What Does the python -v Command Do
This will show you the way your modules are loading for debugging reasons. (in this case it is just the base modules)
Documentation: https://docs.python.org/2/using/cmdline.html#cmdoption-v
You didn't do anything wrong. From the man page for Python (accessed by man python):
-v Print a message each time a module is initialized, showing the place (filename or built-in module) from which it is loaded. When given twice, print a message for each file that is checked for when searching for a module. Also provides information on module cleanup at exit. -V , --version Prints the Python version number of the executable and exits. When given twice, print more information about the build.Think of the lowercase -v as "verbose"—it's useful for debugging modules. The modules you listed are all from the standard library.