Features

• Half-open or closed bounds.

• Non-uniform step date units, such as leap years and months.

• Alternative calendars: 360, all-leap, no-leap, gregorian, julian

• Ordinals (total days) for all calendar dates.

• Fraction arithmetic.

• [lower, upper) bounds search.

• Python 2 & 3.

Datetime

from datetime import datetime, timedelta from dtrange import dtrange

start = datetime(2000, 1, 1) stop = datetime(2020, 2, 1) step = timedelta(1)

for it in dtrange(start, stop, step, endpoint=True):

print(it)

for units in [‘y’, ‘m’, ‘w’, ‘d’, ‘h’, ‘min’, ‘s’, ‘ms’, ‘us’]:

for it in dtrange(start, stop, step=1, units=units):

print(units,it)

for it in dtrange(start, stop, n=10):

print(it)

for it in dtrange(start, step, n=10):

print(it)

for units in [‘y’, ‘m’, ‘w’, ‘d’, ‘h’, ‘min’, ‘s’, ‘ms’, ‘us’]:

for it in dtrange(start, step=1, units=units, n=10):

print(units,it)

from dtrange import dtfraction

print(dtfraction(datetime(2000,1,1), datetime(2001,1,1), datetime(2002,1,1)))

Date

from datetime import date, timedelta from dtrange import drange

start = date(2000, 1, 1) stop = date(2005, 2, 1) step = timedelta(days=1)

for calendar in [‘360’, ‘gregorian’, ‘julian’, ‘leap’, ‘noleap’]:

for it in drange(start, stop, step, calendar=calendar):

print(calendar,it)

from dtrange import dfraction

print(dfraction(date(2000,1,1), date(2001,1,1), date(2002,1,1)))

Time

from datetime import time, timedelta from dtrange import trange

start = time(0, 0, 0) stop = time(0, 1, 0) step = timedelta(seconds=1)

for it in trange(start, stop, step):

print(it)

from dtrange import tfraction

print(tfraction(time(1,1,1), time(2,1,1), time(3,1,1)))