lf_kpi_csv.py added comment to use the default columns.

lf_kpi_csv.py added exception and traceback

Signed-off-by: Chuck SmileyRekiere <chuck.smileyrekiere@candelatech.com>

py-scripts/lf_kpi_csv.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+
 """
 NAME: lf_kpi_csv.py
 
@@ -23,6 +24,7 @@ INCLUDE_IN_README
 import csv
 import time
 import argparse
+import traceback
 
 '''
 Note teh delimiter for the kpi.csv is a tab
@@ -49,6 +51,8 @@ A blank entry is a valid entry in some cases.
 '''
 
 
+# NOTE, Passing in _kpi_headers only used for testing.
+# Do Not pass in headers , Please use the defaults
 class lf_kpi_csv:
     def __init__(self,
                 # NOTE, Passing in _kpi_headers only used for testing.
@@ -93,8 +97,9 @@ class lf_kpi_csv:
             self.kpi_file = open(kpifile, 'w')
             self.kpi_writer = csv.DictWriter(self.kpi_file, delimiter="\t", fieldnames=self.kpi_headers)
             self.kpi_writer.writeheader()
-        except:
+        except Exception as x:
             print("lf_kpi_csv.py: {} WARNING unable to open".format(self.kpi_file))
+            traceback.print_exception(Exception, x, x.__traceback__, chain=True)
 
         self.kpi_dict = dict()
         self.kpi_dict['Date'] = '{date}'.format(date=int(time.time()))