proc newPyInt(bytes: PyBytes; endianness: Endianness; signed = false): PyIntObject {.
    ...raises: [], tags: [RootEffect], forbids: [].}

proc newPyInt[T: uint8 | int8](bytes: openArray[T]; endianness: Endianness;
                               signed = false): PyIntObject

proc to_bytes(self: PyIntObject; length = 1; byteorder: string = "big";
              signed = false): seq[byte] {....raises: [ValueError], tags: [],
    forbids: [].}

proc to_bytes(self: PyIntObject; length: int; endianness: Endianness;
              signed = false): seq[byte] {....raises: [ValueError], tags: [],
    forbids: [].}

proc to_bytes[T: char | uint8 | int8](self: PyIntObject; length: int;
                                      endianness: Endianness; signed = false;
                                      res: var seq[T]): IntObjectToBytesError