display current logged in user name and data in ERPNext/Frappe Print Format

<!-- TO print current logged in user email id -->
<div class="row">
    <div class="col-xs-5 text-right"><big><b>Print By(email id)</b>  </big></div>
    <div class="col-xs-7 "><big>{{ frappe.user }} </big> </div>
</div> 

<!-- TO print current logged in user fist name -->
{% set u = frappe.get_doc("User", frappe.user) %} 
<div class="row">
    <div class="col-xs-5 text-right"><big><b>Print By(user name)</b>  </big></div>
    <div class="col-xs-7 "><big>{{ u.first_name }} </big> </div>
</div>