From 75661ae5ff312032b46cdd9a27b2384c09ebaab3 Mon Sep 17 00:00:00 2001
From: Riccardo Murri <riccardo.murri@gmail.com>
Date: Tue, 22 Nov 2016 21:03:58 +0100
Subject: [PATCH] Use `try`/`except` instead of testing for attribute
 existence.

"It's better to ask forgiveness than permission", or so they say.
---
 gc3libs/cmdline.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/gc3libs/cmdline.py b/gc3libs/cmdline.py
index 6a8ab924..fbd2232c 100755
--- a/gc3libs/cmdline.py
+++ b/gc3libs/cmdline.py
@@ -1031,9 +1031,12 @@ def _fix_output_dir(self, task, name):
         except AttributeError:
             # no subtasks
             pass
-        if 'task' in task:
+        try:
             # RetryableTask
             self._fix_output_dir(task.task, name)
+        except AttributeError:
+            # not a RetryableTask
+            pass
 
     def setup_common_options(self, parser):
         # 1. job requirements