text: #!/usr/bin/env python3
  #
  # Copyright (c) Facebook, Inc. and its affiliates.
  #
  # This source code is licensed under the MIT license found in the
  # LICENSE file in the root directory of this source tree.
  
  
  import sys
  
  
  """Reads in a fairseq output file, and verifies that the constraints
  (C- lines) are present in the output (the first H- line). Assumes that
  constraints are listed prior to the first hypothesis.
  """
  
  constraints = []
  found = 0
  total = 0
  for line in sys.stdin:
      if line.startswith("C-"):
          constraints.append(line.rstrip().split("\t")[1])
      elif line.startswith("H-"):
          text = line.split("\t")[2]
  
          for constraint in constraints:
              total += 1
              if constraint in text:
                  found += 1
              else:
                  print(f"No {constraint} in {text}", file=sys.stderr)
  
          constraints = []
  
  Print(f"Found {found} / {total} = {100 * found / total:.1f}%")
  