Input and output

NPZ files

Text files

ndarray.tofile(fid[, sep, format]) Write array to a file as text or binary (default).
ndarray.tolist() Return the array as a (possibly nested) list.

Raw binary files

ndarray.tofile(fid[, sep, format]) Write array to a file as text or binary (default).

String formatting

Memory mapping files

Text formatting options

Base-n representations

Data sources