Arrays

Support for NumPy arrays is a key focus of Numba development and is currently undergoing extensive refactorization and improvement. Most capabilities of NumPy arrays are supported by Numba in object mode, and a few features are supported in nopython mode too (with much more to come).

A few noteworthy limitations of arrays at this time:

• Arrays can be passed in to a function in nopython mode, but not returned. Arrays can only be returned in object mode.
• New arrays can only be created in object mode.
• Currently there are no bounds checking for array indexing and slicing.
• NumPy array ufunc support in nopython node is incomplete at this time. Most if not all ufuncs should work in object mode though.
• Array slicing only works in object mode.