And, all of NumPy’s operations take place outside the Python runtime, so they aren’t constrained by Python’s limitations. NumPy provides a specialized array type that is optimized to work ...

NumPy gives Python users a wickedly fast library ... The checks slow down access to the array, however, because every operation has to be bounds-checked. Using the decorators disables those ...

Gommers added, "Really long-term I expect the NumPy 'execution engine' (i.e., the C and Python code that does the heavy lifting for fast array operations) to become less and less relevant ...