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-rw-r--r--Doc/tutorial/controlflow.rst3
1 files changed, 2 insertions, 1 deletions
diff --git a/Doc/tutorial/controlflow.rst b/Doc/tutorial/controlflow.rst
index 5a182a9..5d815d6 100644
--- a/Doc/tutorial/controlflow.rst
+++ b/Doc/tutorial/controlflow.rst
@@ -266,8 +266,9 @@ like in C, procedures are just functions that don't return a value. In fact,
technically speaking, procedures do return a value, albeit a rather boring one.
This value is called ``None`` (it's a built-in name). Writing the value
``None`` is normally suppressed by the interpreter if it would be the only value
-written. You can see it if you really want to::
+written. You can see it if you really want to using :keyword:`print`::
+ >>> fib(0)
>>> print(fib(0))
None