“clang”[ˈklæŋ] is the compiler based on LLVM for C, C++, Objective-C, and Objective-C++. clang is needed to install in order to Swift. Run the following code in Ubuntu terminal.
Before installing swift “libpython2.7” and “libpython2.7-dev” are needed to get Swift running. Run the following code.
In Google Developer Console inside your app project, on the Credentials section, you must create a new "Service Account" "Client ID", if you have not already. And download the p12 file. You need the service account key file, generated in the Google APIs Console into the same directory and rename it to key.p12.
On Google Play Developer Console you have to give permissions to "YOUR_SERVICE_ACCOUNT_EMAIL@developer.gserviceaccount.com" for uploading apks.
Download Google APIs Client Library for Python (google-api-python-client): https://code.google.com/p/google-api-python-client/ or use pip:
$ pip install google-api-python-client