secondprecision= — Sets the number of fractional-second digits
basetimestampObj.secondprecision=(precision)#secondprecision= sets the number of fractional-second digits to precision, which must be in the range 1–9.
If the default_fmt instance variable includes a fractional-second specifier (“FFn”, where n is in the range 1–9), the value of n will be changed to precision.