The default on Fedora 26 is Python 3.6

fabaff · fabaff · commit 23585871fbd1 · 2017-07-14T16:35:34.000+02:00
diff --git a/source/_docs/installation/fedora.markdown b/source/_docs/installation/fedora.markdown
@@ -33,7 +33,7 @@ Now switch to the new directory, setup the venv, and activate it.
 
 ```bash
 $ cd /opt/homeassistant
-$ pyvenv-3.5 .
+$ python3.6 -m venv .
 $ source bin/activate
 ```
 
