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#!/usr/bin/env python
import itertools
import sys
def generate_kmers(kmer):
""" generate all possible kmers permutations seperated by newlines
>>> kmers = generate_kmers(1)
>>> generate_kmers(2)
param kmer: the desired Mer size
type kmer: int
return: Returns a string of kmers seperated by newlines
rtype: string
"""
return '\n'.join(''.join(x) for x in itertools.product('acgt', repeat=kmer))
if(len(sys.argv) < 2):
print "usage: generate_kmers KMER_SIZE"
exit(1)
print generate_kmers(int(sys.argv[1]))
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