code: def get_nipype_gitversion():
      """Nipype version as reported by the last commit in git
  
      Returns
      -------
      None or str
        Version of Nipype according to git.
      """
      import os
      import subprocess
  
      try:
          import nipype
  
          gitpath = os.path.realpath(
              os.path.join(
                  os.path.dirname(nipype.__file__), os.path.pardir
              )
          )
      except:
          gitpath = os.getcwd()
      gitpathgit = os.path.join(gitpath, ".git")
      if not os.path.exists(gitpathgit):
          return None
      ver = None
      try:
          o, _ = subprocess.Popen(
              "git describe",
              shell=True,
              cwd=gitpath,
              stdout=subprocess.PIPE,
          ).communicate()
      except Exception:
          pass
      else:
          ver = o.decode().strip().split("-")[-1]
      return ver
  
label_desc: Use image node_id 1 for calling a global function with example usage: get_nipype_gitversion() and returns: ver, None