error while running lasso.py
(A*x)  Expression has dimensionality of (10, ) and b has shape of ( 10, 1) - this is why you see this error. 

My fix solves the error, but you should double check the results

objective = Minimize(sum_squares(A*x - np.array(b).reshape(10,)) + gamma*norm(x, 1))


Hope this helps!