Hello using python-function i'm not able to get get the variable value import sys sys.path.append("/home/pi/.local/lib/python3.9/site-packages") from pigpio_encoder.rotary import Rotary import threading import time global my_counter my_counter = 0 def sw_short(): pass def up_callback(counter…

when you run python are you using the -u parameter to ensure it flushes any results to the output ?

no i never put the -u, where i have to put it ? [image] this is what i see when i run the flow but i have no output

Ah sorry didn’t spot you were using a custom node. I usually just call python -u from an exec node

I remember that others have had problems using that node, as Dave suggests, you might be better using an exec node to call your script. If you do that make sure you put the full path to the script in the exec node.

Hello Now i'm in this situation but no output: [image] inject [image] exec [image] Debug [image] Python code import RPi.GPIO as GPIO from time import sleep counter = 10 Enc_A = 13 Enc_B = 12 def init(): print("Rotary Encoder Test Program") GPIO.setwarnings(True) GP…

Check all outputs of the exec node, set the debug nodes to show the full message. Add some debug output to your script to see what is happening and what is not happening.

hello i start from easy test just for understand the problem if i do so: [image] [image] as you can see in the debug i have the return value but how can do if the return value is inside a def for example: def test() msg = 'test' return test while True: test() it run but i don't h…

i have solved this issue doing this: global pippo def test(): global pippo pippo = 'test' return pippo while True: test() msg['payload'] = {'pippo':pippo} return msg but i don't understand why in node-red i have the msg one time and not repeated. But my big problem is this…

I am not at home in python, but aren't variables global by default if they are defined outside a function ? ie. can you remove all the "global" definitions ?

sorry guys but i really don't understand: from pigpio_encoder.rotary import Rotary global my_counter my_counter = 0 def sw_short(): pass def up_callback(counter): global my_counter if counter%40==0: my_counter+=1 print(my_counter) msg['payload'] = {'my_counter'…

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Python function return variable

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cymplecy 26 January 2023 16:06 20

Just linking in case you find this easier

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Python function return variable

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