I’m trying use a Gateway Event Script to create a 16-digit randomly generated string every 10 seconds.
My script looks like:
import string
import random
def string_generator(size=16):
return ''.join(random.SystemRandom().choice(string.ascii_letters + string.digits) for _ in range(size))
system.tag.write('folder/tag',string_generator())
This works fine when testing in the Script Console. However, when I try to run it as a Gateway Event Script it does not.
The wrapper log shows the error:
INFO | jvm 1 | 2018/03/09 16:02:49 | E [c.i.i.c.s.TimerScriptTask ] [21:02:49]: Error executing global timer script: HSES/randomString @10,000ms . Repeat errors of this type will be logged as 'debug' messages.
INFO | jvm 1 | 2018/03/09 16:02:49 | com.inductiveautomation.ignition.common.script.JythonExecException: Traceback (most recent call last):
INFO | jvm 1 | 2018/03/09 16:02:49 | File "<TimerScript:HSES/randomString @10,000ms >", line 8, in <module>
INFO | jvm 1 | 2018/03/09 16:02:49 | File "<TimerScript:HSES/randomString @10,000ms >", line 5, in string_generator
INFO | jvm 1 | 2018/03/09 16:02:49 | File "<TimerScript:HSES/randomString @10,000ms >", line 5, in <genexpr>
INFO | jvm 1 | 2018/03/09 16:02:49 | NameError: global name 'random' is not defined
INFO | jvm 1 | 2018/03/09 16:02:49 |
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.Py.NameError(Py.java:260)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.PyFrame.getglobal(PyFrame.java:265)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.pycode._pyx864.f$2(<TimerScript:HSES/randomString @10,000ms >:5)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.pycode._pyx864.call_function(<TimerScript:HSES/randomString @10,000ms >)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.PyTableCode.call(PyTableCode.java:165)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.PyGenerator.__iternext__(PyGenerator.java:149)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.PyGenerator.__iternext__(PyGenerator.java:131)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.PySequence.fastSequence(PySequence.java:241)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.PyString.str_join(PyString.java:1876)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.PyString$str_join_exposer.__call__(Unknown Source)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.PyObject.__call__(PyObject.java:391)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.pycode._pyx864.string_generator$1(<TimerScript:HSES/randomString @10,000ms >:5)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.pycode._pyx864.call_function(<TimerScript:HSES/randomString @10,000ms >)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.PyTableCode.call(PyTableCode.java:165)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.PyBaseCode.call(PyBaseCode.java:301)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.PyBaseCode.call(PyBaseCode.java:114)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.PyFunction.__call__(PyFunction.java:307)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.pycode._pyx864.f$0(<TimerScript:HSES/randomString @10,000ms >:11)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.pycode._pyx864.call_function(<TimerScript:HSES/randomString @10,000ms >)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.PyTableCode.call(PyTableCode.java:165)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.PyCode.call(PyCode.java:18)
INFO | jvm 1 | 2018/03/09 16:02:49 | at org.python.core.Py.runCode(Py.java:1275)
INFO | jvm 1 | 2018/03/09 16:02:49 | at com.inductiveautomation.ignition.common.script.ScriptManager.runCode(ScriptManager.java:634)
INFO | jvm 1 | 2018/03/09 16:02:49 | at com.inductiveautomation.ignition.common.script.ScriptManager.runCode(ScriptManager.java:601)
INFO | jvm 1 | 2018/03/09 16:02:49 | at com.inductiveautomation.ignition.common.script.TimerScriptTask.run(TimerScriptTask.java:88)
INFO | jvm 1 | 2018/03/09 16:02:49 | at java.util.TimerThread.mainLoop(Unknown Source)
INFO | jvm 1 | 2018/03/09 16:02:49 | at java.util.TimerThread.run(Unknown Source)
INFO | jvm 1 | 2018/03/09 16:02:49 | Caused by: org.python.core.PyException: Traceback (most recent call last):
INFO | jvm 1 | 2018/03/09 16:02:49 | File "<TimerScript:HSES/randomString @10,000ms >", line 8, in <module>
INFO | jvm 1 | 2018/03/09 16:02:49 | File "<TimerScript:HSES/randomString @10,000ms >", line 5, in string_generator
INFO | jvm 1 | 2018/03/09 16:02:49 | File "<TimerScript:HSES/randomString @10,000ms >", line 5, in <genexpr>
INFO | jvm 1 | 2018/03/09 16:02:49 | NameError: global name 'random' is not defined
Any information explaining why import random would not be working would be appreciated.