Python Battery AI-仅在连接或断开电池的情况下才记录日志

Question

[我正在使人造智能电池监视器看起来像iOS13一样，仅当用户连接或断开充电器插头时，我才需要记录电池百分比/小时/已插入。

我试图做类似的事情：

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

但是脚本不会停止循环播放“ 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，如果您想测试或实现它：https://github.com/peterspbr/battery-ai

Answer 1

如果我正确理解了您想在变量plugged为True时退出循环吗？需要考虑的一点是Python是一种字符串输入语言，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是布尔类型。

Answer 2

我可能已经弄清楚了您要做什么：您想在电池插头状态改变时记录信息。您遇到了麻烦，因为您没有做任何事情来跟踪电池是否已插入。请尝试以下操作：

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

---

请阅读有关基本Python类型的更多教程。很难遵循间接检查值的方式：您将布尔值转换为文本，然后针对结果字符串进行了检查：

if str(plugged) == "True":

您需要的是直接布尔测试：

if plugged: