Sympy lambdify how to write f(x1,x2, x3,....xn)

Question

I am trying to use lambdify. The code is:

expr = x+y
f = lambdify((x,y), expr, "numpy")

Now evaluate the function, for example: f(1,2) if the x, y input is stored in a list, like [1,2] how can I pass the variable to the function f? assuming that f can be a function of thousand variables so manually input is not ideal. Any suggestions? Thanks