<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def normalized_path(value):
 """Normalize and expand a shorthand or relative path."""

    if not value:
        return
    norm = os.path.normpath(value)
    norm = os.path.abspath(os.path.expanduser(norm))
    return norm