Bank Account Validator

Python implementation for bank account validation.

Currently, the biggest Brazilian banks are implemented - and so being validated. There is no other countries’ banks implemented, but the code is modular and it can be done easily.

Usage:

from bank_account_validator.core import Bank
bank_class = Bank.get('bank_code', 'country_code')
bank_class(branch='branch', branch_digit='branch_digit',
           account='account', account_digit='account_digit').execute()

Examples:

from bank_account_validator.core import Bank, BrazilianBank

# Account below is correct, so nothing is raised by calling execute()
bank_class = Bank.get('237', 'BR')
bank_class(branch='1769', branch_digit='8', account='200040', account_digit='7').execute()

# Account below has invalid branch so InvalidBranch will be raised
bank_class = BrazilianBank.get('237')
bank_class(branch='1769', branch_digit='0', account='200040', account_digit='7').execute()
# InvalidBranch: Branch "1769-0" is wrong.

# Account below has invalid account so InvalidAccount will be raised
bank_class = BrazilianBank.get('237')
bank_class(branch='1769', branch_digit='8', account='200040', account_digit='0').execute()
# InvalidAccount: Account "0200040-0" is wrong.

# Sometimes there is not an unitary validation for both branch and account
# I mean, the full combination is evaluated at once.
bank_class = BrazilianBank.get('033')
bank_class(branch='2006', branch_digit='', account='01008407', account_digit='1').execute()
# InvalidBranchAndAccountCombination: Combination (branch="2006", account="01008407-1") does not match.

# It also validates wether digits must be supplied or not, as well as branch/account lengths
bank_class = BrazilianBank.get('237')
bank_class(branch='111769', branch_digit='8', account='200040', account_digit='7').execute()
# InvalidBranchlength: For bank code "237", branches length must be 4.

bank_class(branch='1769', branch_digit='8', account='11200040', account_digit='7').execute()
# InvalidAccountlength: For bank code "237", accounts length must be 7.

bank_class(branch='1769', branch_digit='', account='200040', account_digit='7').execute()
# MissingBranchDigit: For bank code "237", branches must have a digit, of length 1.

bank_class(branch='1769', branch_digit='11', account='200040', account_digit='7').execute()
# UnexpectedBranchDigit: For bank code "237", branches must have 1 digits.

bank_class(branch='1769', branch_digit='8', account='200040', account_digit='').execute()
# MissingAccountDigit: For bank code "237", accounts must have a digit, of length 1.

bank_class(branch='1769', branch_digit='8', account='200040', account_digit='11').execute()
# UnexpectedAccountDigit: For bank code "237", accounts must have 1 digits.