# {py:mod}`physpyx.context`

```{py:module} physpyx.context
```

```{autodoc2-docstring} physpyx.context
:allowtitles:
```

## Module Contents

### Classes

````{list-table}
:class: autosummary longtable
:align: left

* - {py:obj}`SiunitxContext <physpyx.context.SiunitxContext>`
  -
* - {py:obj}`NuclearContext <physpyx.context.NuclearContext>`
  -
````

### API

`````{py:class} SiunitxContext(name: str | None = None, aliases: tuple[str, ...] = tuple(), defaults: dict[str, typing.Any] | None = None)
:canonical: physpyx.context.SiunitxContext

Bases: {py:obj}`pint.facets.context.Context`

````{py:attribute} preferred_units
:canonical: physpyx.context.SiunitxContext.preferred_units
:type: dict[pint.facets.plain.objects.UnitsContainer, str]
:value: >
   None

```{autodoc2-docstring} physpyx.context.SiunitxContext.preferred_units
```

````

`````

```{py:class} NuclearContext(preferred_units: bool = True)
:canonical: physpyx.context.NuclearContext

Bases: {py:obj}`physpyx.context.SiunitxContext`

```