when

Classes:

When	Boolean expression composition utility class that encodes logic for when job metadata (e.g., param hidden state) should be True or False based on the state of a job.

class When

Boolean expression composition utility class that encodes logic for when job metadata (e.g., param hidden state) should be True or False based on the state of a job.

Examples

Values for expr for various common cases:

When param foo is truthy:

"foo"

When param foo equals 42:

{"op": "==", "param": "foo", "value": 42}

When param bar is in the list [1, 2, 3]:

{"op": "in", "param": "bar", "value": [1, 2, 3]}

When input connection “particles” is present:

{"connection": "particles"}

When param foo equals 42 AND input connection “particles” is present:

{"op": "and", "left": {"op": "==", "param": "foo", "value": 42}, "right": {"connection": "particles"}}

Attributes:

expr	Logical expression encoded as a dictionary or a string (param name).

expr: str | Dict[str, Any]

Logical expression encoded as a dictionary or a string (param name).