help mising 1 required posisitional rgument

[kobencry]

def Contoh(tes, *args, **kwargs):

      try:
            return tes(*args, **kwargs)

      except Exception as err:
            print(type(err))

            raise

a = Contoh(nama="Tes")
print(a.tes())

Error:
a = Contoh(nama="Tes")
TypeError: Contoh() missing 1 required positional argument: 'tes'