Try/Catch blocks in checks only work with generic Exceptions. Cannot catch specific exceptions

[rajatparida86]

No description provided.

[rajatparida86]

When we try the following in a check:
try:
success_value = meters[key]["m5_rate"]
except KeyError
pass

Error that we get:
"Traceback (most recent call last):\n File "/usr/local/lib/python2.7/dist-packages/zmon_worker-0.1-py2.7.egg/zmon_worker_monitor/zmon_worker/tasks/main.py", line 1248, in _get_check_result_internal\n result = safe_eval(cmd, eval_source='', **ctx)\n File "/usr/local/lib/python2.7/dist-packages/zmon_worker-0.1-py2.7.egg/zmon_worker_monitor/zmon_worker/common/eval.py", line 187, in safe_eval\n return c() # if a function will return another callable, we will not call it\n File "", line 14, in check\nNameError: global name 'KeyError' is not defined\n"