Constrained min. problem about comp-econ-sp18 HOT 3 CLOSED

c in fun represents a callable (typically a function). a here is a tuple. hi is a function. hi() is not a function, but whatever the function hi returns. (hi doesn't return anything.) The () on hi() is what causes hi to be "called."

from comp-econ-sp18.

Take a look at the documentation here: https://docs.scipy.org/doc/scipy-0.13.0/reference/generated/scipy.optimize.fmin_slsqp.html

You can supply the constrains using eqcons or f_eqcons. The first requires a list of scalar-valued functions representing the constraints. It should be supplied as a list of functions. The second requires that you write a single, vector-valued function that represents the constraints. It should be supplied as a single callable. You can use either one you choose.

To understand the error, consider the following code:

a = ()

def hi():
    print('hi')

def fun(c):
    c()

The function fun takes a callable. If I supply a, I get the same error you're describing. If I supply hi, it works fine.

from comp-econ-sp18.

When you mean "callable" in your example, do you mean that c() represents a function? So if we're phrasing the problem differently, a is an empty list, which doesn't correspond to a function. However hi() is a function, so we can "call" it?

Thanks!

from comp-econ-sp18.