Convert each entry '(,)' list to without string

Question

If you have a list in python lets say: list1 = [\'(18,430)\', \'(19,430)\', \'(19,429)\', \'(19,428)\', \'(19,427)\', \'(18,426)\', \'(17,426)\', \'(17,425)\', \'(17,424)\',