Input a number at a time, and find out the running mean and median.

running_stats.py

import numpy

def running():
    numbers = []
    while True:
        try:
            i = input("Enter Number: ")
            numbers.append(i)
            print "Current median: %s" % (numpy.median(numbers))
            print "Current average: %s" % (numpy.average(numbers))
        except SyntaxError:
            print "data:"
            print numbers
            break


if __name__ == '__main__':
    running()