Python datetime to Matlab datenum

Question

How do you convert a Python datetime to a Matlab datetnum?

Answer 1

To serialize datetime as a string, strftime can be used on the Python side:

import datetime
d = datetime.datetime.now()
print (d.strftime("%d-%b-%Y %H:%M:%S"))

According to MatLab docs datenum knows how to parse it.

Answer 2

Based on bavaza's answer - now including microseconds:

def datetime2matlabdn(dt):
   mdn = dt + timedelta(days = 366)
   frac_seconds = (dt-datetime.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