can measure the execution time of a cell. But what if you want to create your own custom magic? That's where `%%cellmagic` shines! 💥

### Example: Create Your Own Cell Magic 🛠️🔮

Let's say you want to create a custom magic that processes a cell in a specific way. Here's a simple example to get you started:

```python
from IPython.core.magic import (Magics, magics_class, cell_magic, needs_local_scope)

@magics_class
class class_mycellmagic(Magics):

    @needs_local_scope
    @cell_magic
    def mycellmagic(self, line, cell=None, local_ns=None):
        # line is whatever comes after "%%mycellmagic" in the same line
        # cell is whatever comes below
        # custom behavior...
        print(f"Line: {line}")
        print("Cell content:")
        exec(cell, local_ns)
        

def load_ipython_extension(ip):
    """Load the extension in IPython."""
    ip.register_magics(class_mycellmagic)
```

#### Breakdown 🛠️🧩

1. **Import the magic tools** 🪄: We import necessary decorators and classes from `IPython.core.magic`.
2. **Define a magic class** 🎩: We create a class `class_mycellmagic` that inherits from `Magics`.
3. **Decorate with `@cell_magic`** 🌟: We define a method `module` and decorate it with `@cell_magic`. This method will handle our custom magic.
4. **Process the cell** 📝: Inside the method, we can process the `line` (text after `%%mycellmagic`) and `cell` (content below).
5. **Register the magic** 📋: Finally, we define `load_ipython_extension` to register our custom magic with IPython.

### Using Your Magic 🪄✨

To use this magic in your notebook, you need to load it first. Add this to a cell and run it:

```python
%load_ext your_module_name  # replace with your actual module name containg mycellmagic
```

Then, you can use your custom magic like this:

```python
%%mycellmagic some_line_argument
print("Hello from the custom cell magic!")
```

### Wrap Up 🎁🎉

That's it! You've just created a custom `%%mycellmagic` for Jupyter Notebooks! 🎓 Now you can tailor your notebooks to fit your specific needs and workflows. Happy coding! 👩‍💻👨‍💻💖

Stay magical, Jupyter wizards! 🧙‍♀️🧙‍♂️✨

 

 

interactive example

https://colab.research.google.com/drive/1TTUcqLKYDy-m7z0wYJ7wolAtic0GJU_y