title: Scipy: bounds for fitting parameter(s) when using optimize.leastsq
body: <p>I am using optimize.leastsq to fit data. I would like to constrain the fitting parameter(s) to a certain range. Is it possible to define bounds when using optimize.leastsq? Bounds are implemented in optimize.fmin_slsqp, but I'd prefer to use optimize.leastsq.</p>