Lists/tuples as data-format for storage
Note: This implementation is *far* less efficient than using Numpy to support lists/tuples, as the code here is all available in C-level code there. This implementation is required to allow for usage without numpy installed.



Storage of array data in Python lists/arrays
This mechanism, unlike multi-dimensional arrays, is not necessarily uniform in type or dimension, so we have to do a lot of extra checks to make sure that we get a correctly-structured array. That, as well as the need to copy the arrays in Python code, makes this a far less efficient implementation than the numpy implementation, which does all the same things, but does them all in C code.
Note: as an *output* format, this format handler produces ctypes arrays, not Python lists, this is done for convenience in coding the implementation, mostly.