python - Check if list contains only item x

Question

Say all of w, x, y, and z can be in list A. Is there a shortcut for checking that it contains only x--eg. without negating the other variables?

w, x, y, and z are all single values (not lists, tuples, etc).

Answer 1

A=[w,y,x,z]
all(p == x for p in A)