#!/usr/bin/env python

from igraph import *
import logging
import time

def main():
    logging.basicConfig(level=logging.INFO)

    logging.info("Hundred Gnp random graphs")
    for i in xrange(100):
        g = Graph.Erdos_Renyi(n=1000, p=3.0/1000, directed=False, loops=False)

    logging.info("Generate hundred scale free graphs")
    for i in xrange(100):
        g = Graph.Barabasi(1000, 4, directed=True)

    logging.info("Generate a graph according to a given degree sequence 100x")
    g = Graph.Erdos_Renyi(n=1000, p=10.0/1000, directed=False, loops=False)
    for i in xrange(100):
        degs = g.degree()
        g2 = Graph.Degree_Sequence(degs, method="vl")

    logging.info("Simplify 100 graphs")
    g = Graph.Barabasi(1000, 4, directed=True)
    for i in xrange(100):
        g2 = g.copy()
        g2.simplify(multiple=True, loops=True)

    g.simplify(multiple=True, loops=True)
    logging.info("Betweenness (10 times)")
    for i in xrange(10):
        bs = g.betweenness(directed=True)

    logging.info("Transitivity (10 times)")
    for i in xrange(10):
        trans = g.transitivity_undirected()

    logging.info("Closeness (10 times)")
    for i in xrange(10):
        clo = g.closeness()


if __name__ == "__main__":
    start = time.time()
    for i in xrange(5): main()
    end = time.time()
    print "%.4f seconds" % (end-start)