diff --git a/README.rst b/README.rst index 1ed5f656b63..493134e7f7d 100644 --- a/README.rst +++ b/README.rst @@ -77,22 +77,25 @@ and as part of `PyMCon 2020 `__ Installation ============ -The latest release of PyMC3 can be installed from PyPI using ``pip``: +PyMC3 Installation +------------------ -:: +The latest release of PyMC3 can be installed from Conda Forge (conda-forge): - pip install pymc3 +:: -**Note:** Running ``pip install pymc`` will install PyMC 2.3, not PyMC3, -from PyPI. + conda install -c conda-forge pymc3 -Or via conda-forge: +While strongly discouraged due to installation problems you could try to install PyMC3 and its dependencies via PyPI using ``pip``: :: - conda install -c conda-forge pymc3 + pip install pymc3 -Plotting is done using `ArviZ `__ - if you follow the installation instructions above, then it will be installed alongside ``PyMC3``. +The reason installation via PyPI is difficult, especially on Windows and OSX, is that ``Theano`` requires compilation against MKL, which is difficult to set up, while Conda comes with its own compilers and MKL installation. +.. note:: + + Running ``pip install pymc`` will install PyMC 2.3, not PyMC3, from PyPI. The current development branch of PyMC3 can be installed from GitHub, also using ``pip``: @@ -100,9 +103,25 @@ The current development branch of PyMC3 can be installed from GitHub, also using pip install git+https://github.com/pymc-devs/pymc3 -To ensure the development branch of Theano is installed alongside PyMC3 -(recommended), you can install PyMC3 using the ``requirements.txt`` -file. This requires cloning the repository to your computer: +Make sure to install the `Theano-PyMC `__ version that is pegged in ``PyMC3``'s ``requirements.txt``. +For more information, see the `Theano-PyMC `__ Installation section, below. + +Lastly, another option is to clone the repository and install PyMC3 using +``python setup.py install`` or ``python setup.py develop``. + +Theano-PyMC Installation +------------------------ + +PyMC3 is tested on Python 3.6, 3.7, and 3.8 and depends on NumPy, SciPy, and pandas +(see `requirements.txt `__ for version +information). + +Moreover, as of Late 2020, PyMC3 now requires `Theano-PyMC `__ instead of `Theano `__. + +That being said, you can install PyMC3 using the ``requirements.txt`` +file. + +This requires cloning the repository to your computer: :: @@ -110,20 +129,22 @@ file. This requires cloning the repository to your computer: cd pymc3 pip install -r requirements.txt -However, if a recent version of Theano has already been installed on -your system, you can install PyMC3 directly from GitHub. +.. note:: -Another option is to clone the repository and install PyMC3 using -``python setup.py install`` or ``python setup.py develop``. + * If you have Theano installed, please remove it and install Theano-PyMC via Conda Forge, seen below: + ``conda remove theano`` -Dependencies -============ + * If you have an outdated version of Theano-PyMC, then re-install the module via Conda Forge: -PyMC3 is tested on Python 3.6, 3.7, and 3.8 and depends on `Theano-PyMC `__, -NumPy, SciPy, and pandas -(see `requirements.txt `__ for version -information). + ``conda remove theano-pymc -y`` + + ``conda install -c conda-forge theano-pymc -y`` + +Arviz Installation +------------------ + +Plotting is done using `ArviZ `__ - if you follow the installation instructions above, then it will be installed alongside ``PyMC3``. Optional -------- diff --git a/docs/source/index.rst b/docs/source/index.rst index a79fea8854c..053e1962f14 100644 --- a/docs/source/index.rst +++ b/docs/source/index.rst @@ -54,13 +54,6 @@ conda install -c conda-forge pymc3 -.. raw:: html - -

Via pypi:

- -.. code-block:: bash - - pip install pymc3 .. raw:: html