<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_version():
 """ Return formatted version string. Returns: str: string with project version or empty string. """


    if all([VERSION, UPDATED, any([isinstance(UPDATED, date), isinstance(UPDATED, datetime), ]), ]):

        return FORMAT_STRING.format(**{"version": VERSION, "updated": UPDATED, })
    elif VERSION:

        return VERSION
    elif UPDATED:

        return localize(UPDATED) if any([isinstance(UPDATED, date), isinstance(UPDATED, datetime), ]) else ""
    else:

        return ""