Make our SUFFIX default selection py2/3 compatible (#5251)

readthedocs · Feb 7, 2019 · 9ecd70c · 9ecd70c
1 parent 87a2b0e
commit 9ecd70c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/readthedocs/doc_builder/templates/doc_builder/conf.py.tmpl b/readthedocs/doc_builder/templates/doc_builder/conf.py.tmpl
@@ -32,7 +32,7 @@ if globals().get('source_suffix', False):
         SUFFIX = source_suffix[0]
     elif isinstance(source_suffix, dict):
         # Sphinx >= 1.8 supports a mapping dictionary for mulitple suffixes
-        SUFFIX = source_suffix.keys()[0]
+        SUFFIX = list(source_suffix.keys())[0]  # make a ``list()`` for py2/py3 compatibility
     else:
         # default to .rst
         SUFFIX = '.rst'