objectify | Android Object Preference Loader

Based on your most recent edit, I think you'll find the problem is that your for loop isn't matching any nodes. Your document doesn't contain any elements named component or structuredBody. The xmlns="urn:hl7-org:v3" declaration on the root element mean that all elements in the document exist by default in that particular namespace, so you need to use that namespace when matching elements:

Closing this based on suggestion by @RafaelLemos.

"Maybe this was a problem with an older version of some component"

Not reproducible. Probable fix

In general, such exception happens when you have two versions of the same class in the classpath. Some of the reasons that may happens are:

1. Your dependencies include two version of google-api-client. I don't see any direct dependency so It could be a transitive dependency. You can run mvn dependency:tree and look for google-api-client dependencies and exclude one of the jars
2. You are packing a provided dependency. It could be that app engine already include such jar with HttpTransport, if you also include this HttpTransport class into your artefact it will create problems. To fix this identify which dependency contains HttpTransport class and in your pom.xml add provided to it
3. This class is included in the classpath from some old jar in some generated repository. If this is the case all you have to do is reset your environment. Clone the repository again and re-init app engine

One reason for this error could be that you are directly sending protobufs and serialized some bytes that are simply not a valid entity.

As described in your exception, com.lowagie:itext failed to resolve:

I don't think there is much reason to convert it to integer, you can compare the string value just as well.

You could try the following:

• create a dictionary
• loop over each
  • use the string in as k and the string of as v
  • if the key is not in the dict, add the key k and a list [v] as value to the dict
  • if the key is in the dict, append v to the list
• loop over each key-value-pair in the dict
  • if the list in the value contains only one element, skip it
  • if the list contains more elements, that's one of the cases you're looking for.

I'm sure, there are better, more efficient and more pythonic ways to do it. But this should work, at least.

In any case, for this solution, you can use the string "5" just as well as the integer 5 as a key.
However, if you insist on converting the strings to integers, and keep getting errors, you may want to look into what the strings are, that cause these errors.

Since etree Elements carry attributes as a dict, you should be able to just pass in the dict when constructing the Element...

You were appending lxml objects to your list