iso8601 - Convert a datetime.timedelta into ISO 8601 duration in Python? -

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given datetime.timedelta, how convert string of iso 8601 duration format?

ex,

>>> iso8601(datetime.timedelta(0, 18, 179651)) 'pt18.179651s'

this function tin can python project (apache license 2.0) can conversion:

def iso8601(value):     # split seconds larger units     seconds = value.total_seconds()     minutes, seconds = divmod(seconds, 60)     hours, minutes = divmod(minutes, 60)     days, hours = divmod(hours, 24)     days, hours, minutes = map(int, (days, hours, minutes))     seconds = round(seconds, 6)      ## build date     date = ''     if days:         date = '%sd' % days      ## build time     time = u't'     # hours     bigger_exists = date or hours     if bigger_exists:         time += '{:02}h'.format(hours)     # minutes     bigger_exists = bigger_exists or minutes     if bigger_exists:       time += '{:02}m'.format(minutes)     # seconds     if seconds.is_integer():         seconds = '{:02}'.format(int(seconds))     else:         # 9 chars long w/leading 0, 6 digits after decimal         seconds = '%09.6f' % seconds     # remove trailing zeros     seconds = seconds.rstrip('0')     time += '{}s'.format(seconds)     return u'p' + date + time

e.g.

>>> iso8601(datetime.timedelta(0, 18, 179651)) 'pt18.179651s'

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