print("len(vec) = {}".format(len(vec))) print("vec[0] = {}, vec[1] = {}".format(vec[0], vec[1])) vec2 = Vector([3, 1]) print("{} + {} = {}".format(vec, vec2, vec + vec2)) print("{} - {} = {}".format(vec, vec2, vec - vec2)) # print("{} * {} = {}".format(vec, 3, vec * 3)) print("{} * {} = {}".format(3, vec, 3 * vec)) # print("+{} = {}".format(vec, +vec)) print("-{} = {}".format(vec, -vec)) zero2 = Vector.zero(2) print(zero2) print("{} + {} = {}".format(vec, zero2, vec + zero2)) print("norm({}) = {}".format(vec, vec.norm())) print("norm({}) = {}".format(vec2, vec2.norm())) print("norm({}) = {}".format(zero2, zero2.norm())) print("normalize {} is {}".format(vec, vec.normalize())) print(vec.normalize().norm()) print("normalize {} is {}".format(vec2, vec2.normalize())) print(vec2.normalize().norm()) try: zero2.normalize() except ZeroDivisionError: print("Cannot normalize zero vector {}.".format(zero2))
vec = Vector([5, 2]) print(len(vec)) print("vec[0]={},vec[1]={}".format(vec[0], vec[1])) vec2 = Vector([3, 1]) print("{}+{}={}".format(vec, vec2, vec + vec2)) print("{}-{}={}".format(vec, vec2, vec - vec2)) print("{}*{}={}".format(vec, 3, vec * 3)) print("{}*{}={}".format(3, vec, 3 * vec)) print("{}".format(vec.__pos__())) print("{}".format(vec.__neg__())) zero2 = Vector.zero(2) print(zero2) print(vec.norm()) print(vec.normalize()) print(vec.normalize().norm()) print(vec2.normalize().norm()) try: zero2.normalize() except ZeroDivisionError: print('cannot normalize zero vector {}'.format(zero2)) print(vec.dot(vec2)) vec3 = Vector([0, 0]) print("{} == {}?{}".format(zero2, vec3, vec3 == zero2)) print("{} != {}?{}".format(zero2, vec3, vec3 != zero2))