CounterUpper.py

import time
import numpy  # not really needed for the printing, but for nice percentage :)
import sys

print 'Ciao Fede'
print 'Here is a percentage, on the same line'
for i in numpy.arange(0, 100, 0.1):
        print '\r',  # Comma is needed.
        print 'Doing something. I am now %s%% done' % i,  # Comma is needed
        time.sleep(0.01)
        sys.stdout.flush()  # Might be needed depending on Python installation
print '\nThat was nice!'  # We need to start a new line with the next 'print'