concat
concat(
indexes ,
dim ,
positions = None,
)-> ‘TemporalRangeIndex | Any’
Concatenate segment indexes, staying lazy when the grids chain.
Segments whose ranges abut exactly (same step, each starting one step past the previous end) merge into one lazy index; anything else — a gap, a step change, an explicit reordering — comes back as an ordinary materialized pandas index over the concatenated labels.