Python inline condition script

Setup, Configuration and Use Beginners
,
1

Hi,

I want to use a small Python script as rule condition. Unfortunately it’s not clear for me how I can control that it evaluates to true or not. Can I just return an exit code using the exit() function?

Thank you.

2

In the python readme.md in the last “Simple rule” example, you can see how conditions are used. One time it is just a state condition and the other time it is a script based condition. As you can see there is no return or exit code. Just the condition like Registry.getItem('Item2').getState() = scope.ON

3

Thank you, but with simple equality sign this statement would be an assignment, not an equality check. But as the full line is `ItemScriptCondition(“Registry.getItem(‘Item2’).getState() = scope.ON”)` it might work. But the example isn’t a simple inline script I was referring to.

4

thanks for the hint, I just copied from my readme :innocent: and there was a typo. It is fixed in this commit

maybe you mean something like this

from openhab import rule
from openhab.triggers import ItemScriptCondition, GenericCronTrigger

@rule(
    triggers = [
        GenericCronTrigger("*/5 * * * * ?"),
    ],
    conditions = [
        ItemScriptCondition("""
def check():
    return True

check()
        """)
    ]
)
class Test():
    def execute(self, module, input):
        print("Test")

or

from openhab import rule
from openhab.triggers import ItemScriptCondition, GenericCronTrigger

@rule(
    triggers = [
        GenericCronTrigger("*/5 * * * * ?"),
    ],
    conditions = [
        ItemScriptCondition("""
from custom import check

check()
        """)
    ]
)
class Test():
    def execute(self, module, input):
        print("Test")