# Column

> Stacks children vertically. A native Pyzed component for Python desktop GUIs, with a live preview, code examples and its API.

Source: https://albakore.github.io/pyzed/library/column/

:::tip[In plain words]
Puts things one under the other, from top to bottom.
:::

Stacks its children vertically, with `spacing`, `padding`, `align` on the cross axis and an optional `max_width`. Like `row`, nested lists are flattened and `None`/`False` are ignored.

`pz.column` · Category: [Layout](https://albakore.github.io/pyzed/library/#layout) · [Full reference →](https://albakore.github.io/pyzed/reference/widgets/#column)

**Code:**

```python
box = lambda text, w=90, h=44: pz.container(ui.label(text), center=True, width=w, height=h, bg=pz.theme.current().element, radius=6)
pz.row([
    pz.column([box("1"), box("2"), box("3")], spacing=8),
    pz.column([box("wide", w=160), box("center"), box("end")], spacing=8, align="center"),
    pz.column([box("top"), pz.vspace(), box("bottom")], spacing=8, height=170),
], spacing=32)
```

## When to use

- For forms, lists, page content and most `view()` roots.

## Usage

```python
import pyzed as pz
from pyzed import ui

box = lambda text, w=90, h=44: pz.container(ui.label(text), center=True, width=w, height=h, bg=pz.theme.current().element, radius=6)
pz.row([
    pz.column([box("1"), box("2"), box("3")], spacing=8),
    pz.column([box("wide", w=160), box("center"), box("end")], spacing=8, align="center"),
    pz.column([box("top"), pz.vspace(), box("bottom")], spacing=8, height=170),
], spacing=32)
```

## Variants

:::note[About these captures]
Each capture is recorded by pyzed itself, off-screen at 2x, in One Dark or One Light to match this site's theme, and cropped to the component so it shows at its real size. The pointer hovers, presses or types into it; a component that does not react to the pointer cycles through a few themes. With reduced motion you see the first frame. Open **Code** under a capture to see the snippet that draws it; free names such as `on_save` stand for your own callbacks.
:::

### Cross-axis alignment

```python
box = lambda text, w=90, h=44: pz.container(ui.label(text), center=True, width=w, height=h, bg=pz.theme.current().element, radius=6)
pz.column([box("wide", w=160), box("B"), box("C")], spacing=8, align="start")
```

```python
box = lambda text, w=90, h=44: pz.container(ui.label(text), center=True, width=w, height=h, bg=pz.theme.current().element, radius=6)
pz.column([box("wide", w=160), box("B"), box("C")], spacing=8, align="center")
```

```python
box = lambda text, w=90, h=44: pz.container(ui.label(text), center=True, width=w, height=h, bg=pz.theme.current().element, radius=6)
pz.column([box("wide", w=160), box("B"), box("C")], spacing=8, align="end")
```

### Options

```python
box = lambda text, w=90, h=44: pz.container(ui.label(text), center=True, width=w, height=h, bg=pz.theme.current().element, radius=6)
pz.column([box("1"), box("2")], spacing=16)
```

```python
box = lambda text, w=90, h=44: pz.container(ui.label(text), center=True, width=w, height=h, bg=pz.theme.current().element, radius=6)
pz.column([box("top"), pz.vspace(), box("bottom")], height=170)
```

```python
box = lambda text, w=90, h=44: pz.container(ui.label(text), center=True, width=w, height=h, bg=pz.theme.current().element, radius=6)
pz.container(pz.column([box("1"), box("2")], spacing=8, padding=16),
             border_color=pz.theme.current().border, border_width=1, radius=8)
```

## Events

Column has no events of its own: it shows what you give it. Like every widget it also has the **18 common events** (`click`, `double_click`, `right_click`, `mouse_enter`, `drag`, `key_down`, `resize`…), attached with `.on(...)`: see [Events](https://albakore.github.io/pyzed/guides/events/) and [Events of every component](https://albakore.github.io/pyzed/library/events/).

## Properties and API

### `pz.column`

```python
column(
    children=None,
    *,
    spacing=0.0,
    padding=None,
    width=None,
    height=None,
    align=None,
    max_width=None,
    clip=False,
)
```

Stacks its children vertically.

| Property | Default | Description |
| --- | --- | --- |
| `children` | `None` | List of children. Nested lists are flattened and `None` and `False` are ignored, so you can write `cond and widget`. |
| `spacing` | `0.0` | Space between children, in pixels. |
| `padding` | `None` | Inner padding: `8`, `(vertical, horizontal)` or `(top, right, bottom, left)`. |
| `width` | `None` | Width: pixels, `"fill"`, `"shrink"` or `"fill:N"` (proportion). |
| `height` | `None` | Height: pixels, `"fill"`, `"shrink"` or `"fill:N"` (proportion). |
| `align` | `None` | Alignment of the children on the cross axis: `"start"`, `"center"` or `"end"`. |
| `max_width` | `None` | Maximum width in pixels. |
| `clip` | `False` | Clips content that overflows the bounds. |

[Full reference →](https://albakore.github.io/pyzed/reference/widgets/#column)

## Related

- [Row](https://albakore.github.io/pyzed/library/row/): Lays out children horizontally.
- [Scrollable](https://albakore.github.io/pyzed/library/scrollable/): Scrolls content that doesn't fit.
- [Space](https://albakore.github.io/pyzed/library/spacing/): Fixed gaps and flexible spacers.