refactor 'if on_rtd'

Author: ulysses4ever

doc/conf.py

@@ -57,9 +57,13 @@
 # on_rtd is whether we are on readthedocs.org, this line of code grabbed from docs.readthedocs.org
 on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
 
-if not on_rtd:  # only import and set the theme if we're building docs locally
+html_theme = 'sphinx_rtd_theme'
+# only import the theme if we're building docs locally
+if on_rtd:
+    html_style = None
+    using_rtd_theme = True
+else:
     import sphinx_rtd_theme
-    html_theme = 'sphinx_rtd_theme'
     html_theme_path = [sphinx_rtd_theme.get_html_theme_path()]
 
 # The name for this set of Sphinx documents.  If None, it defaults to
@@ -84,10 +88,6 @@
 html_theme_options = {
     'collapse_navigation': False,
 }
-if on_rtd:  # only import and set the theme if we're building docs locally
-    html_theme = 'sphinx_rtd_theme'
-    html_style = None
-    using_rtd_theme = True
 
 
 # If true, an OpenSearch description file will be output, and all pages will