# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1483974083 -3600
# Node ID 8daf9478524150b540b902e05b3bf6490b1b4a59
# Parent  f07eddb94ab1e58a3b0eae23af3ca4a7f32a9fa7
Added a docstring.

diff -r f07eddb94ab1 -r 8daf94785241 importer.py
--- a/importer.py	Mon Jan 09 00:41:45 2017 +0100
+++ b/importer.py	Mon Jan 09 16:01:23 2017 +0100
@@ -115,6 +115,9 @@
         self.make_cache()
 
     def make_cache(self):
+
+        "Make a cache directory if it does not already exist."
+
         if self.cache and not exists(self.cache):
             makedirs(self.cache)