in python using numpy library only

def example_normalize(data): (4 pts) This function normalizes a given set of examples by their respective lengths. It receives a 2-D numpy array (N x M) (N: examples, M: features), and returns the scaled examples back as a 2-D (N x M) numpy array. Parameters: feature: a 2-D numpy array that represents examples and their features (N x M) (N: examples, M: features) return None