.. _routines.io:

Input and output

.. currentmodule:: numpy

NumPy binary files (npy, npz)

.. autosummary:: :toctree: generated/

load save savez savez_compressed lib.npyio.NpzFile

The format of these binary file types is documented in :py:mod:numpy.lib.format

Text files

.. autosummary:: :toctree: generated/

loadtxt savetxt genfromtxt fromregex fromstring ndarray.tofile ndarray.tolist

Raw binary files

.. autosummary::

fromfile ndarray.tofile

String formatting

.. autosummary:: :toctree: generated/

array2string array_repr array_str format_float_positional format_float_scientific

Memory mapping files

.. autosummary:: :toctree: generated/

memmap lib.format.open_memmap

.. _text_formatting_options:

Text formatting options

Text formatting settings are maintained in a :py:mod:context variable <python:contextvars>, allowing different threads or async tasks to have independent configurations. For more information, see :ref:thread_safety.

.. autosummary:: :toctree: generated/

set_printoptions get_printoptions printoptions

Base-n representations

.. autosummary:: :toctree: generated/

binary_repr base_repr

Data sources

.. autosummary:: :toctree: generated/

lib.npyio.DataSource

Binary format description

.. autosummary:: :toctree: generated/

lib.format