I've been all over google for a few days and this forum getting nowhere. I'm working on a raspberry pi 4 8GB, running current Raspbian. Installed node-red and have simple flows working. Have a simple python3 program running in Thonny. This flow is just trying to run this simple python program under node-red python3 function and returning 1 value(message). It looks like not able to load modules, so I've stripped this program down to "hello world", without much luck getting it to pass a msg back to debug window, where do I go next ? pi@raspberrypi:~ $ which python3 /usr/bin/python3 pi@raspberrypi:~ $ [{"id":"1027ca0d.5e05b6","type":"debug","z":"53601e04.d3716","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"payload","targetType":"msg","statusVal":"","statusType":"auto","x":700,"y":100,"wires":[]}] python code below import os import glob import time os.system('modprobe w1-gpio') os.system('modprobe w1-therm') base_dir = '/sys/bus/w1/devices/' device_folder = glob.glob(base_dir + '28*')[0] device_file = device_folder + '/w1_slave' def read_temp_raw(): f = open(device_file, 'r') lines = f.readlines() f.close() return lines def read_temp(): lines = read_temp_raw() while lines[0].strip()[-3:] != 'YES': time.sleep(0.2) lines = read_temp_raw() equals_pos = lines[1].find('t=') if equals_pos != -1: temp_string = lines[1][equals_pos+2:] temp_c = float(temp_string) / 1000.0 temp_f = temp_c * 9.0 / 5.0 + 32.0 return temp_c, temp_f msg.payload = temp_f return msg.payload

jabrockert 13 September 2020 13:18 61

of the sensor that I've removed

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Running python in node-red, passing back a msg

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