title: python oop get argument from user's input
body: <p>How can i make so, that user uses input() method for giving a value for argument wheels, to the class Car?:</p>
  
  <pre><code>class Car(object):
      def __init__(self, name, wheels):
          self.name = name
          self.wheels = wheels
  first_car = Car()
  </code></pre>