Merge pull request #2417 from effigies/fix-slurmgraph-sbatch_default_arg

FIX: Default value for sbatch_args (SLURMGraph)

Author: effigies

nipype/pipeline/plugins/slurmgraph.py

@@ -44,6 +44,7 @@ class SLURMGraphPlugin(GraphPluginBase):
     _template = "#!/bin/bash"
 
     def __init__(self, **kwargs):
+        self._sbatch_args = ''
         if 'plugin_args' in kwargs and kwargs['plugin_args']:
             if 'retry_timeout' in kwargs['plugin_args']:
                 self._retry_timeout = kwargs['plugin_args']['retry_timeout']