Python Battery AI - How to log only if battery is connected or disconnected

Question

I'm making a Artificial Inteligence battery monitor look's like on iOS13 and i need to log the battery percentage/hour/plugged only when the user connect or disconnect the charger plug.

i tried to do something like:

if str(plugged) == "True":
    log_file.write(current_info + "\r\n")
elif str(plugged) == "False"
      log_file.write(current_info + "\r\n")

but the script don't stop to loop on "True"

Here is the main function of my code

log_file = open("activity_log.txt", "w")

while True:
    battery = psutil.sensors_battery()
            # Check if charger is plugged in or not
    plugged = battery.power_plugged

            # Check for current battery percentage
    percent = str(battery.percent)

    # Check for the current system time
    sys_time = datetime.datetime.now()

    current_info = percent + " " + str(sys_time) + " " + str(plugged)

    if str(plugged) == "True":
        log_file.write(current_info + "\r\n")

log_file.close()

the project on github if you want to test or implement it: https://github.com/peterspbr/battery-ai

Answer 1

If I have understood you correctly you want to exit the loop when variable plugged is True? Something to take into account is that Python is a string typing language, that means, that it is not the same "True" and True.

log_file = open("activity_log.txt", "w")
plugged = False
while not plugged:
    battery = psutil.sensors_battery()
            # Check if charger is plugged in or not
    plugged = battery.power_plugged

            # Check for current battery percentage
    percent = str(battery.percent)

    # Check for the current system time
    sys_time = datetime.datetime.now()

    current_info = percent + " " + str(sys_time) + " " + str(plugged)

    if str(plugged) == "True":
        log_file.write(current_info + "\r\n")

log_file.close() 

PD: I am assuming variable batery.power_plug is a bool type.