Python 电池 AI - 如何仅在电池连接或断开时记录

Question

我正在使人工智能电池监视器看起来像 iOS13 并且我需要仅在用户连接或断开充电器插头时记录电池 percentage/hour/plugged。

我尝试做类似的事情：

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

但脚本不会停止循环 "True"

这是我的代码的主要功能

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()

github 上的项目，如果您想测试或实施它：https://github.com/peterspbr/battery-ai

Answer 1

如果我没理解错你想在变量 plugged 为 True 时退出循环？需要考虑的是 Python 是一种字符串类型语言，这意味着它与 "True" 和 True.

不同

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：我假设变量 batery.power_plug 是 bool 类型。

Answer 2

我可能已经明白你想做什么了：你想在电池插头改变状态时记录信息。您遇到问题是因为您没有采取任何措施来跟踪电池是否已插入。试试这个：

was_plugged = battery.power_plugged
while True:
    ...
    if battery.power_plugged != was_plugged:
        log_file.write(current_info + "\r\n")
        was_plugged = battery.power_plugged

请学习更多关于 Python 基本类型的教程。很难遵循检查值的间接方法：将布尔值转换为文本，然后检查结果字符串：

if str(plugged) == "True":

您只需要直接布尔测试：

if plugged:

Python 电池 AI - 如何仅在电池连接或断开时记录

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

python

battery