Do not use `len(SEQUENCE)` to determine if a sequence is empty

Change-Id: Iad6832e7b9d468bc8ce73cb728bb983941f7a61c
Issue-ID: INT-1482
Signed-off-by: Bartek Grzybowski <b.grzybowski@partner.samsung.com>

3 files changed, 5 insertions, 6 deletions

diff --git a/tutorials/vFWDT/workflow/workflow.py b/tutorials/vFWDT/workflow/workflow.py
index 60545695..8703be73 100755
--- a/tutorials/vFWDT/workflow/workflow.py
+++ b/tutorials/vFWDT/workflow/workflow.py
@@ -188,7 +188,7 @@ def _get_aai_rel_link_data(data, related_to, search_key=None, match_dict=None):
                         response.append(
                             {"link": link, "d_value": dval}
                         )
-    if len(response) == 0:
+    if response:
         response.append(
             {"link": None, "d_value": None}
         )
diff --git a/vnfs/VES5.0/evel/evel-test-collector/code/collector/collector.py b/vnfs/VES5.0/evel/evel-test-collector/code/collector/collector.py
index 6fadd46f..6565e43a 100644
--- a/vnfs/VES5.0/evel/evel-test-collector/code/collector/collector.py
+++ b/vnfs/VES5.0/evel/evel-test-collector/code/collector/collector.py
@@ -526,7 +526,7 @@ USAGE
             raise RuntimeError('Invalid Vendor Event Listener port ({0}) '
                                'specified'.format(vel_port))
 
-        if (len(vel_path) > 0 and vel_path[-1] != '/'):
+        if (vel_path and vel_path[-1] != '/'):
             logger.warning('Event Listener Path ({0}) should have terminating '
                            '"/"!  Adding one on to configured string.'.format(
                                                                      vel_path))
@@ -590,8 +590,7 @@ USAGE
                    format(vel_path,
                           api_version,
                           '/' + vel_topic_name
-                          if len(vel_topic_name) > 0
-                          else '')
+                          if vel_topic_name else '')
         throttle_url = '/{0}eventListener/v{1}/clientThrottlingState'.\
                        format(vel_path, api_version)
         batch_url = '/{0}eventListener/v{1}/eventBatch'.\
diff --git a/vnfs/VES5.0/evel/evel-test-collector/code/collector/test_control.py b/vnfs/VES5.0/evel/evel-test-collector/code/collector/test_control.py
index 72f53fb2..5d7394e1 100644
--- a/vnfs/VES5.0/evel/evel-test-collector/code/collector/test_control.py
+++ b/vnfs/VES5.0/evel/evel-test-collector/code/collector/test_control.py
@@ -43,9 +43,9 @@ def command_interval(interval):
 def command_throttle(domain, fields, pairs):
     "return a throttlingSpecification"
     throttle_spec = {'eventDomain' : domain}
-    if len(fields):
+    if fields:
         throttle_spec['suppressedFieldNames'] = fields
-    if len(pairs):
+    if pairs:
         throttle_spec['suppressedNvPairsList'] = pairs
     return {'command':
             {'commandType': 'throttlingSpecification',