8.1. datetime — Basic date and time types — Python v2.7.3 documentation

Note that normalization of negative values may be surprising at first. For
example,

>>>

          
            >>> 
          
          
            from
          
          
            datetime
          
          
            import
          
          
            timedelta
          
          
            >>> 
          
          
            d
          
          
            =
          
          
            timedelta
          
          
            (
          
          
            microseconds
          
          
            =-
          
          
            1
          
          
            )
          
          
            >>> 
          
          
            (
          
          
            d
          
          
            .
          
          
            days
          
          
            ,
          
          
            d
          
          
            .
          
          
            seconds
          
          
            ,
          
          
            d
          
          
            .
          
          
            microseconds
          
          
            )
          
          
            (-1, 86399, 999999)
          
        

8.1. datetime — Basic date and time types — Python v2.7.3 documentation