#! /usr/bin/python # stats.py # P. Clote import sys,os,tempfile,string,math def getStats(L): #L is list if L==[]: return (0,0,0,0) max = -sys.maxint min = sys.maxint count = 0 sum = 0.0 sumSquares = 0.0 for value in L: x = float(value) if xmax: max=x count = count+1 sum = sum+x sumSquares = sumSquares+x**2 mean = sum/count variance = sumSquares/count - mean**2 stdev = math.sqrt(variance) #print "Mean:%f\tStDev:%f\tMax:%f\tMin:%f" % (mean,stdev,max,min) return (mean,stdev,max,min) if __name__ == '__main__': L = sys.argv[1:] (mean,stdev,max,min) = getStats(L) print "Mean:%f\tStDev:%f\tMax:%f\tMin:%f" % (mean,stdev,max,min)