Python Program to display the Fibonacci sequence up to n-th term

#!/usr/bin/python
# -*- coding: utf-8 -*-
# Program to display the Fibonacci sequence up to n-th term
nterms = int(input('How many terms? '))
# first two terms
(n1, n2) = (0, 1)
count = 0
# check if the number of terms is valid
if nterms <= 0:
   print 'Please enter a positive integer'
elif nterms == 1:
   print ('Fibonacci sequence upto', nterms, ':')
   print n1
else:
   print 'Fibonacci sequence:'
   while count < nterms:
       print n1
       nth = n1 + n2
      # update values
       n1 = n2
       n2 = nth
       count += 1