You can write your own function to compute the median. But if you want to use some built-in function, you can use module Numpy or statistics. You can use Numpy with both Python2 and Python3, but statistics does not work with Python2. Here is an example:
>>> import statistics
>>> items = [1, 2, 3, 6, 8]
>>> statistics.median(items)
3
>>> vals = [11,22,12,34,21,65,34,554,23,45,12,78,65,56,78,98,765,234,10]
>>> statistics.median(vals)
45
>>> import numpy
>>> numpy.median(vals)
45.0
>>> int(numpy.median(vals))
45
>>> int(numpy.median(items))
3
