matlab_datenum_python_datetime_conversion.py

from datetime import datetime, timedelta

def from_matlab_datetime(matlab_datenum):
 return datetime.fromordinal(int(matlab_datenum)) + timedelta(days=matlab_datenum%1) - timedelta(days = 366)
 
def datetime2matlabdn(dt):
   mdn = dt + timedelta(days = 366)
   frac_seconds = (dt-datetime(dt.year,dt.month,dt.day,0,0,0)).seconds / (24.0 * 60.0 * 60.0)
   frac_microseconds = dt.microsecond / (24.0 * 60.0 * 60.0 * 1000000.0)
   return mdn.toordinal() + frac_seconds + frac_microseconds