code: def lagrange_multiplier(x):
      return LagrangeMultiplier.apply(x)
  
file_path: pytext/pytext/utils/loss.py
imports: import numpy
  import torch
  from .cuda import FloatTensor
label_desc: Use image node_id 6 for calling a global function with example usage: lagrange_multiplier(x) and returns: LagrangeMultiplier