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IPython: Productive Interactive Computing
Welcome to IPython. Our full documentation is available on
ipython.readthedocs.io <https://ipython.readthedocs.io/en/stable/>_ and contains information on how to install, use and
contribute to the project.
IPython versions and Python Support
IPython 6 requires Python version 3.3 and above.
IPython 5.x LTS is the compatible release for Python 2.7.
If you require Python 2 support, you must use IPython 5.x LTS. Please
update your project configurations and requirements as necessary.
The Notebook, Qt console and a number of other pieces are now parts of Jupyter.
Jupyter installation docs <http://jupyter.readthedocs.io/en/latest/install.html>__
if you want to use these.
Development and Instant running
You can find the latest version of the development documentation on
You can run IPython from this directory without even installing it system-wide
by typing at the terminal::
$ python -m IPython
Or see the
development installation docs <http://ipython.readthedocs.io/en/latest/install/install.html#installing-the-development-version>_
for the latest revision on read the docs.
Documentation and installation instructions for older version of IPython can be
found on the
IPython website <http://ipython.org/documentation.html>_
IPython requires Python version 3 or above
Starting with version 6.0, IPython does not support Python 2.7, 3.0, 3.1, or
For a version compatible with Python 2.7, please install the 5.x LTS Long Term
If you are encountering this error message you are likely trying to install or
use IPython from source. You need to checkout the remote 5.x branch. If you are
using git the following should work:
$ git fetch origin
$ git checkout 5.x
If you encounter this error message with a regular install of IPython, then you
likely need to update your package manager, for example if you are using
check the version of pip with
$ pip --version
You will need to update pip to the version 9.0.1 or greater. If you are not using
pip, please inquiry with the maintainers of the package for your package
For more information see one of our blog posts:
As well as the following Pull-Request for discussion:
This error does also occur if you are invoking
setup.py directly – which you
should not – or are using
easy_install If this is the case, use
pip install . (instead of
setup.py install , and
pip install -e . instead
setup.py develop If you are depending on IPython as a dependency you may
also want to have a conditional dependency on IPython depending on the Python
install_req = ['ipython'] if sys.version_info < 3 and 'bdist_wheel' not in sys.argv: install_req.remove('ipython') install_req.append('ipython<6') setup( ... install_requires=install_req )