code: def generateDebianChangelog(package, logFile, version, maintainer):
      """
      ------- Convert CHANGELOG format like:
      pyqtgraph-0.9.1  2012-12-29
  
      - change
      - change
  
  
      -------- to debian changelog format:
      python-pyqtgraph (0.9.1-1) UNRELEASED; urgency=low
  
      * Initial release.
  
      -- Luke <luke.campagnola@gmail.com>  Sat, 29 Dec 2012 01:07:23 -0500
  
  
      *package* is the name of the python package.
      *logFile* is the CHANGELOG file to read; must have the format described above.
      *version* will be used to check that the most recent log entry corresponds
                to the current package version.
      *maintainer* should be string like "Luke <luke.campagnola@gmail.com>".
      """
      releases = []
      current_version = None
      current_log = None
      current_date = None
      with open(logFile) as file_:
          for line in file_.readlines():
              match = re.match(
                  package
                  + r"-(\d+\.\d+\.\d+(\.\d+)?)\s*(\d+-\d+-\d+)\s*$",
                  line,
              )
              if match is None:
                  if current_log is not None:
                      current_log.append(line)
              else:
                  if current_log is not None:
                      releases.append(
                          (current_version, current_log, current_date)
                      )
                  current_version, current_date = (
                      match.groups()[0],
                      match.groups()[2],
                  )
                  # sys.stderr.write("Found release %s\n" % current_version)
                  current_log = []
  
      if releases[0][0] != version:
          raise Exception(
              "Latest release in changelog (%s) does not match current release (%s)\n"
              % (releases[0][0], version)
          )
  
      output = []
      for release, changes, date in releases:
          date = time.strptime(date, "%Y-%m-%d")
          changeset = (
              [
                  "python-%s (%s-1) UNRELEASED; urgency=low\n"
                  % (package, release),
                  "\n",
              ]
              + changes
              + [
                  " -- %s  %s -0%d00\n"
                  % (
                      maintainer,
                      time.strftime("%a, %d %b %Y %H:%M:%S", date),
                      time.timezone / 3600,
                  ),
                  "\n",
              ]
          )
  
          # remove consecutive blank lines except between releases
          clean = ""
          lastBlank = True
          for line in changeset:
              if line.strip() == "":
                  if lastBlank:
                      continue
                  else:
                      clean += line
                  lastBlank = True
              else:
                  clean += line
                  lastBlank = False
  
          output.append(clean)
          output.append("")
      return "\n".join(output) + "\n"
  
label_desc: Use image node_id 1 for calling a global function with example usage: generateDebianChangelog(package, logFile, version, maintainer) and returns: unknown