compare sample to patterns and find closest match

compare.py

def compare():
    results = []
    results['attack'] = distance(test, attack)
    results['scan'] = distance(test, scan)
    results['build'] = distance(test,build)
    return min(results, key = lambda x: results.get(x))
	
def distance(a,b):
    total = 0
    for i in range(len(a)):
        for j in range(len(a)):
            for k in range(len(a)):
                total += abs( a[i,j,k] - b[i,j,k] )
    return total