使用 plistlib 访问 system_profiler plist 项

如何解决使用 plistlib 访问 system_profiler plist 项

我正在尝试访问生成的 plist 中第一个 serial_number 数组的 _items 键：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<array>
    <dict>
        <key>_SPCommandLineArguments</key>
        <array>
            <string>/usr/sbin/system_profiler</string>
            <string>-nospawn</string>
            <string>-xml</string>
            <string>SPHardwareDataType</string>
            <string>-detailLevel</string>
            <string>full</string>
        </array>
        <key>_SPCompletionInterval</key>
        <real>0.15617406368255615</real>
        <key>_SPResponseTime</key>
        <real>0.18982398509979248</real>
        <key>_dataType</key>
        <string>SPHardwareDataType</string>
        <key>_detailLevel</key>
        <string>-2</string>
        <key>_items</key>
        <array>
            <dict>
                <key>serial_number</key>
                <string>C0**</string>
            </dict>
        </array>
    </dict>
</array>
</plist>

这是Python代码：

    def get_serial_number():
        import plistlib
        cmd = ['system_profiler','SPHardwareDataType','-xml']
        plist = subprocess.check_output(cmd)
        with open('hardware.plist','wb') as fp:
            plistlib.dump(plist,fp)
        with open('hardware.plist','rb') as fp:
            pl = plistlib.load(fp,fmt=None,dict_type=dict)
            serial = pl[0]['_items'][0]['serial_number']
        return serial

我收到的错误是：'int' object is not subscriptable。我假设这是因为我试图访问第 9 行 plist 的键的方式，但我无法弄清楚。

任何帮助将不胜感激！

解决方法

锻炼起来很有趣！我认为您希望它从 system_profiler if (this.state.followingPosts.length == 0) { return( <View style={styles.emptyContainer}> <Text style = {styles.buttonText}>follow people or post!</Text> <TouchableOpacity style = {styles.button} onPress={() => this.onShare()} > <Text style = {styles.buttonText}>invite friends to follow</Text> </TouchableOpacity> <TouchableOpacity style = {styles.button} onPress={() => this.props.navigation.navigate('Create')} > <Text style = {styles.buttonText}>post something!</Text> </TouchableOpacity> </View> ) }

获取序列号

plist

---

你也可以不用 import plistlib import subprocess cmd = ['system_profiler','SPHardwareDataType','-xml'] plist = subprocess.check_output(cmd) pl = plistlib.loads(plist,fmt=None,dict_type=dict) print(pl[0]['_items'][0]['serial_number']) 像这样：

plistlib

关键字：Python、macOS、plist、plistlib、PlistBuddy、序列号。