python获取硬盘活动时间

在Python中获取硬盘的活动时间不是一个直接的操作，因为标准库中没有直接提供这样的功能。但是，你可以通过执行系统命令或者访问操作系统提供的接口来获取硬盘的活动信息。

以Windows系统为例，你可以使用`ctypes`库来调用Windows API获取硬盘的读写活动时间。这里有一个简化的例子来展示如何使用Python来获取硬盘活动时间：

import ctypes
from ctypes import wintypes

# 获取磁盘IO计数信息
def get_disk_io_info():
    class IO_COUNTERS(ctypes.Structure):
        _fields_ = [
            ("ReadTransferCount", wintypes.ULONGLONG),
            ("WriteTransferCount", wintypes.ULONGLONG),
            ("OtherTransferCount", wintypes.ULONGLONG),
            ("ReadOperationCount", wintypes.ULONGLONG),
            ("WriteOperationCount", wintypes.ULONGLONG),
            ("OtherOperationCount", wintypes.ULONGLONG)
        ]

    class FILEIO_COUNTERS(ctypes.Structure):
        _fields_ = [
            ("ReadTransferCount", wintypes.ULONGLONG),
            ("WriteTransferCount", wintypes.ULONGLONG),
            ("OtherTransferCount", wintypes.ULONGLONG),
            ("ReadOperationCount", wintypes.ULONGLONG),
            ("WriteOperationCount", wintypes.ULONGLONG),
            ("OtherOperationCount", wintypes.ULONGLONG)
        ]

    kernel32 = ctypes.WinDLL('kernel32')
    deviceiocontrol = kernel32.DeviceIoControl
    deviceiocontrol.argtypes = [wintypes.HANDLE, wintypes.DWORD, ctypes.c_void_p, wintypes.DWORD, ctypes.c_void_p, wintypes.DWORD, ctypes.POINTER(wintypes.DWORD), ctypes.c_void_p]
    deviceiocontrol.restype = wintypes.BOOL

    file_handle = kernel32.CreateFileW('\\\\.\\PhysicalDrive0', 0x80000000 | 0x40000000, 0, None, 0x3, 0x80, None)
    if file_handle == wintypes.INVALID_HANDLE_VALUE:
        raise ctypes.WinError()

    input_buffer = wintypes.DWORD()
    output_buffer = FILEIO_COUNTERS()
    bytes_returned = wintypes.DWORD()

    result = deviceiocontrol(file_handle, 0x74060, ctypes.byref(input_buffer), wintypes.sizeof(input_buffer), ctypes.byref(output_buffer), wintypes.sizeof(output_buffer), ctypes.byref(bytes_returned), None)

    if result == 0:
        raise ctypes.WinError()

    return output_buffer.ReadOperationCount, output_buffer.WriteOperationCount

# 使用示例
read_count, write_count = get_disk_io_info()
print(f"读取操作次数: {read_count}, 写入操作次数: {write_count}")

请注意，上述代码只是获取了硬盘的读写操作次数，而不是硬盘的活动时间。要获取活动时间，你可能需要结合其他系统信息来计算时间差。这通常需要深入了解操作系统的性能监控机制。

在Linux系统中，你可以读取`/proc/diskstats`文件来获取硬盘的统计信息，包括读写次数和扇区数等。