> ## Documentation Index
> Fetch the complete documentation index at: /docs/llms.txt
> Use this file to discover all available pages before exploring further.

# __init__

# `prefect.types`

## Functions

### `check_variable_value` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/types/\_\_init\_\_.py#L136](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/types/__init__.py#L136)</sup>

```python theme={null}
check_variable_value(value: object) -> object
```

### `cast_none_to_empty_dict` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/types/\_\_init\_\_.py#L156](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/types/__init__.py#L156)</sup>

```python theme={null}
cast_none_to_empty_dict(value: Any) -> dict[str, Any]
```

### `validate_set_T_from_delim_string` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/types/\_\_init\_\_.py#L178](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/types/__init__.py#L178)</sup>

```python theme={null}
validate_set_T_from_delim_string(value: Union[str, T, set[T], None], type_: Any, delim: str | None = None) -> set[T]
```

"no-info" before validator useful in scooping env vars

e.g. `PREFECT_CLIENT_RETRY_EXTRA_CODES=429,502,503` -> `{429, 502, 503}`
e.g. `PREFECT_CLIENT_RETRY_EXTRA_CODES=429` -> `{429}`

### `parse_retry_delay_input` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/types/\_\_init\_\_.py#L212](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/types/__init__.py#L212)</sup>

```python theme={null}
parse_retry_delay_input(value: Any) -> Any
```

Parses various inputs (string, int, float, list) into a format suitable
for TaskRetryDelaySeconds (int, float, list\[float], or None).
Handles comma-separated strings for lists of delays.

### `convert_none_to_empty_dict` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/types/\_\_init\_\_.py#L263](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/types/__init__.py#L263)</sup>

```python theme={null}
convert_none_to_empty_dict(v: Optional[KeyValueLabels]) -> KeyValueLabels
```

## Classes

### `SecretDict` <sup>[https://github.com/PrefectHQ/prefect/blob/main/src/prefect/types/\_\_init\_\_.py#L174](https://github.com/PrefectHQ/prefect/blob/main/src/prefect/types/__init__.py#L174)</sup>