This is not always true but depends on the operation. Cython/Numpy take advantage of Python's extensibility at the operating system level. See: http://stackover

This is not always true but depends on the operation. Cython/Numpy take advantage of Python's extensibility at the operating system level. See: http://stackoverflow.com/questions/2119761/simple-python-challenge-fastest-bitwise-xor-on-data-buffers/2566106?benchmark#2566106 http://stackoverflow.com/questions/2119761/simple-python-cha...