_ffi.py 文件源码

def native(type_, value):
    if isinstance(value, type_):
        return value
    if sys.version_info < (3,) and type_ == int and isinstance(value, int_types):
        return value
    if isinstance(value, ctypes.Array) and value._type_ == ctypes.c_byte:
        return ctypes.string_at(ctypes.addressof(value), value._length_)
    return type_(value.value)