Magento 2: How to get custome attribute ?

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();

$_product = $objectManager->get('Magento\Catalog\Model\Product')->load($_item->getProduct()->getId());

<?php

$attr = $_product->getResource()->getAttribute('brand');

if ($attr->usesSource()) {

$optionText = $attr->getSource()->getOptionText($_product->getBrand()); ?>

</div>

<?php } ?>

$objectManager = \Magento\Framework\App\ObjectManager::getInstance(); $_product = $objectManager->get('Magento\Catalog\Model\Product')->load($_item->getProduct()->getId()); <?php $attr = $_product->getResource()->getAttribute('brand'); if ($attr->usesSource()) { $optionText = $attr->getSource()->getOptionText($_product->getBrand()); ?> <div class="brand"> <span><?php echo $optionText; ?></span> </div> <?php } ?>

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$_product = $objectManager->get('Magento\Catalog\Model\Product')->load($_item->getProduct()->getId());

<?php 
      $attr = $_product->getResource()->getAttribute('brand');
      if ($attr->usesSource()) {
        $optionText = $attr->getSource()->getOptionText($_product->getBrand()); ?>
      <div class="brand">
        <span><?php echo $optionText; ?></span>
      </div>
    <?php 	} ?>

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