This method translates self.modEpoch to our standard date and time
format.
First we convert the epoch time to a local time tuple,
then we format it using the time formatting method of the
time module.
# - - - m o d T i m e - - -
def modTime ( self ):
"""Format the modification time as yyyy-mm-dd hh:mm:ss."""
return time.strftime ( TIME_FORMAT,
time.localtime ( self.modEpoch ) )