From: Diane Trout <diane@ghic.org>
Date: Fri, 20 Mar 2015 21:45:29 +0000 (-0700)
Subject: Use max on the iterator to find the last key
X-Git-Url: http://woldlab.caltech.edu/gitweb/?p=htsworkflow.git;a=commitdiff_plain;h=64eab6ef26d382df660a8ab20c7fc5f3fc89edee

Use max on the iterator to find the last key
---

diff --git a/htsworkflow/pipelines/genome_mapper.py b/htsworkflow/pipelines/genome_mapper.py
index 4f57bbb..62619e2 100644
--- a/htsworkflow/pipelines/genome_mapper.py
+++ b/htsworkflow/pipelines/genome_mapper.py
@@ -88,11 +88,10 @@ class constructMapperDict(object):
           builds = self.genome_dict[elements[0]]
 
           # sort build names the way humans would
-          keys = builds.keys()
-          keys.sort(key=natural_sort_key)
+          last_key = max(builds, key=natural_sort_key)
 
           # return the path from the 'last' build name
-          return builds[keys[-1]]
+          return builds[last_key]
 
         elif len(elements) == 2:
           # we have species, and build name