def undo(self, filename="", events={}):
tree = etree.parse(filename)
parent = findElementWithoutNamespace(tree, 'premis')
# Remove last |events| from parent
for event_el in parent.findall('.//{*}event')[-len(events):]:
parent.remove(event_el)
tree.write(filename, pretty_print=True, xml_declaration=True, encoding='UTF-8')
def undo(self, filename=None, elementToAppendTo=None, spec={}, info={}, index=None):
tree = etree.parse(filename)
parent = findElementWithoutNamespace(tree, elementToAppendTo)
found = parent.findall('.//{*}%s' % spec['-name'])
if index is None or index >= len(parent):
parent.remove(found[-1])
else:
parent.remove(parent[index])
tree.write(filename, pretty_print=True, xml_declaration=True, encoding='UTF-8')