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from datetime import datetime as dt
from random import randint
from django.utils import timezone
class Unit(object):
def __init__(self, name, nsecs):
self.name = name
self.plural = name + "s"
self.nsecs = nsecs
SECOND = Unit("second", 1)
MINUTE = Unit("minute", 60)
HOUR = Unit("hour", MINUTE.nsecs * 60)
DAY = Unit("day", HOUR.nsecs * 24)
WEEK = Unit("week", DAY.nsecs * 7)
def format_duration(td):
remaining_seconds = int(td.total_seconds())
result = []
for unit in (WEEK, DAY, HOUR, MINUTE):
if unit == WEEK and remaining_seconds % unit.nsecs != 0:
# Say "8 days" instead of "1 week 1 day"
continue
v, remaining_seconds = divmod(remaining_seconds, unit.nsecs)
if v == 1:
result.append("1 %s" % unit.name)
elif v > 1:
result.append("%d %s" % (v, unit.plural))
return " ".join(result)
def format_hms(td):
total_seconds = td.total_seconds()
if 0.01 <= total_seconds < 1:
return "%.2f sec" % total_seconds
total_seconds = int(total_seconds)
result = []
mins, secs = divmod(total_seconds, 60)
h, mins = divmod(mins, 60)
if h:
result.append("%d h" % h)
if h or mins:
result.append("%d min" % mins)
result.append("%s sec" % secs)
return " ".join(result)
def format_approx_duration(td):
v = td.total_seconds()
for unit in (DAY, HOUR, MINUTE, SECOND):
if v >= unit.nsecs:
vv = v // unit.nsecs
if vv == 1:
return "1 %s" % unit.name
else:
return "%d %s" % (vv, unit.plural)
return ""
def month_boundaries(months=2):
result = []
now = timezone.now()
y, m = now.year, now.month
for x in range(0, months):
result.insert(0, dt(y, m, 1, tzinfo=timezone.utc))
m -= 1
if m == 0:
m = 12
y = y - 1
return result