old_contents: import ioant.proto as proto
  import sys
  
  file_path = os.path.abspath(os.path.dirname(__file__))
  proto_path = os.path.join("..", "generated_proto")
  proto_path = os.path.join(file_path, proto_path)
  
  proto.python_main(proto_path)
  sys.path.append(proto_path)
  
new_contents: import ioant.proto as proto
  import sys
  import os
  
  file_path = os.path.abspath(os.path.dirname(__file__))
  proto_path = os.path.join("..", "generated_proto")
  proto_path = os.path.join(file_path, proto_path)
  
  proto.python_main(proto_path)
  sys.path.append(proto_path)
  
subject: add missing import os