added a nice link to the functions page. and a typi fix

izissise · Oct 27, 2018 · dfaeaa9 · dfaeaa9
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diff --git a/source/exercises/string_formatting.rst b/source/exercises/string_formatting.rst
@@ -120,7 +120,7 @@ It will look like:
   def formatter(in_tuple):
       do_something_here_to_make_a_format_string
 
-      return form_string.format(in_tuple)
+      return form_string.format(*in_tuple)
 
 
 Task Four

diff --git a/source/modules/Functions.rst b/source/modules/Functions.rst
@@ -233,6 +233,12 @@ B) If not, then it does a computation using the same function with another value
 
 It is critical that the first check is there, or the function will never terminate.
 
+Further Reading
+---------------
+
+Here's a nice blog post about writting better functions:
+
+https://jeffknupp.com/blog/2018/10/11/write-better-python-functions/