Input and output

NPZ files

load (file[, mmap_mode]) Load a pickled, .npy, or .npz binary file.
save (file, arr) Save an array to a binary file in NumPy .npy format.
savez (file, *args, **kwds) Save several arrays into a single, compressed file in .npz format.

Text files

loadtxt (fname[, dtype, comments, ...]) Load data from a text file.
savetxt (fname, X[, fmt, delimiter]) Save an array to a text file.
genfromtxt (fname[, dtype, comments, ...]) Load data from a text file, with missing values handled as specified.
fromregex (file, regexp, dtype) Construct an array from a text file, using regular expression parsing.
fromstring (string[, dtype, count, sep]) Return a new 1-D array initialized from raw binary or text data in string.
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.

String formatting

array_repr (arr[, max_line_width, ...]) Return the string representation of an array.
array_str (a[, max_line_width, ...]) Return a string representation of the data in an array.

Memory mapping files

memmap Create a memory-map to an array stored in a binary file on disk.

Text formatting options

set_printoptions ([precision, threshold, ...]) Set printing options.
get_printoptions () Return the current print options.
set_string_function (f[, repr]) Set a Python function to be used when pretty printing arrays.

Base-n representations

binary_repr (num[, width]) Return the binary representation of the input number as a string.
base_repr (number[, base, padding]) Return a string representation of a number in the given base system.

Data sources

DataSource ([destpath]) A generic data source file (file, http, ftp, ...).

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