Installation#

sktime currently supports:

  • Python versions 3.7, 3.8, 3.9 and 3.10.

  • Operating systems Mac OS X, Unix-like OS, Windows 8.1 and higher

See here for a full list of precompiled wheels available on PyPI.

We appreciate community contributions towards compatibility with python 3.10, or other operating systems.

Release versions#

For frequent issues with installation, consult the Release versions - troubleshooting section.

Installing sktime from PyPI#

sktime releases are available via PyPI. To install sktime with core dependencies, excluding soft dependencies, via pip type:

pip install sktime

To install sktime with maximum dependencies, including soft dependencies, install with the all_extras modifier:

pip install sktime[all_extras]

Installing sktime from conda#

sktime releases are available via conda from conda-forge. To install sktime with core dependencies, excluding soft dependencies via conda type:

conda install -c conda-forge sktime

To install sktime with maximum dependencies, including soft dependencies, install with the all-extras recipe:

conda install -c conda-forge sktime-all-extras

Note: currently this does not include the dependency catch-22. As this package is not available on conda-forge, it must be installed via pip if desired. Contributions to remedy this situation are appreciated.

Release versions - troubleshooting#

Module not found#

The most frequent reason for module not found errors is installing sktime with minimum dependencies and using an estimator which interfaces a package that has not been installed in the environment. To resolve this, install the missing package, or install sktime with maximum dependencies (see above).

Development versions#

To install the latest development version of sktime, or earlier versions, the sequence of steps is as follows:

Step 1 - git clone the sktime repository, the latest version or an earlier version. Step 2 - ensure build requirements are satisfied Step 3 - pip install the package from a git clone, with the editable parameter.

Detail instructions for all steps are given below. For brevity, we discuss steps 1 and 3 first; step 2 is discussed at the end, as it will depend on the operating system.

Step 1 - clone the git repository#

The sktime repository should be cloned to a local directory, using a graphical user interface, or the command line.

Using the git command line, the sequence of commands to install the latest version is as follows:

git clone https://github.com/alan-turing-institute/sktime.git
cd sktime
git checkout main
git pull

To build a previous version, replace line 3 with:

git checkout <VERSION>

This will checkout the code for the version <VERSION>, where <VERSION> is a valid version string. Valid version strings are the repository’s git tags, which can be inspected by running git tag.

You can also download a zip archive of the version from GitHub.

Step 2 - satisfying build requirements#

Before carrying out step 3, the sktime build requirements need to be satisfied. Details for this differ by operating system, and can be found in the sktime build requirements section below.

Typically, the set-up steps needs to be carried out only once per system.

Step 3 - building sktime from source#

To build and install sktime from source, navigate to the local clone’s root directory and type:

pip install .

Alternatively, the . may be replaced with a full or relative path to the root directory.

For a developer install that updates the package each time the local source code is changed, install sktime in editable mode, via:

pip install --editable .[dev]

This allows editing and extending the code in-place. See also pip reference on editable installs).

Note

You will have to re-run:

pip install --editable .

every time the source code of a compiled extension is changed (for instance when switching branches or pulling changes from upstream).

Building binary packages and installers#

The .whl package and .exe installers can be built with:

pip install build
python -m build --wheel

The resulting packages are generated in the dist/ folder.

sktime build requirements#

This section outlines the sktime build requirements. These are required for:

  • installing sktime from source, e.g., development versions

  • the advanced developer set-up

You now need to set up a new python virtual environment. Our instructions will go through the commands to set up a conda environment which is recommended for sktime development. This relies on an anaconda installation. The process will be similar for venv or other virtual environment managers.

In the anaconda prompt terminal:

  1. Navigate to your local sktime folder cd sktime

  2. Create new environment with python 3.8: conda create -n sktime-dev python=3.8

    Warning

    If you already have an environment called “sktime-dev” from a previous attempt you will first need to remove this

  3. Activate the environment: conda activate sktime-dev

  4. Build an editable version of sktime pip install -e .[all_extras,dev]

  5. If everything has worked you should see message “successfully installed sktime”

Some users have experienced issues when installing NumPy, particularly version 1.19.4.

Note

If step 4. results in a “no matches found” error, it may be due to how your shell handles special characters.

  • Possible solution: use quotation marks:

    pip install -e ."[all_extras,dev]"

Note

Another option under Windows is to follow the instructions for `Unix-like OS`_, using the Windows Subsystem for Linux (WSL). For installing WSL, follow the instructions here.

References#

The installation instruction are adapted from scikit-learn’s advanced installation instructions.