#!/usr/bin/python
#
# Python program to print Fibonacci numbers
#     0 1 1 2 3 5 8 13 21 34 55 89 ... 
# where the 3rd number is the sum of the previous 2 numbers.
#

import cgi       # CGI module

# FieldStorage object saves the data from the client.
form = cgi.FieldStorage( )
act  = form["act"].value
no   = form["no" ].value

if ( act == "Print Fibonacci numbers" ):
  # Print HTML.
  print( "Content-type: text/html\n\n" )
  a  = 0
  b  = 1
  no = int( no )
  if ( no <= 2 ):
    print( "The first 2 numbers are 0 and 1." )
  else:
    i = 0
    while ( i < no ):
      print a, " "
      c  = a + b
      a  = b
      b  = c
      i += 1

Which is NOT a computer language?

  CGI
  CSS
  HTML
  Python