old_contents: import sys
  import json
  
  if len(sys.argv) <= 1:
      exit(1)
  
  status = 0
  
  for file in sys.argv[1:]:
      with open(file, encoding="ISO-8859-1") as f:
          try:
              json.load(f)
          except ValueError as exception:
              print("JSON error in {}".format(file))
              print(exception)
              status = 1
          else:
              print("Valid {}".format(file))
  
  exit(status)
  
new_contents: import sys
  import json
  
  if len(sys.argv) <= 1:
      exit(1)
  
  status = 0
  
  for file in sys.argv[1:]:
      with open(file, encoding="ISO-8859-1") as f:
          try:
              json.load(f)
          except ValueError as exception:
              print("JSON error in {}".format(file))
              print(exception)
              status = 1
          else:
              print("Valid {}".format(file))
  
  exit(status)
  
subject: Update json_verifier.py