Make sure we only check the length of args.server if it's truthy
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@ -1718,7 +1718,7 @@ def shell():
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'be an int' % ', '.join('%s' % s for s in args.server)
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)
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if len(args.server) == 1:
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if args.server and len(args.server) == 1:
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printer('Retrieving information for the selected server...', quiet)
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else:
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printer('Selecting best server based on ping...', quiet)
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