code: def _sort_modules(mods):
      def compare(x, y):
          x = x[1]
          y = y[1]
          if x == y:
              return 0
          if y.stem == "__init__.py":
              return 1
          if x.stem == "__init__.py" or x < y:
              return -1
          return 1
      return sorted(mods, key=cmp_to_key(compare))