.. DO NOT EDIT.
.. THIS FILE WAS AUTOMATICALLY GENERATED BY SPHINX-GALLERY.
.. TO MAKE CHANGES, EDIT THE SOURCE PYTHON FILE:
.. "11_demos\python_packages\numpy\demo_indexing.py"
.. LINE NUMBERS ARE GIVEN BELOW.

.. only:: html

    .. note::
        :class: sphx-glr-download-link-note

        :ref:`Go to the end <sphx_glr_download_11_demos_python_packages_numpy_demo_indexing.py>`
        to download the full example code.

.. rst-class:: sphx-glr-example-title

.. _sphx_glr_11_demos_python_packages_numpy_demo_indexing.py:

Indexing, Slicing and Iterating
==================================

.. GENERATED FROM PYTHON SOURCE LINES 4-12

.. code-block:: Python


    import numpy as np


    # **One dimensional**
    a = np.arange(10) ** 3
    a[2]





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    8



.. GENERATED FROM PYTHON SOURCE LINES 14-16

.. code-block:: Python

    a[2:5]





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([ 8, 27, 64], dtype=int32)



.. GENERATED FROM PYTHON SOURCE LINES 17-19

.. code-block:: Python

    a[:6:2] = 1000








.. GENERATED FROM PYTHON SOURCE LINES 20-21

reverse array

.. GENERATED FROM PYTHON SOURCE LINES 21-24

.. code-block:: Python

    a[::-1]






.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([ 729,  512,  343,  216,  125, 1000,   27, 1000,    1, 1000],
          dtype=int32)



.. GENERATED FROM PYTHON SOURCE LINES 25-26

**Multi dimensional**

.. GENERATED FROM PYTHON SOURCE LINES 26-33

.. code-block:: Python

    def f(x, y):
        return 10 * x + y


    b = np.fromfunction(f, (5, 4), dtype=int)
    b





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([[ 0,  1,  2,  3],
           [10, 11, 12, 13],
           [20, 21, 22, 23],
           [30, 31, 32, 33],
           [40, 41, 42, 43]])



.. GENERATED FROM PYTHON SOURCE LINES 34-36

.. code-block:: Python

    b[2, 3]





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    23



.. GENERATED FROM PYTHON SOURCE LINES 37-39

.. code-block:: Python

    b[0:5, 1]





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([ 1, 11, 21, 31, 41])



.. GENERATED FROM PYTHON SOURCE LINES 40-42

.. code-block:: Python

    b[:, 1]





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([ 1, 11, 21, 31, 41])



.. GENERATED FROM PYTHON SOURCE LINES 43-45

.. code-block:: Python

    b[1:3, :]





.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([[10, 11, 12, 13],
           [20, 21, 22, 23]])



.. GENERATED FROM PYTHON SOURCE LINES 46-47

.. code-block:: Python

    b[-1]




.. rst-class:: sphx-glr-script-out

 .. code-block:: none


    array([40, 41, 42, 43])




.. rst-class:: sphx-glr-timing

   **Total running time of the script:** (0 minutes 0.010 seconds)


.. _sphx_glr_download_11_demos_python_packages_numpy_demo_indexing.py:

.. only:: html

  .. container:: sphx-glr-footer sphx-glr-footer-example

    .. container:: sphx-glr-download sphx-glr-download-jupyter

      :download:`Download Jupyter notebook: demo_indexing.ipynb <demo_indexing.ipynb>`

    .. container:: sphx-glr-download sphx-glr-download-python

      :download:`Download Python source code: demo_indexing.py <demo_indexing.py>`

    .. container:: sphx-glr-download sphx-glr-download-zip

      :download:`Download zipped: demo_indexing.zip <demo_indexing.zip>`