lotus.module

<?php

/**
 * @file
 * Contains lotus.module.
 */

use Drupal\user\Entity\User;

/**
 * Helper function to create a new user.
 */
function create_new_user(){
  $user = User::create();

  //Mandatory settings
  $user->setPassword('YOUR_PASSWORD');
  $user->enforceIsNew();
  $user->setEmail('YOUR_EMAIL');

  //This username must be unique and accept only a-Z,0-9, - _ @ .
  $user->setUsername('YOUR_USERNAME'); 

  //Optional settings
  $language = 'en';
  $user->set("init", 'email');
  $user->set("langcode", $language);
  $user->set("preferred_langcode", $language);
  $user->set("preferred_admin_langcode", $language);
  $user->activate();

  //Save user
  $user->save();
  drupal_set_message("user with uid " . $user->id() . " saved!\n");
}