code: def main(path_to_debug_info=None, gdb_argv=None, no_import=False):
      """
      Start the Cython debugger. This tells gdb to import the Cython and Python
      extensions (libcython.py and libpython.py) and it enables gdb's pending
      breakpoints.
  
      path_to_debug_info is the path to the Cython build directory
      gdb_argv is the list of options to gdb
      no_import tells cygdb whether it should import debug information
      """
      parser = optparse.OptionParser(usage=usage)
      parser.add_option(
          "--gdb-executable",
          dest="gdb",
          default="gdb",
          help="gdb executable to use [default: gdb]",
      )
      parser.add_option(
          "--verbose",
          "-v",
          dest="verbosity",
          action="count",
          default=0,
          help="Verbose mode. Multiple -v options increase the verbosity",
      )
  
      (options, args) = parser.parse_args()
      if path_to_debug_info is None:
          if len(args) > 1:
              path_to_debug_info = args[0]
          else:
              path_to_debug_info = os.curdir
  
      if gdb_argv is None:
          gdb_argv = args[1:]
  
      if path_to_debug_info == "--":
          no_import = True
  
      logging_level = logging.WARN
      if options.verbosity == 1:
          logging_level = logging.INFO
      if options.verbosity >= 2:
          logging_level = logging.DEBUG
      logging.basicConfig(level=logging_level)
  
      logger.info("verbosity = %r", options.verbosity)
      logger.debug("options = %r; args = %r", options, args)
      logger.debug(
          "Done parsing command-line options. path_to_debug_info = %r, gdb_argv = %r",
          path_to_debug_info,
          gdb_argv,
      )
  
      tempfilename = make_command_file(
          path_to_debug_info, no_import=no_import
      )
      logger.info(
          "Launching %s with command file: %s and gdb_argv: %s",
          options.gdb,
          tempfilename,
          gdb_argv,
      )
      with open(tempfilename) as tempfile:
          logger.debug(
              'Command file (%s) contains: """\n%s"""',
              tempfilename,
              tempfile.read(),
          )
          logger.info("Spawning %s...", options.gdb)
          p = subprocess.Popen(
              [options.gdb, "-command", tempfilename] + gdb_argv
          )
          logger.info("Spawned %s (pid %d)", options.gdb, p.pid)
          while True:
              try:
                  logger.debug(
                      "Waiting for gdb (pid %d) to exit...", p.pid
                  )
                  ret = p.wait()
                  logger.debug(
                      "Wait for gdb (pid %d) to exit is done. Returned: %r",
                      p.pid,
                      ret,
                  )
              except KeyboardInterrupt:
                  pass
              else:
                  break
          logger.debug(
              "Closing temp command file with fd: %s", tempfile.fileno()
          )
      logger.debug("Removing temp command file: %s", tempfilename)
      os.remove(tempfilename)
      logger.debug("Removed temp command file: %s", tempfilename)
  
file_path: catboost/contrib/tools/cython/Cython/Debugger/Cygdb.py
imports: import os
  import sys
  import glob
  import tempfile
  import textwrap
  import subprocess
  import optparse
  import logging
label_desc: Use image node_id 2 for calling a global function with example usage: main(path_to_debug_info, gdb_argv, no_import) without return types