title: what is this size operator is doing in the function call?
body: <p>what is the work of this if Enquiry(lis1).size: and can we use .size at the time of calling the function if it is so ,then whatt will argument lis1 will receive in the function definition def Enquiry(lis1): and please elaborate this because i am beginner in python</p>
  
  <pre><code>import numpy 
  def Enquiry(lis1): 
      return(numpy.array(lis1))  
  lis1 = [] 
  if Enquiry(lis1).size: 
      print("Not Empty") 
  else: 
      print("Empty
  </code></pre>