Ancient Athenian acrophonic numeral converter
Project description
Akrophonobolos
Python package for handling Ancient Athenian monetary values in talents, drachmas and obols, including input and output in Greek acrophonic numerals (such as ๐ , ๐ , ๐ , ๐ , ๐ , etc.)
Installation
pip install akrophonobolos
Usage
Read the full documentation on Read the Docs
Akrophonobolos provides functions for parsing, manipulating, and
formatting Greek acrophonic numerals. It also provides a class,
Khremata
encapsulating these methods. Interally, the python
fractions
library is used to minimize issues caused by floating
point arithmetic.
>>> import akrophonobolos as obol
>>> cash = obol.parse_greek_amount("ฮค๐
ฮฮฮฮ๐
๐
๐
ฮ๐
")
>>> cash
Fraction(81759, 2)
>>> obol.format_amount(cash)
'1t 813d 1ยฝb'
>>> obol.format_amount(cash, obol.Fmt.ENGLISH)
'1 talent, 813 drachmas, 1ยฝ obols'
>>> obol.format_amount(cash, obol.Fmt.GREEK)
'ฮค๐
ฮฮฮฮ๐
๐
๐
ฮ๐
'
>>> obol.format_amount(cash * 2)
'2t 1626d 3b'
Using the class:
>>> cash1 = obol.Khremata('1t')
>>> cash2 = obol.Khremata('300d 3b')
>>> cash1 + cash2
Khremata (1t 300d 3b [= 37803.0 obols])
>>> cash1 - cash2
Khremata (5699d 3b [= 34197.0 obols])
>>> cash1/cash2
Fraction(12000, 601)
There are functions for working with the sort of interest we see in inscriptions such as IG Iยณ 369.
>>> rate = obol.interest_rate("5t", 1, "1d")
>>> rate
Fraction(1, 30000)
>>> obol.loan_term("๐
", "ฮคฮคฮง๐
ฮฮฮฮ๐
ฮฮ", rate)
1397
The first line calculates the rate required for 1 drachma interest on 1 talent in 1 day. The last applies it to the amounts found on line 7 of that inscription for the principal (๐ , 50 talents) and interest (ฮคฮคฮง๐ ฮฮฮฮ๐ ฮฮ, 2 talents 1,970 drachmas) to determine that the loan term was 1,397 days.
This package also provides two command lin scripts. obol
performs conversion and simple math:
$ obol ๐
๐
๐
348d "1d 5.5b" 14T1800D4O
๐
๐
๐
= 25 talents
348d = ฮฮฮฮฮฮฮ๐
๐
๐
๐
1d 5.5b = ๐
ฮฮฮฮฮ๐
14T1800D4O = ๐
ฮคฮคฮคฮคฮง๐
ฮฮฮฮฮฮฮ
$ obol 1t + 1000d
ฮคฮง = 1t 1000d
$ obol 1t - 1000d
๐
= 5000d
logistes
does loan calculations:
$ logistes -p 50t -d 1397
๐
(50t) at 10 drachmas per day for 1397 days = ฮคฮคฮง๐
ฮฮฮฮ๐
ฮฮ (2t 1970d) interest
$ logistes -p 50t -i ฮคฮคฮง๐
ฮฮฮฮ๐
ฮฮ
๐
(50t) at 10 drachmas per day for 1397 days = ฮคฮคฮง๐
ฮฮฮฮ๐
ฮฮ (2t 1970d) interest
$ logistes -d 1397 -i ฮคฮคฮง๐
ฮฮฮฮ๐
ฮฮ
๐
(50t) at 10 drachmas per day for 1397 days = ฮคฮคฮง๐
ฮฮฮฮ๐
ฮฮ (2t 1970d) interest
Contributing
Bug reports and pull requests are welcome on GitHub at https://github.com/seanredmond/akrophonobolos
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