`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[source]¶

Defines possible values for kind.

Unspecified = None[source]¶

Batch = <batch>[source]¶

Spatial = <spatial>[source]¶

Time = <spatial>[source]¶

Feature = <feature>[source]¶

Types = (<batch>, <spatial>, <feature>)[source]¶

class returnn.tensor._dim_extra.Op(kind, inputs, attribs=None)[source]¶

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)[source]¶

Parameters:: obj (Dim|_MarkedDim)
Returns:: anything which can be compared