如何从Win32_PnPEntity实例中提取特定属性？

Question

def getPnpDeviceInfo():
    c = wmi.WMI()
    wql = "SELECT * FROM Win32_PnPEntity WHERE Manufacturer != 'Microsoft' AND NOT PNPDeviceID LIKE 'ROOT\\%'"
    print ("All physical PNP devices")
    for J in c.query(wql):
    print(J)

这个函数（查询）通常会返回所有的物理PNP设备，下面是一个输出示例：

instance of Win32_PnPEntity
{
Caption = "ACPI Lid";
ClassGuid = "{4d36e97d-e325-11ce-bfc1-08002be10318}";
ConfigManagerErrorCode = 0;
ConfigManagerUserConfig = FALSE;
CreationClassName = "Win32_PnPEntity";
Description = "ACPI Lid";
DeviceID = "ACPI\\PNP0C0D\\2&DABA3FF&3";
HardwareID = {"ACPI\\PNP0C0D", "*PNP0C0D"};
Manufacturer = "(Standard system devices)";
Name = "ACPI Lid";
PNPDeviceID = "ACPI\\PNP0C0D\\2&DABA3FF&3";
Status = "OK";
SystemCreationClassName = "Win32_ComputerSystem";
SystemName = "SUSDUTTA-LAP";
};

问题是，如果我只想提取实例的“PNPDeviceID”，在不改变WQL的情况下，怎么用python来做到这一点呢？

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Answer 1

没关系，我在WMI的Python文档里找到了答案。WQL会把结果以列表的形式返回，还有一个工厂方法叫做"__getattr__(self,'attribute_name'_)"，它可以通过特定的属性名称来获取数据。