multicurrency 0.1.0

Currency representation library.

multicurrency

Currency representation.

:warning: WARNING:

This module is still in Beta. Do not use it in production ready applications.

Currency format (representation) is not yet implemented.

Synopsis

The multicurrency module provides support for currency operations. It supports several different currencies.

The currencies supported by this module were created with information (alphabetic code, numeric code, and minor unit size) from ISO-4217.

Prerequisites

Python, version 3.9 or above, needs to be installed on your local computer. Python setup can be found here.

Installation

The simplest way to install this library is using pip:

pip3 install multicurrency

Usage

Simple usage example:

>>> from multicurrency import Euro
>>> euro = Euro(1000)
>>> print(euro)
€1.000,00
>>> print(euro + Euro(0.50))
€1.000,50

Unsupported currencies can be represented by creating a generic Currency object with the desired settings.

>>> from multicurrency import Currency
>>> bitcoin = Currency(
...     amount=1000,
...     currency='XBT',
...     symbol='Ƀ',
...     code='0',
...     decimal_places=8,
...     decimal_sign='.',
...     grouping_sign=',')
>>> print(bitcoin)
Ƀ1,000.00000000

To help working with unsupported currencies the settings can be defined in a dictionary and used when needed:

>>> from multicurrency import Currency
>>> settings = {
...     'currency':'XBT',
...     'symbol':'Ƀ',
...     'code':'0',
...     'decimal_places':8,
...     'decimal_sign':'.',
...     'grouping_sign':','}
>>> bitcoin = Currency(1000, **settings)
>>> print(bitcoin)
Ƀ1,000.00000000

Currencies can also be represented with the ISO 4217 three-letter code instead of the symbol.

>>> from multicurrency import Euro
>>> euro = Euro(1000, international=True)
>>> print(euro)
EUR 1.000,00

Precision

The multicurrency library has a user alterable precision (defaulting to 28 places) which can be as large as needed for a given problem:

>>> from multicurrency import CurrencyContext, Euro
>>> for precision in [1, 2, 3, 4, 5, 6]:
...     CurrencyContext.prec = precision
...     result = Euro(1) / 7
...     print(result.pstr(precision))
...
€0,1
€0,14
€0,143
€0,1429
€0,14286
€0,142857

It also has a user alterable rounding method (defaulting to ROUND_HALF_EVEN) which can be changed as needed:

>>> from multicurrency import CurrencyContext, Euro
>>> CurrencyContext.prec = 4
>>> for rounding in [
...         'ROUND_CEILING',
...         'ROUND_DOWN',
...         'ROUND_FLOOR',
...         'ROUND_HALF_DOWN',
...         'ROUND_HALF_EVEN',
...         'ROUND_HALF_UP',
...         'ROUND_UP',
...         'ROUND_05UP']:
...     CurrencyContext.rounding = rounding
...     result = Euro(1) / 7
...     print(f'{rounding:16}', result.pstr(4))
...
ROUND_CEILING    €0,1429
ROUND_DOWN       €0,1428
ROUND_FLOOR      €0,1428
ROUND_HALF_DOWN  €0,1429
ROUND_HALF_EVEN  €0,1429
ROUND_HALF_UP    €0,1429
ROUND_UP         €0,1429
ROUND_05UP       €0,1428

Supported rounding methods are described on the CurrencyContext class.

Operations

Several operations are supported by the several library classes.

• Absolute

  Produces the absolute value of a given currency.

  >>> from multicurrency import Euro
  >>> euro = abs(Euro(-2))
  >>> print(euro)
  €2,00
  

• Addiction

  Addiction is supported only between currencies of the same type.

  >>> from multicurrency import Euro
  >>> euro1 = Euro(2.5)
  >>> euro2 = Euro(3)
  >>> print(euro1 + euro2)
  €5,50
  

• Boolean

  Produces 'True' for values of currency other than zero. 'False' otherwise.

  >>> from multicurrency import Euro
  >>> bool(Euro(0))
  False
  >>> bool(Euro(1))
  True
  

• Ceiling

  Produces a new currency rounded up to the nearest integer.

  >>> from multicurrency import Euro
  >>> from math import ceil
  >>> print(ceil(Euro(1/7)))
  €1,00
  

• Copy

  Produces a copy of itself.

  >>> from multicurrency import Euro
  >>> from copy import copy
  >>> euro = copy(Euro(1/7))
  >>> print(euro)
  €0,14
  

• Division

  Produces a new currency with the value of the division of the currency by either an int, float, or Decimal.

  >>> from multicurrency import Euro
  >>> euro = Euro(7) / 2
  >>> print(euro)
  €3,50
  

• Divmod

  Produces a tuple consisting of the currencies with the quotient and the remainder of the division of the currency by either an int, float, or Decimal.

  >>> from multicurrency import Euro
  >>> q, r = divmod(Euro(7), 2)
  >>> print(q, r)
  €3,00 €1,00
  

• Float Produces a float with the value of the currency amount.

  >>> from multicurrency import Euro
  >>> float(Euro(1/7))
  0.14285714285714285
  

• Flooring

  Produces a new currency rounded down to the nearest integer.

  >>> from multicurrency import Euro
  >>> from math import floor
  >>> print(floor(Euro(7/2)))
  €3,00
  

• Floordiv

  Produces a new currency with the integral part of the quotient of the division of the currency by either an int, float, or Decimal.

  >>> from multicurrency import Euro
  >>> q = Euro(7) // 2
  >>> print(q)
  €3,00
  

• Hash

  Produces a hash representation of the Currency.

  >>> from multicurrency import Euro
  >>> hash(Euro(7))
  1166476495300974230
  

• Int Produces an int with the value of the currency amount.

  >>> from multicurrency import Euro
  >>> int(Euro(7/2))
  3
  

• Mod

  Produces a new currency with the value of the remainder of the division of the currency by either an int, float, or Decimal.

  >>> from multicurrency import Euro
  >>> r = Euro(7) % 2
  >>> print(r)
  €1,00
  

• Multiplication

  Multiplication is supported only between a currency and an int, float, or Decimal.

  >>> from multicurrency import Euro
  >>> print(Euro(2) * 2.5)
  €5,00
  

• Round

  Produces a new currency with the amount of the currency rounded to a given precision.

  >>> from multicurrency import Euro
  >>> r = round(Euro(1/7), 3)
  >>> print(r.amount)
  0.143
  

• Subtraction

  Subtraction is supported only between currencies of the same type.

  >>> from multicurrency import Euro
  >>> euro1 = Euro(2)
  >>> euro2 = Euro(3)
  >>> print(euro1 - euro2)
  €-1,00
  

• Other Operations

  This library also supports the basic comparison operations between two objects of the same currency.

  >>> from multicurrency import Euro
  >>> euro1 = Euro(2)
  >>> euro2 = Euro(3)
  >>> euro1 > euro2
  False
  >>> euro1 >= euro2
  False
  >>> euro1 < euro2
  True
  >>> euro1 <= euro2
  True
  >>> euro1 == euro2
  False
  >>> euro1 != euro2
  True
  

Supported Currencies

List of supported currencies (and default format):

Afghani (Af1.000,00), AlgerianDinar (د.ج1.000,00), ArgentinePeso ($1.000,00), ArmenianDram (Դ1,000.00), ArubanFlorin (ƒ1,000.00), AustralianDollar ($1,000.00), AzerbaijanianManat (ман1.000,00), BahamianDollar ($1,000.00), BahrainiDinar (ب.د1,000.000), Baht (฿1,000.00), Balboa (B/.1.000,00), BarbadosDollar ($1.000,00), BelarusianRuble (Br1.000,00), BelizeDollar ($1,000.00), BermudianDollar ($1,000.00), BolivarFuerte (Bs F1.000,00), Boliviano (Bs.1,000.00), BrazilianReal (R$1.000,00), BruneiDollar ($1,000.00), BulgarianLev (лв1.000,00), BurundiFranc (₣1.000), CFAFrancBCEAO (₣1.000), CFAFrancBEAC (₣1.000), CFPFranc (₣1.000), CanadianDollarEN ($1,000.00), CanadianDollarFR ($1.000,00), CapeVerdeEscudo ($1.000,00), CaymanIslandsDollar ($1,000.00), Cedi (₵1.000,00), ChileanPeso ($1.000), ColombianPeso ($1.000,00), CongoleseFranc (₣1.000,00), CordobaOro (C$1.000,00), CostaRicanColon (₡1.000,00), CroatianKuna (Kn1.000,00), CubanPeso ($1,000.00), CzechKoruna (Kč1.000,00), Dalasi (D1.000,00), DanishKrone (kr1.000,00), Denar (ден1,000.00), DjiboutiFranc (₣1.000), Dobra (Db1.000,00), DominicanPeso ($1,000.00), Dong (₫1.000), EastCaribbeanDollar ($1,000.00), EgyptianPound (£1,000.00), EthiopianBirr (1.000,00), Euro (€1.000,00), FalklandIslandsPound (£1.000,00), FijiDollar ($1.000,00), Forint (Ft1.000), GibraltarPound (£1.000,00), Gourde (G1.000,00), Guarani (₲1.000), GuineaFranc (₣1.000), GuyanaDollar ($1.000,00), HongKongDollar ($1,000.00), Hryvnia (₴1.000,00), IcelandKrona (Kr1.000), IndianRupee (₹1,000.00), IranianRial (﷼1,000.00), IraqiDinar (ع.د1.000,000), JamaicanDollar ($1,000.00), JordanianDinar (د.ا1,000.000), KenyanShilling (Sh1,000.00), Kina (K1.000,00), Kip (₭1.000,00), KonvertibilnaMarka (КМ1,000.00), KuwaitiDinar (د.ك1,000.000), Kwacha (MK1.000,00), Kwanza (Kz1.000,00), Kyat (K1.000,00), Lari (ლ1.000,00), LebanesePound (ل.ل1 000), Lek (L1.000,00), Lempira (L1,000.00), Leone (Le1.000,00), Leu (L1.000,00), LiberianDollar ($1.000,00), LibyanDinar (ل.د1.000,000), Lilangeni (L1,000.00), Loti (L1.000,00), MalagasyAriary (1.000), MalaysianRinggit (RM1,000.00), Manat (m1.000,00), MauritiusRupee (₨1,000.00), Metical (MTn1.000), MexicanPeso ($1,000.00), MoldovanLeu (L1.000,00), MoroccanDirham (د.م.1.000,00), Naira (₦1.000,00), Nakfa (Nfk1.000,00), NamibiaDollar ($1.000,00), NepaleseRupee (₨1,000.00), NewIsraeliShekel (₪1,000.00), NewZealandDollar ($1,000.00), Ngultrum (1.000,00), NorthKoreanWon (₩1.000,00), NorwegianKrone (kr1.000,00), NuevoSol (S/.1,000.00), Ouguiya (UM1.000,00), PZloty (zł1.000,00), PakistanRupee (₨1,000.00), Pataca (P1.000,00), Paanga (T$1,000.00), PesoUruguayo ($1.000,00), PhilippinePeso (₱1,000.00), PoundSterling (£1,000.00), Pula (P1.000,00), QatariRial (ر.ق1.000,00), Quetzal (Q1.000,00), Rand (R1 000.00), RialOmani (ر.ع.1,000.000), Riel (៛1.000,00), Rufiyaa (ރ.1.000,00), Rupiah (Rp1.000,00), RussianRuble (р.1.000,00), RwandaFranc (₣1.000), SaintHelenaPound (£1.000,00), SaudiRiyal (ر.س1,000.00), SerbianDinar (din1.000,00), SeychellesRupee (₨1.000,00), SingaporeDollar ($1,000.00), SolomonIslandsDollar ($1.000,00), Som (1.000,00), SomaliShilling (Sh1.000,00), Somoni (ЅМ1.000,00), SouthKoreanWon (₩1,000), SriLankaRupee (Rs1.000,00), SudanesePound (£1.000,00), SurinameDollar ($1.000,00), SwedishKrona (kr1.000,00), SwissFranc (₣1'000.00), SyrianPound (ل.س1.000,00), TaiwanDollar ($1.000,00), Taka (৳1,000.00), Tala (T1.000,00), TanzanianShilling (Sh1,000.00), Tenge (〒1.000,00), TrinidadandTobagoDollar ($1.000,00), Tugrik (₮1.000,00), TunisianDinar (د.ت1.000,000), TurkishLira (₤1,000.00), UAEDirham (د.إ1,000.00), USDollar ($1,000.00), UgandaShilling (Sh1.000), UzbekistanSum (1.000,00), Vatu (Vt1,000), YemeniRial (﷼1.000,00), Yen (¥1,000), Yuan (¥1,000.00), ZambianKwacha (ZK1.000,00), ZimbabweDollar ($1.000,00)

Build (from source)

GNU make is used to automate several steps of the development process.

All of the commands described bellow are to be executed on the root folder of this project.

A development environment can be created using the following command:

make dev

After creating the development environment activate the virtual enviroment that was created using the following command:

source venv/bin/activate

To build a Python package for this library use the following command:

make build

After this you should have a wheel file (*.whl) inside a folder called dist.

You can now leave the virtual environment used to crete the Python package. Use the following command for that:

deactivate

The library can be install using the wheel file and pip3:

pip3 --quiet install dist/multicurrency-*.whl

Contributing

1. Fork it!
2. Create your feature branch: git checkout -b my-new-feature
3. Commit your changes: git commit -am 'Add some feature'
4. Push to the branch: git push origin my-new-feature
5. Submit a pull request

Please read the CONTRIBUTING.md file for more details on how to contribute to this project.

Versioning

This project uses SemVer for versioning. For the versions available, see the tags on this repository.

Authors

• Frederico Martins - fscm

See also the list of contributors who participated in this project.

License

This project is licensed under the MIT License - see the LICENSE file for details