Simple benchmarking script for khmer

bench.py

import random
import timeit
dna = ['A', 'C', 'G', 'T'] * 10000
random.seed(1)
random.shuffle(dna)
dna = "".join(dna)

import khmer
print(khmer)
kh = khmer._Nodegraph(31, [1])

def fn():
    kh.get_kmer_hashes(dna)

print(timeit.timeit(fn, number=100))