/usr/lib/python3/dist-packages/pyutilib/math/median3.py is in python3-pyutilib 5.3.5-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 | # _________________________________________________________________________
#
# PyUtilib: A Python utility library.
# Copyright (c) 2008 Sandia Corporation.
# This software is distributed under the BSD License.
# Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
# the U.S. Government retains certain rights in this software.
# _________________________________________________________________________
def median(mylist):
"""
Returns the median value of a list
"""
mylist = list(mylist)
mylist.sort()
if (len(mylist) == 0):
raise ArithmeticError("Attempting to compute the median of a zero-length list")
elif (len(mylist) == 1):
return mylist[0]
elif (divmod(len(mylist),2)[1] == 1):
return mylist[(len(mylist)-1)//2]
ndx = len(mylist)//2
return (mylist[ndx-1]+mylist[ndx])/2.0
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