How to get the value of a string?

General Discussion
1

Hey everybody,

I am trying to get the value of a string that I pass into a client event script.

		path = '[default]LastCurrentModule'
		currentModule = system.tag.readBlocking([path])
		print currentModule.value

However, when I use this code it returns an error:
“AttributeError: ‘java.util.ArrayList’ object has no attribute ‘value’”

Though when I print just currentModule I get this:
[[Module 1000, Good, Tue Mar 08 09:31:39 CST 2022 (1646753499795)]]

How do I pull out Module 1000?

Thanks in advance!

2

readBlocking takes a list of paths to read and returns a list of values. Therefore, to read the value of the tag you read…

path = '[default]LastCurrentModule'
currentModule = system.tag.readBlocking([path])
print currentModule[0].value
1 Like
3

system.tag.readBlocking returns a list of QualifiedValues, so you first need to get an element of the list before accessing the value. There’s an example of how to do this in the docs.

1 Like
4

I tried currentModule[0] and currentModule.value but not currentModule[0].value.

Thank you for both of your responses.

1 Like
5

[[Module 1000, Good, Tue Mar 08 09:31:39 CST 2022 (1646753499795)]]
If you look closely, you’ll see that the returned data is a list of lists, so [0] gets the first member of the returned list, then .value gets the value from the fully-qualified tag data list.