title: How to import and use user defined classes in robot framework with python
body: <p>Assume I have a class in python:</p>
  
  <pre><code>class TestClass(object):
      def __init__(self, arg1, arg2):
          self.arg1 = arg1
          self.arg2 = arg2
  
      def print_args(self):
          print arg1, arg2
  </code></pre>
  
  <p>I want to use <code>robotframework</code> to implement my tests scenarios. I want to make an instance from above class and call its methods. How to do that? I know how to import the lib; it should be like this:</p>
  
  <pre><code>Library   TestClass
  </code></pre>
  
  <p>I don't know how to initialize an object from this class and call class methods via this object. If I wanted to implement it with python, I would write some piece of code like this:</p>
  
  <pre><code>import TestClass
  test = TestClass('ARG1', 'ARG2')
  test.print_args()
  </code></pre>
  
  <p>Now, I want to know how to write this in <code>robotframework</code>. Any help?</p>