Get python options with _parse_help().

completions/python

@@ -39,8 +39,7 @@ _python()
     if [[ "$cur" != -* ]]; then
         _filedir '@(py|pyc|pyo)'
     else
-        COMPREPLY=( $( compgen -W "- -d -E -h -i -O -Q -S -t -u \
-            -U -v -V -W -x -c" -- "$cur" ) )
+        COMPREPLY=( $( compgen -W "$( _parse_help $1 -h )" -- "$cur" ) )
     fi
 
     return 0

test/lib/completions/python.exp

@@ -12,8 +12,9 @@ setup
 
 
 assert_complete_any "python "
+sync_after_int
 
-
+assert_complete_any "python -"
 sync_after_int