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The following code works without raising any AssertionError
 >>> n = "some small integer value"
 >>> m = "some larger integer value"
 >>> assert n<m
 >>> data = bytearray(n)
 >>> mem = memoryview(data)
 >>> assert mem==mem[:]
 >>> assert mem==mem[0:]
 >>> assert mem==mem[:m]
However, the different slices have different IDs, failing on the following asserts:
 >>> assert id(mem)==id(mem[:])
 >>> assert id(mem)==id(mem[0:])
 >>> assert id(mem)==id(mem[:m])
Is the interpreter copying unnecessary data in these type of slices?