title: Reject letters and only allow number inputs @ enter first and second number in Python 3.x
body: <p>Trying to only allow number inputs in python 3.x no letters and ask user to input a number if they enter a letter. I have two numbers that need to be entered and need it to reject singlarily as they are entered.</p>
  
  <pre><code>print ('Hello There, what is your name?') # String asks the user for their name
  myname = input() #string
  print ('Nice to meet you, '+ myname)# String responds "Nice to meet you" and input the users name that was entered
  print() #adds a space
  print ('We want to some math today!') # String tells user we want to do some math today
  print() # adds a space
  num1,num2 = float(input("Enter first number")), float(input("Enter second number"))
  sum = num1+num2
  if sum  &gt;100 : # Determines if users inputs when added together are  &gt; 100
   print('They add up to a "Big Number" ') # If inputs are &gt; 100 prints "They add up to a big number"
   # and the users name
  elif sum &lt;=100 : # Determines if the users inputs when added are = to or &lt;100
   print ('They add up to' ,(sum))
  </code></pre>