--- conf.py
+++ conf.py
@@ -17,9 +17,9 @@
 
 # -- Project information -----------------------------------------------------
 
-project = "yams"
-copyright = "2020, Logilab"
-author = "Logilab"
+project = 'yams'
+copyright = '2020, Logilab'
+author = 'Logilab'
 
 
 # -- General configuration ---------------------------------------------------
@@ -28,19 +28,19 @@ author = "Logilab"
 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
 # ones.
 extensions = [
-    "sphinx.ext.autodoc",
+    'sphinx.ext.autodoc',
 ]
 
 # The master toctree document.
-master_doc = "index"
+master_doc = 'index'
 
 # Add any paths that contain templates here, relative to this directory.
-templates_path = ["_templates"]
+templates_path = ['_templates']
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
 # This pattern also affects html_static_path and html_extra_path.
-exclude_patterns = ["_build", "Thumbs.db", ".DS_Store"]
+exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
 
 
 # -- Options for HTML output -------------------------------------------------
@@ -48,9 +48,9 @@ exclude_patterns = ["_build", "Thumbs.db
 # The theme to use for HTML and HTML Help pages.  See the documentation for
 # a list of builtin themes.
 #
-html_theme = "alabaster"
+html_theme = 'alabaster'
 
 # 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"]
+html_static_path = ['_static']
