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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def ave_list_v3(vec_list):
 """Return the average vector of a list of vectors."""


    vec = Vec3(0, 0, 0)
    for v in vec_list:
        vec += v
    num_vecs = float(len(vec_list))
    vec = Vec3(vec.x / num_vecs, vec.y / num_vecs, vec.z / num_vecs)
    return vec