2 # http://www.cl.cam.ac.uk/~mgk25/iso-time.html
4 import calendar, datetime, re, time
7 return time.strftime("%Y-%m-%d %H:%M:%S", t)
9 def iso_utc_date(now=None, t=time.time):
12 return datetime.datetime.utcfromtimestamp(now).isoformat()[:10]
14 def iso_utc(now=None, sep='_', t=time.time):
17 return datetime.datetime.utcfromtimestamp(now).isoformat(sep)
19 def iso_utc_time_to_seconds(isotime, _conversion_re=re.compile(r"(?P<year>\d{4})-(?P<month>\d{2})-(?P<day>\d{2})[T_ ](?P<hour>\d{2}):(?P<minute>\d{2}):(?P<second>\d{2})(?P<subsecond>\.\d+)?")):
21 The inverse of iso_utc().
23 Real ISO-8601 is "2003-01-08T06:30:59". We also accept the widely
24 used variants "2003-01-08_06:30:59" and "2003-01-08 06:30:59".
26 m = _conversion_re.match(isotime)
28 raise ValueError, (isotime, "not a complete ISO8601 timestamp")
29 year, month, day = int(m.group('year')), int(m.group('month')), int(m.group('day'))
30 hour, minute, second = int(m.group('hour')), int(m.group('minute')), int(m.group('second'))
31 subsecstr = m.group('subsecond')
33 subsecfloat = float(subsecstr)
37 return calendar.timegm( (year, month, day, hour, minute, second, 0, 1, 0) ) + subsecfloat
39 def parse_duration(s):
50 elif s.endswith("month"):
53 elif s.endswith("mo"):
56 elif s.endswith("year"):
60 raise ValueError("no unit (like day, month, or year) in '%s'" % orig)
65 # return seconds-since-epoch for the UTC midnight that starts the given
67 return int(iso_utc_time_to_seconds(s + "T00:00:00"))
69 def format_delta(time_1, time_2):
74 delta = int(time_2 - time_1)
77 minutes = (delta / 60) % 60
79 hours = delta / (60*60) % 24
81 days = delta / (24*60*60)
85 return "%ss" % (seconds)
87 return "%sm %ss" % (minutes, seconds)
89 return "%sh %sm %ss" % (hours, minutes, seconds)
91 return "%sd %sh %sm %ss" % (days, hours, minutes, seconds)