`traitlets.traitlets:Tuple.init`

Signature

def __init__ ( self , * traits : t.Any , ** kwargs : t.Any ) → None

Create a tuple from a list, set, or tuple.

Create a fixed-type tuple with Traits:

t = Tuple(Int(), Str(), CStr())

would be length 3, with Int,Str,CStr for each element.

If only one arg is given and it is not a Trait, it is taken as default_value:

t = Tuple((1, 2, 3))

Otherwise, default_value must be specified by keyword.

*traits : TraitTypes [ optional ]: the types for restricting the contents of the Tuple. If unspecified, types are not checked. If specified, then each positional argument corresponds to an element of the tuple. Tuples defined with traits are of fixed length.
default_value : SequenceType [ optional ]: The default value for the Tuple. Must be list/tuple/set, and will be cast to a tuple. If traits are specified, default_value must conform to the shape and type they specify.
**kwargs: Other kwargs passed to Container