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Gotta get schwifty with your IBANs

schwifty is a Python library that lets you easily work with IBANs and BICs as specified by the ISO. IBAN is the International Bank Account Number and BIC the Business Identifier Code. Both are used for international money transfer.

Features

schwifty lets you

  • validate check-digits and the country specific format of IBANs

  • validate the national check digits of the BBAN for more than 20 countries

  • validate format and country codes from BICs

  • generate BICs from country and bank-code

  • generate IBANs from country-code, bank-code and account-number.

  • generate random valid IBANs

  • look up the bank and BIC of an IBAN’s bank-code in registries for 47 countries, generated from the official sources where they are available

  • identify retired bank codes that IBANs in circulation still carry, and tell whether their bank merged into another one or closed

  • access all relevant components as attributes

See the docs for more information.

Versioning

Since the IBAN specification and the mapping from BIC to bank_code is updated from time to time, schwifty uses CalVer for versioning with the scheme YY.0M.Micro.

Installation

To install schwifty, simply:

$ pip install schwifty

Development

The only prerequisite to work on schwifty is uv. Running uv sync creates a virtual environment with all development dependencies (including the tools mentioned below).

We use ruff as code formatter and linter. This avoids discussions about style preferences in the same way as gofmt does the job for Golang. The conformance to the formatting rules is checked in the CI pipeline, so that it is recommendable to install the configured prek-hook, in order to avoid long feedback-cycles.

$ uv sync --all-groups --all-extras
$ uv run prek install

You can also run uv run poe fmt to format the code or use one of the available editor integrations. See the contributing guide for the full list of development commands and the contribution workflow.

Project Information

schwifty is released under MIT license and its documentation lives at Read the Docs. The code is maintained on GitHub and packages are distributed on PyPI

Name

Since swift and swiftly were already taken by the OpenStack-project, but we somehow wanted to point out the connection to SWIFT, Rick and Morty came up with the idea to name the project schwifty.

https://i.cdn.turner.com/adultswim/big/video/get-schwifty-pt-2/rickandmorty_ep205_002_vbnuta15a755dvash8.jpg

Metadata

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