Return error instead of raise error? about python-for-algorithms--data-structures--and-interviews HOT 2 OPEN

i'm using this code to see if it's doubling but it's not doing that

import sys n=10 for i in range(n): # Number of elements a = len(arr) # Actual Size in Bytes b = sys.getsizeof(arr) print 'Length: {0:3d}; Size in bytes: {1:4d} '.format(a,b) arr.append(n)

Length: 2; Size in bytes: 64 Length: 3; Size in bytes: 64 Length: 4; Size in bytes: 64 Length: 5; Size in bytes: 64 Length: 6; Size in bytes: 64 Length: 7; Size in bytes: 64 Length: 8; Size in bytes: 64 Length: 9; Size in bytes: 64 Length: 10; Size in bytes: 64

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@cowboyuniverse

sys.getsizeof(arr) calculates the size of the DynamicArray() object itself - not the array size. The solution is to create a sizeof function which returns the actual size of the array (in bytes).

def __sizeof__(self):
        """
        Return the size of the object
        """
        
        return self.capacity * ctypes.sizeof(ctypes.py_object)

https://docs.python.org/3/library/sys.html#sys.getsizeof

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