Add .readthedocs file and docs folder (#6)

.readthedocs.yaml

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+version: "2"
+
+build:
+  os: "ubuntu-22.04"
+  tools:
+    python: "3.10"
+
+sphinx:
+  configuration: docs/source/conf.py
+
+formats: all

docs/Makefile

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+# Minimal makefile for Sphinx documentation
+#
+
+# You can set these variables from the command line, and also
+# from the environment for the first two.
+SPHINXOPTS    ?=
+SPHINXBUILD   ?= sphinx-build
+SOURCEDIR     = source
+BUILDDIR      = build
+
+# Put it first so that "make" without argument is like "make help".
+help:
+	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
+
+.PHONY: help Makefile
+
+# Catch-all target: route all unknown targets to Sphinx using the new
+# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
+%: Makefile
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

docs/make.bat

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+@ECHO OFF
+
+pushd %~dp0
+
+REM Command file for Sphinx documentation
+
+if "%SPHINXBUILD%" == "" (
+	set SPHINXBUILD=sphinx-build
+)
+set SOURCEDIR=source
+set BUILDDIR=build
+
+if "%1" == "" goto help
+
+%SPHINXBUILD% >NUL 2>NUL
+if errorlevel 9009 (
+	echo.
+	echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
+	echo.installed, then set the SPHINXBUILD environment variable to point
+	echo.to the full path of the 'sphinx-build' executable. Alternatively you
+	echo.may add the Sphinx directory to PATH.
+	echo.
+	echo.If you don't have Sphinx installed, grab it from
+	echo.http://sphinx-doc.org/
+	exit /b 1
+)
+
+%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+goto end
+
+:help
+%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS% %O%
+
+:end
+popd

docs/requirements.txt

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+sphinx==7.1.2
+sphinx-rtd-theme==1.3.0rc1

docs/source/api.rst

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+API
+===
+
+.. autosummary::
+   :toctree: generated
+
+   lumache

docs/source/conf.py

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+# Configuration file for the Sphinx documentation builder.
+
+# -- Project information
+
+project = 'Lumache'
+copyright = '2021, Graziella'
+author = 'Graziella'
+
+release = '0.1'
+version = '0.1.0'
+
+# -- General configuration
+
+extensions = [
+    'sphinx.ext.duration',
+    'sphinx.ext.doctest',
+    'sphinx.ext.autodoc',
+    'sphinx.ext.autosummary',
+    'sphinx.ext.intersphinx',
+]
+
+intersphinx_mapping = {
+    'python': ('https://docs.python.org/3/', None),
+    'sphinx': ('https://www.sphinx-doc.org/en/master/', None),
+}
+intersphinx_disabled_domains = ['std']
+
+templates_path = ['_templates']
+
+# -- Options for HTML output
+
+html_theme = 'sphinx_rtd_theme'
+
+# -- Options for EPUB output
+epub_show_urls = 'footnote'

docs/source/index.rst

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+Welcome to Lumache's documentation!
+===================================
+
+**Lumache** (/lu'make/) is a Python library for cooks and food lovers
+that creates recipes mixing random ingredients.
+It pulls data from the `Open Food Facts database <https://world.openfoodfacts.org/>`_
+and offers a *simple* and *intuitive* API.
+
+Check out the :doc:`usage` section for further information, including
+how to :ref:`installation` the project.
+
+.. note::
+
+   This project is under active development.
+
+Contents
+--------
+
+.. toctree::
+
+   usage
+   api

docs/source/usage.rst

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+Usage
+=====
+
+.. _installation:
+
+Installation
+------------
+
+To use Lumache, first install it using pip:
+
+.. code-block:: console
+
+   (.venv) $ pip install lumache
+
+Creating recipes
+----------------
+
+To retrieve a list of random ingredients,
+you can use the ``lumache.get_random_ingredients()`` function:
+
+.. autofunction:: lumache.get_random_ingredients
+
+The ``kind`` parameter should be either ``"meat"``, ``"fish"``,
+or ``"veggies"``. Otherwise, :py:func:`lumache.get_random_ingredients`
+will raise an exception.
+
+.. autoexception:: lumache.InvalidKindError
+
+For example:
+
+>>> import lumache
+>>> lumache.get_random_ingredients()
+['shells', 'gorgonzola', 'parsley']
+