Inside the tensorflow/models/tutorials/rnn/translate folder, we have a few files including __init__.py and BUILD.
Without __init__.py and BUILD files, the translate script can still manage to run.
What is the purpose of __init__.py and BUILD here? Are we supposed to install or build it using these two files?
The BUILD file supports using Bazel for hermetic building and testing of the model code. In particular a BUILD file is present in that directory to define the integration test translate_test.py and its dependencies, so that we can run it on continuous integration system (e.g. Jenkins).
The __init__.py file causes Python to treat that directory as a package. See this question for a discussion of why __init__.py is often present in a Python source directory. While this file is not strictly necessary to invoke translate.py directly from that directory, it is necessary if we want to import the code from translate.py into a different module.
(Note that when you run a Python binary through Bazel, the build system will automatically generate __init__.py files if they are missing. However, TensorFlow's repositories often have explicit __init__.py files in Python source directories so that you can run the code without invoking Bazel.)
