Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/9797#discussion_r45406499
--- Diff: ec2/spark_ec2.py ---
@@ -591,11 +591,15 @@ def launch_cluster(conn, opts, cluster_name):
# AWS ignores the AMI-specified block device mapping for M3 (see
SPARK-3342).
if opts.instance_type.startswith('m3.'):
+ if sys.version_info[0] >= 3:
+ letters = string.ascii_letters
--- End diff --
We only need to support Python 2.6+.
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