When you say it's failed completely what do you mean?
I've been translating between c# and python and having a great deal of success at the function and class level. I even ported unit tests easily between xunit and pythons unittest library. I've got close to 100% test coverage so I'm fairly confident it's done well
Failed as in it produced not working code that would take longer to fix than if I re-wrote it myself. Or, in the case of user interfaces, the generated UI code simply was useless and did not even resemble the original UI.
I've been translating between c# and python and having a great deal of success at the function and class level. I even ported unit tests easily between xunit and pythons unittest library. I've got close to 100% test coverage so I'm fairly confident it's done well