code: def generate_overcloud_passwords(output_file="tripleo-overcloud-passwords"):
      
  
      if os.path.isfile(output_file):
          with open(output_file) as f:
              return dict(line.split('=') for line in f.read().splitlines())
  
      password_names = (
          "OVERCLOUD_ADMIN_PASSWORD",
          "OVERCLOUD_ADMIN_TOKEN",
          "OVERCLOUD_CEILOMETER_PASSWORD",
          "OVERCLOUD_CEILOMETER_SECRET",
          "OVERCLOUD_CINDER_PASSWORD",
          "OVERCLOUD_DEMO_PASSWORD",
          "OVERCLOUD_GLANCE_PASSWORD",
          "OVERCLOUD_HEAT_PASSWORD",
          "OVERCLOUD_HEAT_STACK_DOMAIN_PASSWORD",
          "OVERCLOUD_NEUTRON_PASSWORD",
          "OVERCLOUD_NOVA_PASSWORD",
          "OVERCLOUD_SWIFT_HASH",
          "OVERCLOUD_SWIFT_PASSWORD",
      )
  
      passwords = dict((p, _generate_password()) for p in password_names)
  
      with open(output_file, 'w') as f:
          for name, password in passwords.items():
              f.write("{0}={1}\n".format(name, password))
  
      return passwords
docs: Create the passwords needed for the overcloud
  
      This will create the set of passwords required by the overcloud, store
      them in the output file path and return a dictionary of passwords. If the
      file already exists the existing passwords will be returned instead,