code: def make_dataset(rows, cols):
      return [
          constant_timeseries(value=i, length=cols) for i in range(rows)
      ]
  
imports: import pytest
  from darts.utils.model_selection import MODEL_AWARE, SIMPLE, train_test_split
  from darts.utils.timeseries_generation import constant_timeseries
label_desc: Use image node_id 1 for calling a global function with example usage: make_dataset(rows, cols) and returns: unknown