currex 0.1.1

A Pythonic currency calculator with real-time exchange rates

Currex

A Pythonic currency calculator that makes working with currencies and exchange rates simple and smooth.

I often use Python as a command-line calculator. Yet, I need to go back to Google Search to convert between curriencies. So, for my own convenience, I created this library.

It is inteded to be used interactive python sessions (such as Jupyter Notebook, IPython, etc.) to get ballpark estimates of prices - e.g. when travelling, buying online, etc.

It is NOT intended to be used in production code. Every API design decision I made was to make it as simple as possible to use it in interactive sessions.

EVEN MORE IMPORTANT: Never use it for any important decisions - taxes, investments, etc. There is not quarantee that the exchange rates are correct.

Installation

pip install currex

Usage

from currex import *

# use currencies as if they were numbers
100 * USD  # USD(100)
12 * USD(100)  # USD(1200)

# convert currencies to other currencies
USD(100).to(EUR)  # EUR(85.3)
USD(100).to(PLN)  # PLN(430.5)

# this syntax is also supported
PLN(EUR(12))  # PLN(51.3312)

# add different currencies
USD(100) + EUR(100)  # USD(203.50500)
EUR(100) - USD(100)  # EUR(2.60500)

# divide currencies
USD(2) / JPY(14)  # 22.531428526365715

Features

• Arithmetic operations with currencies
• Currency conversion
• Autocasting - when using a few currencies, automatically convert them to the first one

Requirements

• Python 3.10 or higher
• Internet connection for real-time exchange rates - it uses HexaRate

TODO

• Installation with PyPI
• Mock API for testing
• More backends for exchange rates

License

MIT License by Piotr Migdał