使用 plistlib 访问 system_profiler plist 项目

Question

我正在尝试访问生成的 plist 中第一个 _items 数组的 serial_number 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在第 9 行访问 plist 的键的方式，但我无法弄清楚。

任何帮助将不胜感激！

Answer 1

锻炼很有趣！我认为您希望它从 system_profiler plist

获取序列号

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'])

---

你也可以不使用plistlib，像这样：

import subprocess

cmd = ['system_profiler', 'SPHardwareDataType']
profile = subprocess.check_output(cmd).decode('utf-8')
for line in profile.splitlines():
   if 'Serial Number' in line:
       serial = line.split()[-1]

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