How would I go about adding custom XML to a PowerPoint file to add image effects? If I change a14 to a it will add but not do anything if I have as a14 (like the xml is on a manually generated file). I get the error
File "C:\Program Files\Python39\lib\site-packages\pptx\oxml\xmlchemy.py", line 28, in OxmlElement nsptag = NamespacePrefixedTag(nsptag_str) File "C:\Program Files\Python39\lib\site-packages\pptx\oxml\ns.py", line 62, in init self._ns_uri = _nsmap[self._pfx] KeyError: 'a14'
Does anyone have any pointers as to where I'm going wrong please? I'm new to both Python & Python-PPTX and normally can work things out but this one has got my brain fried!
def AddEffects(shape):
pic = shape._pic
rId = pic.xpath('./p:blipFill/a:blip')[0]
jj = OxmlElement("a:biLevel")
jj.set("thresh","50000")
rId.append(jj)
el = OxmlElement("a:extLst")
jj.append(el)
saturation = OxmlElement("a:ext")
saturation.set("uri", "{BEBA8EAE-BF5A-486C-A8C5-ECC9F3942E4B}")
el.append(saturation)
saturation2 = OxmlElement("a14:imgProps")
saturation2.set("xmlns", "http://schemas.microsoft.com/office/drawing/2010/main")
saturation.append(saturation2)
saturation3 = OxmlElement("a14:imgLayer")
saturation3.set("embed", "rId3")
saturation2.append(saturation3)
saturation4 = OxmlElement("a14:imgEffect")
saturation3.append(saturation4)
saturation5 = OxmlElement("a14:saturation")
saturation5.set("sat", "0")
saturation4.append(saturation5)