[vishnudeva]

I think my answer: I have no idea what multi-line lambdas are, probably explains why I find Reflex (or Rio/Streamlit, etc) amazing, haha

For a person with zero front-end knowledge, it's a game changer.

[greener_grass]

In JavaScript you can do this:

    const f = (x, y) => {
      const z = x + y;
      const w = z * 2;
      return z - w + x;
    };

In Python, you cannot do this:

    f = (
      lambda x, y:
        z = x + y;
        w = z * 2;
        return z - w + x;
    )

Instead, you need to pull it out into a def:

    def f(x, y):
      z = x + y;
      w = z * 2;
      return z - w + x;

Sometimes, this is no big deal. But other times, it's damn annoying; the language forces you to lay out your code in a less intuitive way for no obvious benefit.

[skeledrew]

Actually you can. If you really want a multi-line lambda with your example...

```f = lambda x, y: [ z := x + y, w := z 2, z - w + x, ][-1]```

* That version does look strange, as it uses a list in order to get that last calculation. But I often use lambdas to check results in parametrized tests, and they naturally spread to multiple lines without the list hack since they're chains of comparisons.

[vishnudeva]

Ah I see! Thanks for elaborating! :)