[1.6.x] Fixed #20224 -- Update docs examples which mention __unicode__

Thanks Marc Tamlyn and Tim Graham for the review.
Backport of 7442eb1a24 from master.

1 files changed, 4 insertions, 2 deletions

diff --git a/docs/ref/utils.txt b/docs/ref/utils.txt
index 8d722829fb..15f65c121f 100644
--- a/docs/ref/utils.txt
+++ b/docs/ref/utils.txt
@@ -471,12 +471,14 @@ Atom1Feed
         def fancy_utility_function(s, ...):
             # Do some conversion on string 's'
             ...
+        # Replace unicode by str on Python 3
         fancy_utility_function = allow_lazy(fancy_utility_function, unicode)
 
     The ``allow_lazy()`` decorator takes, in addition to the function to decorate,
     a number of extra arguments (``*args``) specifying the type(s) that the
-    original function can return. Usually, it's enough to include ``unicode`` here
-    and ensure that your function returns only Unicode strings.
+    original function can return. Usually, it's enough to include ``unicode``
+    (or ``str`` on Python 3) here and ensure that your function returns only
+    Unicode strings.
 
     Using this decorator means you can write your function and assume that the
     input is a proper string, then add support for lazy translation objects at the