From b7ad346971a94eca1f63dd9729fb122707ae10fe Mon Sep 17 00:00:00 2001
From: Nicolas Palopoli <nicopalo@gmail.com>
Date: Fri, 23 Nov 2018 18:59:07 +0100
Subject: [PATCH] added missing title

Added missing title to Challenge, as derived from corresponding section in 06-loops-and-functions.md
---
 _extras/guide.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/_extras/guide.md b/_extras/guide.md
index 444ec4bb7..c9de6bd77 100644
--- a/_extras/guide.md
+++ b/_extras/guide.md
@@ -533,6 +533,8 @@ yearly_data_arg_test(surveys_df, end_year=2001)
 ~~~
 {: .language-python}
 
+### Functions Modifications Challenges
+
 * Rewrite the `one_year_csv_writer` and `yearly_data_csv_writer` functions to have keyword arguments with default values.
 
 ~~~