Reading and writing Windows “tags” with Python 3

问题

In Windows image files can be tagged. These tags can be viewed and edited by right clicking on a file, clicking over to the Details tab, then clicking on the Tags property value cell.

I want to be able to read and write these tags using Python 3.

This is not EXIF data so EXIF solutions won't work. I believe it's part of the Windows Property System, but I can't find a reference in Dev Center. I looked into win32com.propsys and couldn't see anything in there either.

I wrote a program that does this once before, but I've since lost it, so I know it's possible. Previously I did it without pywin32, but any solution would be great. I think I used windll, but I can't remember.

回答1:

Here is some sample code that's using the IPropertyStore interface through propsys:

import pythoncom
from win32com.propsys import propsys
from win32com.shell import shellcon

# get PROPERTYKEY for "System.Keywords"
pk = propsys.PSGetPropertyKeyFromName("System.Keywords")

# get property store for a given shell item (here a file)
ps = propsys.SHGetPropertyStoreFromParsingName("c:\\path\\myfile.jpg", None, shellcon.GPS_READWRITE, propsys.IID_IPropertyStore)

# read & print existing (or not) property value, System.Keywords type is an array of string
keywords = ps.GetValue(pk).GetValue()
print(keywords)

# build an array of string type PROPVARIANT
newValue = propsys.PROPVARIANTType(["hello", "world"], pythoncom.VT_VECTOR | pythoncom.VT_BSTR)

# write property
ps.SetValue(pk, newValue)
ps.Commit()

This code is pretty generic for any Windows property.

I'm using System.Keywords because that's what corresponds to jpeg's "tags" property that you see in the property sheet.

And the code works for jpeg and other formats for reading (GetValue) properties, but not all Windows codecs support property writing (SetValue), to it doesn't work for writing extended properties back to a .png for example.

来源：https://stackoverflow.com/questions/61713787/reading-and-writing-windows-tags-with-python-3