//- 💫 DOCS > USAGE

include ../../_includes/_mixins

p
    |  spaCy is compatible with #[strong 64-bit CPython 2.6+∕3.3+] and
    |  runs on #[strong Unix/Linux], #[strong macOS/OS X] and
    |  #[strong Windows]. The latest spaCy releases are
    |  available over #[+a("https://pypi.python.org/pypi/spacy") pip] (source
    |  packages only) and #[+a("https://anaconda.org/conda-forge/spacy") conda].
    |  Installation requires a working build environment. See notes on
    |  #[a(href="#source-ubuntu") Ubuntu], #[a(href="#source-osx") macOS/OS X]
    |  and #[a(href="#source-windows") Windows] for details.

+aside("Download models")
    |  After installation you need to download a language model. For more info
    |  and available models, see the #[+a("/docs/usage/models") docs on models].

    +code.o-no-block.
        python -m spacy.download en

        >>> import spacy
        >>> nlp = spacy.load('en')

+h(2, "pip") pip

p Using pip, spaCy releases are currently only available as source packages.

+code(false, "bash").
    pip install -U spacy

p
    |  When using pip it is generally recommended to install packages in a
    |  #[code virtualenv] to avoid modifying system state:

+code(false, "bash").
    virtualenv .env
    source .env/bin/activate
    pip install spacy

+h(2, "conda") conda

p
    |  Thanks to our great community, we've finally re-added conda support. You
    |  can now install spaCy via #[code conda-forge]:

+code(false, "bash").
    conda config --add channels conda-forge
    conda install spacy

p
    |  For the feedstock including the build recipe and configuration, check out
    |  #[+a("https://github.com/conda-forge/spacy-feedstock") this repository].
    |  Improvements and pull requests to the recipe and setup are always appreciated.

+h(2, "source") Compile from source

p
    |  The other way to install spaCy is to clone its
    |  #[+a(gh("spaCy")) GitHub repository] and build it from source. That is
    |  the common way if you want to make changes to the code base. You'll need to
    |  make sure that you have a development enviroment consisting of a Python
    |  distribution including header files, a compiler,
    |  #[+a("https://pip.pypa.io/en/latest/installing/") pip],
    |  #[+a("https://virtualenv.pypa.io/") virtualenv] and
    |  #[+a("https://git-scm.com") git] installed. The compiler part is the
    |  trickiest. How to do that depends on your system. See notes on
    |  #[a(href="#source-ubuntu") Ubuntu], #[a(href="#source-osx") OS X] and
    |  #[a(href="#source-windows") Windows] for details.

+code(false, "bash").
    # make sure you are using recent pip/virtualenv versions
    python -m pip install -U pip virtualenv
    git clone #{gh("spaCy")}
    cd spaCy

    virtualenv .env
    source .env/bin/activate
    pip install -r requirements.txt
    pip install -e .

p
    |  Compared to regular install via pip, #[+a(gh("spaCy", "requirements.txt")) requirements.txt]
    |  additionally installs developer dependencies such as Cython.

p
    |  Instead of the above verbose commands, you can also use the following
    |  #[+a("http://www.fabfile.org/") Fabric] commands:

+table(["Command", "Description"])
    +row
        +cell #[code fab env]
        +cell Create #[code virtualenv] and delete previous one, if it exists.

    +row
        +cell #[code fab make]
        +cell Compile the source.

    +row
        +cell #[code fab clean]
        +cell Remove compiled objects, including the generated C++.

    +row
        +cell #[code fab test]
        +cell Run basic tests, aborting after first failure.

p
    |  All commands assume that your #[code virtualenv] is located in a
    |  directory #[code .env]. If you're using a different directory, you can
    |  change it via the environment variable #[code VENV_DIR], for example:

+code(false, "bash").
    VENV_DIR=".custom-env" fab clean make

+h(3, "source-ubuntu") Ubuntu

p Install system-level dependencies via #[code apt-get]:

+code(false, "bash").
    sudo apt-get install build-essential python-dev git

+h(3, "source-osx") macOS / OS X

p
    |  Install a recent version of #[+a("https://developer.apple.com/xcode/") XCode],
    |  including the so-called "Command Line Tools". macOS and OS X ship with
    |  Python and git preinstalled. To compile spaCy with multi-threading support
    |  on macOS / OS X, #[+a("https://github.com/explosion/spaCy/issues/267") see here].

+h(3, "source-windows") Windows

p
    |  Install a version of
    |  #[+a("https://www.visualstudio.com/vs/visual-studio-express/") Visual Studio Express]
    |  that matches the version that was used to compile your Python
    |  interpreter. For official distributions these are:

+table([ "Distribution", "Version"])
    +row
        +cell Python 2.7
        +cell Visual Studio 2008

    +row
        +cell Python 3.4
        +cell Visual Studio 2010

    +row
        +cell Python 3.5
        +cell Visual Studio 2015

+h(2, "tests") Run tests

p
    |  spaCy comes with an #[+a(gh("spacy", "spacy/tests")) extensive test suite].
    |  First, find out where spaCy is installed:

+code(false, "bash").
    python -c "import os; import spacy; print(os.path.dirname(spacy.__file__))"

p
    |  Then run #[code pytest] on that directory. The flags #[code --vectors],
    |  #[code --slow] and #[code --model] are optional and enable additional
    |  tests:

+code(false, "bash").
    # make sure you are using recent pytest version
    python -m pip install -U pytest

    python -m pytest <spacy-directory> --vectors --model --slow