<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _compare(info1, info2):
 # type: (Info, Info) -> bool """Compare two `Info` objects to see if they should be copied. Returns: bool: `True` if the `Info` are different in size or mtime. """

    # Check filesize has changed
    if info1.size != info2.size:
        return True
    # Check modified dates
    date1 = info1.modified
    date2 = info2.modified
    return date1 is None or date2 is None or date1 > date2