如何用Python获取Windows系统中文件的源内容创建日期？

你提到的“源内容创建日期”属于文件的扩展元数据，和pathlib提供的文件系统层面时间（创建/修改时间）无关。在Windows系统下，可以通过内置的ctypes模块调用系统API来获取这类元数据，无需额外安装第三方包。

实现代码 #

import ctypes
from ctypes import wintypes
import datetime

# 初始化COM库
ctypes.OleInitialize(None)

# 定义所需的Windows API结构和函数
class PROPERTYKEY(ctypes.Structure):
    _fields_ = [
        ("fmtid", wintypes.GUID),
        ("pid", wintypes.DWORD)
    ]

class PROPVARIANT(ctypes.Structure):
    _fields_ = [
        ("vt", wintypes.WORD),
        ("wReserved1", wintypes.WORD),
        ("wReserved2", wintypes.WORD),
        ("wReserved3", wintypes.WORD),
        ("data", ctypes.c_void_p)
    ]

# 绑定Shell32中的函数
shell32 = ctypes.WinDLL("shell32")
propsys = ctypes.WinDLL("propsys")

SHGetPropertyStoreFromParsingName = shell32.SHGetPropertyStoreFromParsingName
SHGetPropertyStoreFromParsingName.argtypes = [
    wintypes.LPCWSTR, wintypes.LPCVOID, wintypes.DWORD,
    wintypes.REFIID, ctypes.POINTER(ctypes.c_void_p)
]
SHGetPropertyStoreFromParsingName.restype = wintypes.HRESULT

IPropertyStore_GetValue = propsys.IPropertyStore_GetValue
IPropertyStore_GetValue.argtypes = [
    ctypes.c_void_p, ctypes.POINTER(PROPERTYKEY), ctypes.POINTER(PROPVARIANT)
]
IPropertyStore_GetValue.restype = wintypes.HRESULT

IPropertyStore_Release = propsys.IPropertyStore_Release
IPropertyStore_Release.argtypes = [ctypes.c_void_p]
IPropertyStore_Release.restype = None

PropVariantClear = propsys.PropVariantClear
PropVariantClear.argtypes = [ctypes.POINTER(PROPVARIANT)]
PropVariantClear.restype = wintypes.HRESULT

# 定义“源内容创建日期”对应的PROPERTYKEY
# 对应System.Media.DateCreated属性，PID为10
MEDIA_CREATION_DATE_PK = PROPERTYKEY(
    fmtid=wintypes.GUID("{64440490-4C8B-11D1-8B70-080036B11A03}"),
    pid=10
)

def get_media_creation_date(file_path):
    ps = ctypes.c_void_p()
    hr = SHGetPropertyStoreFromParsingName(
        str(file_path), None, 0,
        wintypes.GUID("{886D8EEB-8CF2-4446-8D02-CDBA1DBDCF99}"),  # IPropertyStore的IID
        ctypes.byref(ps)
    )
    if hr != 0:
        return None

    pv = PROPVARIANT()
    hr = IPropertyStore_GetValue(ps, ctypes.byref(MEDIA_CREATION_DATE_PK), ctypes.byref(pv))
    if hr != 0:
        IPropertyStore_Release(ps)
        return None

    # 解析DATE类型的PropVariant
    if pv.vt == 7:  # VT_DATE
        # DATE类型是双精度浮点数，代表自1899-12-30以来的天数
        date_val = ctypes.cast(pv.data, ctypes.POINTER(ctypes.c_double)).contents.value
        creation_date = datetime.datetime(1899, 12, 30) + datetime.timedelta(days=date_val)
        result = creation_date.replace(microsecond=0)
    else:
        result = None

    PropVariantClear(ctypes.byref(pv))
    IPropertyStore_Release(ps)
    return result

# 使用示例
if __name__ == "__main__":
    file_path = r"C:\example.mp4"  # 替换为你的文件路径
    creation_date = get_media_creation_date(file_path)
    if creation_date:
        print(f"源内容创建日期: {creation_date}")
    else:
        print("无法获取源内容创建日期（文件不支持该元数据或系统错误）")

# 释放COM库
ctypes.OleUninitialize()

说明 #

1. 这段代码仅适用于Windows系统，因为依赖Windows Shell API获取文件元数据
2. 并非所有文件都包含“源内容创建日期”元数据——只有媒体文件（视频、图片）、Office文档等带有内容创建信息的文件才会存储该字段
3. 代码中使用的PROPERTYKEY对应Windows系统定义的System.Media.DateCreated属性，是文件属性页中“源内容创建日期”的底层标识

内容的提问来源于stack exchange，提问作者Javid Shiriyev