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Basic calendar functions for the classical Mayan calendar

Project description

mayacal

WORK IN PROGRESS - Implementation of some calendrical features for Classical Maya calendar

Requires Python 3.5+

Installation

pip install mayacal

Example Usage:

Import:

>>> import mayacal as mc

Basic conversions and additions:

>>> lc = mc.LongCount(9, 0, 0, 0, 0)
>>> lc.get_calendar_round()
8 Ajaw 13 Keh

>>> dist = mc.DistanceNumber(mc.LongCount(0, 0, 13, 2, 10), sign=1)
>>> new_lc = lc + dist
>>> new_lc
9.0.13.2.10

>>> new_lc.get_mayadate()
9.0.13.2.10  6 Ok 18 Sak

>>> print(new_lc.to_julian())
Nov 19, 448 CE

>>> print(new_lc.to_gregorian())
Nov 20, 448 CE

Get all Long Count dates corresponding to a given Calendar Round:

>>> cr = mc.CalendarRound(mc.Tzolkin(6, "Ok"), mc.Haab(18, "Sak"))
>>> min_lc = mc.LongCount(9,0,0,0,0)
>>> max_lc = mc.LongCount(10,0,0,0,0)
>>> cr.get_long_count_possibilities(min_lc, max_lc)
[9.0.13.2.10, 9.3.5.15.10, 9.5.18.10.10, 9.8.11.5.10, 9.11.4.0.10, 9.13.16.13.10, 9.16.9.8.10, 9.19.2.3.10]

Find the distance between two Long Count dates:

>>> lc_1 = mc.LongCount(9, 12, 13, 0, 5)
>>> lc_2 = mc.LongCount(8, 0, 0, 0, 0)
>>> diff = (lc_1 - lc_2)
>>> diff
1.12.13.0.5

>>> diff.get_total_kin()
235085

>>> diff.to_approx_years(pretty_print=True)
'643 years, 7 months, 16 days'

Infer missing date components:

>>> cr = mc.CalendarRound(mc.Tzolkin(4, "Ajaw"), mc.Haab(8, "Kumku"))
>>> lc = mc.LongCount(9, 4, None, 10, None)
>>> date = mc.Mayadate(lc, cr)
>>> date.infer_mayadates()
[9.4.10.10.0  4 Ajaw 8 Kumku]
>>> cr = mc.CalendarRound(mc.Tzolkin(4, "Ajaw"), mc.Haab(8, "Kumku"))
>>> lc = mc.LongCount(9,None,None,None,None)
>>> date = mc.Mayadate(lc, cr, glyph_g='G3')
>>> date.infer_mayadates()
[9.1.17.15.0  4 Ajaw 8 Kumku]
>>> cr = mc.CalendarRound(mc.Tzolkin(4, "Ajaw"), haab=None)
>>> lc = mc.LongCount(10,None,8,10,None)
>>> date = mc.Mayadate(lc, cr)
>>> date.infer_long_count_dates()
[10.1.8.10.0, 10.14.8.10.0]

Development

Dependencies

There are currently no external dependencies outside of the standard python library. Note the the package requires Python 3.5 or later.

Testing (WIP)

Testing is implemented via pytest.

After installing pytest, you can run all the tests in the package using the following command:

python -m py.test

To run tests in a specific file, use:

python -m py.test tests/...PATH_TO_TEST_FILE... 

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