Read the Docs Is an online document hosting service that allows you to import documents from various version control systems.In general, this is ideal for writing software documents, tutorials, e-books, and so on.

Sphinx

Sphinx is a Python-based document generation project that was originally used to generate official Python documents. With the improvement of tools, more and more well-known projects use Sphinx to generate documents. It can even be used to write books using reStructuredText as the document writing language, but other formats can also be supported through modules.

Install Sphinx

pip install sphinx sphinx-autobuild sphinx_rtd_theme

Initialization

# Create Document Root Directory
mkdir -p /root/work/scrapy-cookbook
cd scrapy-cookbook/
# Enter can be written in default configuration
sphinx-quickstart

When initializing, you can basically choose the default, there are a few points to note:

> Separate source and build directories (y/n) [n]:y
> Project name: scrapy-cookbook
> Author name(s): Name
> Project version []: 1.0
> Project release [1.0]: 1.0
> Project language [en]: zh_CN

Add an article

Create a new hello.rst as follows:

hello,world
=============

ndex.rst is modified as follows:

Contents:
.. toctree::
   :maxdepth: 2

   hello

Notice the empty line.

Change theme sphinx_rtd_theme

Change conf.py:

import sphinx_rtd_theme
html_theme = "sphinx_rtd_theme"
html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]

Preview Effect

Then execute make html in a different directory, enter the build/html directory, and open index.html with your browser.

Support markdown writing

adopt recommonmark To support markdown

pip install recommonmark

Then change conf.py:

from recommonmark.parser import CommonMarkParser
source_parsers = {
    '.md': CommonMarkParser,
}
source_suffix = ['.rst', '.md']

AutoStructify

If you want to use advanced functionality, you can add the AutoStructify configuration and add in conf.py:

# At top on conf.py (with other import statements)
import recommonmark
from recommonmark.transform import AutoStructify

# At the bottom of conf.py
def setup(app):
    app.add_config_value('recommonmark_config', {
            'url_resolver': lambda url: github_doc_root + url,
            'auto_toc_tree_section': 'Contents',
            }, True)
    app.add_transform(AutoStructify)

The following configurations can be used directly:

# -*- coding: utf-8 -*-
#
# Recommonmark documentation build configuration file, created by
# sphinx-quickstart on Tue Jul 28 11:17:27 2015.
#
# This file is execfile()d with the current directory set to its
# containing dir.
#
# Note that not all possible configuration values are present in this
# autogenerated file.
#
# All configuration values have a default; values that are commented out
# serve to show the default.

import sys
import os
import shlex

# If extensions (or modules to document with autodoc) are in another directory,
# add these directories to sys.path here. If the directory is relative to the
# documentation root, use os.path.abspath to make it absolute, like shown here.
sys.path.insert(0, os.path.abspath('..'))
import recommonmark
from recommonmark.transform import AutoStructify


source_suffix = ['.rst', '.md']

# -- General configuration ------------------------------------------------

# If your documentation needs a minimal Sphinx version, state it here.
#needs_sphinx = '1.0'

# Add any Sphinx extension module names here, as strings. They can be
# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
# ones.
extensions = [
    'sphinx.ext.autodoc',
    'sphinx.ext.napoleon',
    'sphinx.ext.mathjax',
    'recommonmark',
]

# Add any paths that contain templates here, relative to this directory.
templates_path = ['_templates']

# The encoding of source files.
#source_encoding = 'utf-8-sig'

# The master toctree document.
master_doc = 'index'

# General information about the project.
project = u'Recommonmark'
copyright = u'2015, Luca Barbato, Eric Holscher, and contributors'
author = u'Luca Barbato, Eric Holscher, and contributors'

github_doc_root = 'https://github.com/rtfd/recommonmark/tree/master/docs/'

# The version info for the project you're documenting, acts as replacement for
# |version| and |release|, also used in various other places throughout the
# built documents.
#
# The short X.Y version.
version = recommonmark.__version__
# The full version, including alpha/beta/rc tagss
release = recommonmark.__version__

# The language for content autogenerated by Sphinx. Refer to documentation
# for a list of supported languages.
#
# This is also used if you do content translation via gettext catalogs.
# Usually you set "language" from the command line for these cases.
language = None

# There are two options for replacing |today|: either, you set today to some
# non-false value, then it is used:
#today = ''
# Else, today_fmt is used as the format for a strftime call.
#today_fmt = '%B %d, %Y'

# List of patterns, relative to source directory, that match files and
# directories to ignore when looking for source files.
exclude_patterns = ['_build']

# The reST default role (used for this markup: `text`) to use for all
# documents.
default_role = None

# If true, '()' will be appended to :func: etc. cross-reference text.
#add_function_parentheses = True

# If true, the current module name will be prepended to all description
# unit titles (such as .. function::).
#add_module_names = True

# If true, sectionauthor and moduleauthor directives will be shown in the
# output. They are ignored by default.
#show_authors = False

# The name of the Pygments (syntax highlighting) style to use.
pygments_style = 'sphinx'

# A list of ignored prefixes for module index sorting.
#modindex_common_prefix = []

# If true, keep warnings as "system message" paragraphs in the built documents.
#keep_warnings = False

# If true, `todo` and `todoList` produce output, else they produce nothing.
todo_include_todos = False


# -- Options for HTML output ----------------------------------------------

# The theme to use for HTML and HTML Help pages.  See the documentation for
# a list of builtin themes.
html_theme = 'sphinx_rtd_theme'

# Theme options are theme-specific and customize the look and feel of a theme
# further.  For a list of options available for each theme, see the
# documentation.
#html_theme_options = {}

# Add any paths that contain custom themes here, relative to this directory.
#html_theme_path = []

# The name for this set of Sphinx documents.  If None, it defaults to
# "<project> v<release> documentation".
#html_title = None

# A shorter title for the navigation bar.  Default is the same as html_title.
#html_short_title = None

# The name of an image file (relative to this directory) to place at the top
# of the sidebar.
#html_logo = None

# The name of an image file (within the static path) to use as favicon of the
# docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
# pixels large.
#html_favicon = None

# Add any paths that contain custom static files (such as style sheets) here,
# relative to this directory. They are copied after the builtin static files,
# so a file named "default.css" will overwrite the builtin "default.css".
html_static_path = ['_static']

# Add any extra paths that contain custom files (such as robots.txt or
# .htaccess) here, relative to this directory. These files are copied
# directly to the root of the documentation.
#html_extra_path = []

# If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
# using the given strftime format.
#html_last_updated_fmt = '%b %d, %Y'

# If true, SmartyPants will be used to convert quotes and dashes to
# typographically correct entities.
#html_use_smartypants = True

# Custom sidebar templates, maps document names to template names.
#html_sidebars = {}

# Additional templates that should be rendered to pages, maps page names to
# template names.
#html_additional_pages = {}

# If false, no module index is generated.
#html_domain_indices = True

# If false, no index is generated.
#html_use_index = True

# If true, the index is split into individual pages for each letter.
#html_split_index = False

# If true, links to the reST sources are added to the pages.
#html_show_sourcelink = True

# If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
#html_show_sphinx = True

# If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
#html_show_copyright = True

# If true, an OpenSearch description file will be output, and all pages will
# contain a <link> tag referring to it.  The value of this option must be the
# base URL from which the finished HTML is served.
#html_use_opensearch = ''

# This is the file name suffix for HTML files (e.g. ".xhtml").
#html_file_suffix = None

# Language to be used for generating the HTML full-text search index.
# Sphinx supports the following languages:
#   'da', 'de', 'en', 'es', 'fi', 'fr', 'hu', 'it', 'ja'
#   'nl', 'no', 'pt', 'ro', 'ru', 'sv', 'tr'
#html_search_language = 'en'

# A dictionary with options for the search language support, empty by default.
# Now only 'ja' uses this config value
#html_search_options = {'type': 'default'}

# The name of a javascript file (relative to the configuration directory) that
# implements a search results scorer. If empty, the default will be used.
#html_search_scorer = 'scorer.js'

# Output file base name for HTML help builder.
htmlhelp_basename = 'Recommonmarkdoc'

# -- Options for LaTeX output ---------------------------------------------

latex_elements = {
# The paper size ('letterpaper' or 'a4paper').
#'papersize': 'letterpaper',

# The font size ('10pt', '11pt' or '12pt').
#'pointsize': '10pt',

# Additional stuff for the LaTeX preamble.
#'preamble': '',

# Latex figure (float) alignment
#'figure_align': 'htbp',
}

# Grouping the document tree into LaTeX files. List of tuples
# (source start file, target name, title,
#  author, documentclass [howto, manual, or own class]).
latex_documents = [
  (master_doc, 'Recommonmark.tex', u'Recommonmark Documentation',
   u'Lu Zero, Eric Holscher, and contributors', 'manual'),
]

# The name of an image file (relative to this directory) to place at the top of
# the title page.
#latex_logo = None

# For "manual" documents, if this is true, then toplevel headings are parts,
# not chapters.
#latex_use_parts = False

# If true, show page references after internal links.
#latex_show_pagerefs = False

# If true, show URL addresses after external links.
#latex_show_urls = False

# Documents to append as an appendix to all manuals.
#latex_appendices = []

# If false, no module index is generated.
#latex_domain_indices = True


# -- Options for manual page output ---------------------------------------

# One entry per manual page. List of tuples
# (source start file, name, description, authors, manual section).
man_pages = [
    (master_doc, 'recommonmark', u'Recommonmark Documentation',
     [author], 1)
]

# If true, show URL addresses after external links.
#man_show_urls = False


# -- Options for Texinfo output -------------------------------------------

# Grouping the document tree into Texinfo files. List of tuples
# (source start file, target name, title, author,
#  dir menu entry, description, category)
texinfo_documents = [
  (master_doc, 'Recommonmark', u'Recommonmark Documentation',
   author, 'Recommonmark', 'One line description of project.',
   'Miscellaneous'),
]

# Documents to append as an appendix to all manuals.
#texinfo_appendices = []

# If false, no module index is generated.
#texinfo_domain_indices = True

# How to display URL addresses: 'footnote', 'no', or 'inline'.
#texinfo_show_urls = 'footnote'

# If true, do not generate a @detailmenu in the "Top" node's menu.
#texinfo_no_detailmenu = False

# app setup hook
def setup(app):
    app.add_config_value('recommonmark_config', {
        #'url_resolver': lambda url: github_doc_root + url,
        'auto_toc_tree_section': 'Contents',
        'enable_math': False,
        'enable_inline_math': False,
        'enable_eval_rst': True,
        'enable_auto_doc_ref': True,
    }, True)
    app.add_transform(AutoStructify)

GitHub Hosting

The general practice is to host the document on a version control system such as github, and publish the push source code to readthedoc automatically. This will provide both version control benefits and automatic publishing to readthedoc, which is really convenient.
The specific steps are very simple, refer to the official documentation: https://github.com/rtfd/readthedocs.org:

• Register an account on Read the Docs
• Click Import when you log in.
• Fill in a name such as "scrapy-cookbook" for the document item, add your project HTTPS link on GitHub, and choose the warehouse type Git
• Other items will be automatically deactivated when they are created, instead of GitHub settings
• Everything is done. From now on, the documents on readthedoc will be updated automatically whenever you push the code to this repository.