import bsddb
import psycopg2
from subprocess import Popen,PIPE
import time
import sys
import numpy as np

db = bsddb.btopen("test.btdbm","r")

c=0
a=[]
print db.set_location("heizkreisregler10.betriebsdatenRegler1.kesselTemperatur")
while c<50000:
        k,v = db.next()
        a.append(float(v))
        c+=1

print "count=", len(a)
print "avg=", np.average(a)
print "done"