title: passing arguments to functions in python using argv
body: <p>Please find the below script </p>
  
  <pre><code>from sys import argv
  script, contact_name, contact_no = argv
  
  def operation()
      some code goes here
  </code></pre>
  
  <p>Since i run this script from command line, How do i pass contact_name and contact_no to operation function?
  I am using python 2.7</p>