human
Solve the following python programming problem given the following code:
def new_array_type(self, CTypesPtr, length) : 
    if (length is None) : 
        brackets = ' &[]' 
else : 
        brackets = (' &[%d]' % length) 
BItem = CTypesPtr._BItem 
    getbtype = brackets.ffi._get_cached_btype 
    if (BItem is getbtype (model.PrimitiveType ('char'))) : 
        kind = 'char' 
else : 
        if (BItem in (getbtype (model.PrimitiveType ('signed char')), getbtype (model.PrimitiveType ('unsigned char')))) : 
            kind = 'byte' 
else : 
            kind = 'generic' 
class CTypesArray (CTypesGenericArray) : 
        __slots__ = ['_blob', '_own'] 
        if (length is not None) : 
            _ctype = (BItem._ctype * length) 
else : 
            __slots__.append ('_ctype') 
_reftypename = BItem._get_c_name (brackets) 
        _declared_length = length 
        _CTPtr = CTypesPtr 
        def __init__(self, init) : 
            if (length is None) : 
                if isinstance (init, (int, long)) : 
                    len1 = init 
                    init = None 
else : 
                    if ((kind == 'char') and isinstance (init, bytes)) : 
                        len1 = (len (init) + 1) 
else : 
                        init = tuple (init) 
                        len1 = len (init) 
self._ctype = (BItem._ctype * len1) 
self._blob = self._ctype () 
            self._own = True 
            if (init is not None) : 
                self._initialize (self._blob, init) 
@ staticmethod 
        def _initialize(blob, init) : 
            if isinstance (init, bytes) : 
                init = [init [i : (i + 1)] for i in range (len (init))] 
else : 
                init = tuple (init) 
if (len (init) > len (blob)) : 
                raise IndexError ('too many initializers') 
addr = ctypes.cast (blob, ctypes.c_void_p).value 
            PTR = ctypes.POINTER (BItem._ctype) 
            itemsize = ctypes.sizeof (BItem._ctype) 
            for (i, value) in enumerate (init) : 
                p = ctypes.cast ((addr + (i * itemsize)), PTR) 
                BItem._initialize...

    
    

    Fix the buggy line: getbtype = brackets.ffi._get_cached_btype
assistant
#Here is Python program to fix the buggy line: getbtype = brackets.

getbtype = self.ffi._get_cached_btype