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CoNekT/utils/jaccard.py

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def jaccard(list_a, list_b):
"""
Calculates the jaccard index from two python lists.
:param list_a: First list
:param list_b: Other list
:return: The jaccard index
"""
union_count = len(set(list_a + list_b))
intersection_count = len(set(list_a).intersection(set(list_b)))
return intersection_count/union_count