code: def markdownify_operative_config_str(string):
      """Convert an operative config string to markdown format."""
  
      # TODO(b/37527917): Total hack below. Implement more principled formatting.
      def process(line):
          """Convert a single line to markdown format."""
          if not line.startswith("#"):
              return "    " + line
  
          line = line[2:]
          if line.startswith("===="):
              return ""
          if line.startswith("None"):
              return "    # None."
          if line.endswith(":"):
              return "#### " + line
          return line
  
      output_lines = []
      for line in string.splitlines():
          procd_line = process(line)
          if procd_line is not None:
              output_lines.append(procd_line)
  
      return "\n".join(output_lines)
  
imports: import io
  import struct
  import time
  import warnings
  import wave
  import matplotlib
  import matplotlib.pyplot
  import numpy
  import tensorflow
  from tensorflow.core.util import event_pb2
  from tensorflow.python.summary.writer.event_file_writer import EventFileWriter
label_desc: Use image node_id 2 for calling a global function with example usage: markdownify_operative_config_str(string) and returns: str, line, unknown, str, str, unknown