code: def usage():
      print("")
      print("Usage for:  python pyunit.py [...options...]")
      print("")
      print(
          "    --usecloud        connect to h2o on specified ip and port, where ip and port are specified as follows:"
      )
      print("                      IP:PORT")
      print("")
      print(
          "    --onHadoop        Indication that tests will be run on h2o multinode hadoop clusters."
      )
      print(
          "                      `locate` and `sandbox` pyunit test utilities use this indication in order to"
      )
      print(
          "                      behave properly. --hadoopNamenode must be specified if --onHadoop option is used."
      )
      print(
          "    --hadoopNamenode  Specifies that the pyunit tests have access to this hadoop namenode."
      )
      print(
          "                      `hadoop_namenode` pyunit test utility returns this value."
      )
      print("")
      print("    --ipynb           test is ipython notebook")
      print("")
      print("    --pyDemo          test is python demo")
      print("")
      print("    --pyUnit          test is python unit test")
      print("")
      print("    --pyBooklet       test is python booklet")
      print("")
      print("    --resultsDir      the results directory.")
      print("")
      print(
          "    --testName        name of the pydemo, pyunit, or pybooklet."
      )
      print("")
      print("    --ldapUsername    LDAP username.")
      print("")
      print("    --ldapPassword    LDAP password.")
      print("")
      print("    --kerbPrincipal   Kerberos service principal.")
      print("")
      print(
          "    --forceConnect    h2o will attempt to connect to cluster regardless of cluster's health."
      )
      print("")
      sys.exit(1)
  
imports: import sys, os
  from time import gmtime, strftime
label_desc: Use image node_id 2 for calling a global function with example usage: usage() without return types