<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def strtimezone ():
 """Return timezone info, %z on some platforms, but not supported on all. """

    if time.daylight:
        zone = time.altzone
    else:
        zone = time.timezone
    return "%+04d" % (-zone//SECONDS_PER_HOUR)