import RPi.GPIO as GPIO
import paho.mqtt.client as mqtt
import time


def privacyfunc():

    # Pin Definitions:
    led_pin_1 = 7
    led_pin_2 = 21
    but_pin = 18

# blink LED 2 quickly 5 times when button pressed
def blink(channel):
    x=GPIO.input(18)
    print("blinked")
    for i in range(1):
        GPIO.output(led_pin_2, GPIO.HIGH)
        time.sleep(0.5)
        GPIO.output(led_pin_2, GPIO.LOW)
        time.sleep(0.5)
    mqttBroker="mqtt.fluux.io"#connect mqtt broker
    client=mqtt.Client("privacybtn") #create a client and give a name
    client.connect_async(mqttBroker)#from the client -connect broker

    while True:

        client.publish("privacy", x)#publish this random number to the topic called temparature
        print("Just published" str(x) "to Topc to privacy")#just print random no to topic temparature
        break

def main():
    # Pin Setup:
    GPIO.setmode(GPIO.BOARD)  # BOARD pin-numbering scheme
    GPIO.setup([led_pin_1, led_pin_2], GPIO.OUT)  # LED pins set as output
    GPIO.setup(but_pin, GPIO.IN)  # button pin set as input

    # Initial state for LEDs:
    GPIO.output(led_pin_1, GPIO.LOW)
    GPIO.output(led_pin_2, GPIO.LOW)

    GPIO.add_event_detect(but_pin, GPIO.FALLING, callback=blink, bouncetime=10)
    print("Starting demo now! Press CTRL C to exit")
    try:
        while True:
            x=GPIO.input(18)
            print(x)
            # blink LED 1 slowly   
            GPIO.output(led_pin_1, GPIO.HIGH)
            time.sleep(2)
    finally:
        GPIO.cleanup()  # cleanup all GPIOs

if __name__ == '__main__':
    main()

need to take this whole code into a function that can be accessed from another python file.plz, help me with this coding part.

CodePudding user response：

In the new python file call import module where module is the name of the file. Like led_blink.py would be import led_blink

Then you can call the methods like so:

led_blink.blink(channel)

This is assuming the files are in the same folder.

CodePudding user response：

Easiest way that I do this is to take a .py file and put it in the same directory you created the python script you are working with. From there you can do the following code from The_Python_File import *

Additionally note that the "The_Python_File" is the name of the .py file that contains the function you are trying to call, but you do not include .py when importing the file.