altair.Then#

class altair.Then(conditions, /)#

Utility class for when-then-otherwise conditions.

Represents the state after calling when().then().

This state is a valid condition on its own.

It can be further specified, via multiple chained when-then calls, or finalized with Then.otherwise().

References

polars.when

__init__(conditions, /)#

Methods

__init__(conditions, /)

copy([deep, ignore])

Return a copy of the object.

from_dict(dct[, validate])

Construct class from a dictionary representation.

from_json(json_string[, validate])

Instantiate the object from a valid JSON string.

otherwise(statement, /, **kwds)

Finalize the condition with a default value.

resolve_references([schema])

Resolve references in the context of this object's schema or root schema.

to_dict(*args, **kwds)

Return a dictionary representation of the object.

to_json([validate, indent, sort_keys, ...])

Emit the JSON representation for this object as a string.

validate(instance[, schema])

Validate the instance against the class schema in the context of the rootschema.

validate_property(name, value[, schema])

Validate a property against property schema in the context of the rootschema.

when([predicate, empty])

Attach another predicate to the condition.