code: def log(cmd, comment=None):
      filename = LOG_DIR + "/commands.log"
      # everyone can read
      with open(filename, "a") as f:
          f.write(str(datetime.datetime.now()) + " -- ")
          # what got sent to h2o
          # f.write(cmd)
          # let's try saving the unencoded url instead..human readable
          if cmd:
              f.write(urlparse.unquote(cmd))
              if comment:
                  f.write("    #")
                  f.write(comment)
              f.write("\n")
          elif comment:  # for comment-only
              f.write(comment + "\n")
              # jenkins runs as 0xcustomer, and the file wants to be archived by jenkins who isn't in his group
      permissions = (
          stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IROTH
      )
      os.chmod(filename, permissions)
  
imports: import sys, os, time, json, datetime, errno, stat, getpass, requests, pprint
  import h2o
label_desc: Use image node_id 14 for calling a global function with example usage: log(cmd, comment) without return types