code: def convert_notebooks():
      """
      Converts IPython Notebooks to proper .rst files and moves static
      content to the _static directory.
      """
      convert_status = call(
          ["jupyter", "nbconvert", "--to", "rst", "*.ipynb"]
      )
      if convert_status != 0:
          raise SystemError(
              "Conversion failed! Status was %s" % convert_status
          )
  
      notebooks = [
          x
          for x in os.listdir(".")
          if ".ipynb" in x and os.path.isfile(x)
      ]
      names = [os.path.splitext(x)[0] for x in notebooks]
  
      for i in range(len(notebooks)):
          name = names[i]
          notebook = notebooks[i]
  
          print("processing %s (%s)" % (name, notebook))
  
          # move static files
          sdir = "%s_files" % name
          statics = os.listdir(sdir)
          statics = [os.path.join(sdir, x) for x in statics]
          [shutil.copy(x, "_static/") for x in statics]
          shutil.rmtree(sdir)
  
          # rename static dir in rst file
          rst_file = "%s.rst" % name
          print("RST file is %s" % rst_file)
          data = None
          with open(rst_file, "r") as f:
              data = f.read()
  
          if data is not None:
              with open(rst_file, "w") as f:
                  # On Windows, bad escape character sequences are included (%5C) in static references
                  # We remove these here and replace with forward slashes as appropriate
                  # While converting the static directory name.
                  data = re.sub("%s(%%5C|/)" % sdir, "_static/", data)
                  f.write(data)
  
          # add special tags
          lines = None
          with open(rst_file, "r") as f:
              lines = f.readlines()
  
          if lines is not None:
              n = len(lines)
              i = 0
              rawWatch = False
  
              while i < n:
                  line = lines[i]
                  # add class tags to images for css formatting
                  if "image::" in line:
                      lines.insert(i + 1, "   :class: pynb\n")
                      n += 1
                  elif "parsed-literal::" in line:
                      lines.insert(i + 1, "   :class: pynb-result\n")
                      n += 1
                  elif "raw:: html" in line:
                      rawWatch = True
  
                  if rawWatch:
                      if "<div" in line:
                          line = line.replace(
                              "<div", '<div class="pynb-result"'
                          )
                          lines[i] = line
                          rawWatch = False
  
                  i += 1
  
              with open(rst_file, "w") as f:
                  f.writelines(lines)
  
imports: import os
  from subprocess import call
  import shutil
  import re
label_desc: Use image node_id 1 for calling a global function with example usage: convert_notebooks() without return types