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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 distance(vec1, vec2):
 """Calculate the distance between two Vectors"""

        if isinstance(vec1, Vector2) \
                and isinstance(vec2, Vector2):
            dist_vec = vec2 - vec1
            return dist_vec.length()
        else:
            raise TypeError("vec1 and vec2 must be Vector2's")