I would like to create a custom data type which basically behaves like an ordinary int, but with the value restricted to be within a given range. I guess I need some kind of factory function, but I cannot figure out how to do it.

myType = MyCustomInt(minimum=7, maximum=49, default=10)
i = myType(16)    # OK
i = myType(52)    # raises ValueError
i = myType()      # i == 10

positiveInt = MyCustomInt(minimum=1)     # no maximum restriction
negativeInt = MyCustomInt(maximum=-1)    # no minimum restriction
nonsensicalInt = MyCustomInt()           # well, the same as an ordinary int

Any hint is appreciated. Thanks!