code: def constant(value):
      """Returns an LR schedule that is constant from time (step) 1 to infinity."""
      return _BodyAndTail(value, body_start=1)
  
file_path: trax/trax/supervised/lr_schedules.py
imports: import math
  import gin
  from trax.fastmath import numpy
label_desc: Use image node_id 1 for calling a global function with example usage: constant(value) and returns: _BodyAndTail