forgot to cc the list... On Tue, Feb 16, 2010 at 8:18 PM, Damien Moore <[email protected]> wrote: >>although there is no bug report to track it, could you please file one? > > will do. > > Now I'm having some minor issues with Xmp. I doubt it matters, but I > was working on this image: > http://farm5.static.flickr.com/4050/4346878811_b0c030a8fa_o.jpg > > in python >>>>import pyexiv2 >>>>meta=pyexiv2.ImageMetadata("test.jpg") >>>>meta.read() >>>>meta.xmp_keys > [] >>>>key = 'Xmp.dc.title' >>>>value = {'x-default': 'Sunset', 'fr': 'Coucher de soleil'} >>>>meta[key]=pyexiv2.XmpTag(key,value) >>>>meta[key] >>>>meta[key]="Sunset" > <Xmp.dc.title [Lang Alt] = {'x-default': 'snow', 'fr': 'neige'}> > #Seems to work fine, but why can't I just use: meta[key]=value (i.e. > what can you do in XmpTag constructor that you can't do in > __setitem__?). Also, using a dict is kind of verbose if I just want to > set x-default, no? >>>>meta["Xmp.dc.subject"]=["abc","def","ghi"] > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > File "pyexiv2/metadata.py", line 275, in __setitem__ > return getattr(self, '_set_%s_tag' % family)(tag) > File "pyexiv2/metadata.py", line 229, in _set_xmp_tag > raise TypeError('Expecting an XmpTag') > TypeError: Expecting an XmpTag > #this is straight from your examples.py so I'm surprised this doesn't work >>>>key="Xmp.dc.subject" >>>>value={'x-default':['snow','home']} >>>>meta[key]=pyexiv2.XmpTag(key,value) >>>>print meta[key] > {'x-default': ['test2', 'test3']} > #works as expected > > Some additional questions: > * In the value, what is 'x-default'? (does this write to whatever the > users locale is or just represents the absence of a locale?) Are there > other possibilities here besides language codes? > * Can all Xmp tags be set with the meta[key]=XmpTag(key,value) idiom? > If so is value always a dict or can it be something else? The dict > always refers to the languages? What about non-text types like dates > or numbers, such as the Xmp.exif.DateTimeOriginal (or are they just > stored as text too?) > * Is it ever possible to use meta[key]=value? (I gather from the > example that it should work for Xmp.dc.subject) > * Is there a way to discover from within the lib what keys can be set? >
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