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#!/usr/bin/python
import sys
import optparse
from heapq import heappush, heappop
import math
lc = 0
maxdepth = -1
total_depth = 0
total_cols = 0
total_paths = 0.0
optparser = optparse.OptionParser()
optparser.add_option("-k", "--k-best", dest="k", type='int', help="number of best paths", default=1)
(opts,args) = optparser.parse_args()
n = opts.k
if len(args)==0: args=(sys.stdin)
for fname in args:
if (type(fname) == type('')):
f = open(fname, "r")
else:
f = fname
lc = 0
nodes = 0
for line in f:
lc+=1
cn = eval(line)
if (len(cn[0]) == 0):
continue
paths = 1.0
for col in cn:
depth=len(col)
paths*=float(depth)
nodes += depth
total_depth += depth
total_cols += 1
total_paths+=paths
avg=float(total_depth)/float(lc)
print "averagePaths=%g" % (total_paths / float(lc))
print "averageNodes=%f" % (float(total_depth) / float(lc))
print "averageLen=%f" % (float(total_cols) / float(lc))
print "Nodes/Len=%f" % (float(total_depth)/float(total_cols))
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