Programatically creation of nodes in #Drupal7

yourmodule.module

<?php

/**
 * Creates 'nodetype' pages.
 *
 * @param array $content
 *   Assoc array with machine names as key and node title.
 */
function yourmodule_create_nodetype($content) {
  foreach ($content as $machine_name => $content_item) {
    $node = new stdClass();
    $node->title = $content_item;
    $node->type = 'nodetype'; //replace nodetype with desired node type's machine name.
    node_object_prepare($node); // Sets some defaults. Invokes hook_prepare() and hook_node_prepare().
    $node->language = 'en'; // Replace with language prefix.
    $node->uid = 1; // Select uid to be node's author.
    $node->status = 1; // Whether it's published or not.
    $node->promote = 0; // Whether it's promoted to frontpage or not.
    $node->comment = 0; // Whether allows comments or not.
    // Uncomment below if using module machine_name
    // $node->field_machine_name[LANGUAGE_NONE][]['value'] = $machine_name;
    node_save($node);

    if (! empty($node->nid)) {
      drupal_set_message(t('Inserted node !name', array('!name' => $content_item)));
    }
  }
}

yourmodule2.install

<?php 

/**
 * Creates a node using previously created function from a different module 
 */
  yourmodule_create_nodetype(array(
    'machine_name' => 'Node title',
    'machine_name2' => 'Node title 2',
  ));