returnn.tensor._dim_extra

Backwards-compatible functions and attribs for the old Dim class, or just rarely used attribs, such that we can save memory for the common case.

class returnn.tensor._dim_extra.DimTypes

Defines possible values for kind.

Unspecified = None

Batch = <batch>

Spatial = <spatial>

Time = <spatial>

Feature = <feature>

Types = (<batch>, <spatial>, <feature>)

class returnn.tensor._dim_extra.Op(kind, inputs, attribs=None)

Op on Dim which results in a derived Dim.

Parameters:

• kind (str) – “add”, “sub”, “mul”, “ceildiv”

• inputs (list[Dim]) –

• attribs (dict[str]|None) –

returnn.tensor._dim_extra.dim_cmp_value(obj)

Parameters:

obj (Dim|_MarkedDim) –

Returns:

anything which can be compared