xeBuz/Flask-Validator

""" Financial Validators
 
- ValidateCreditCard
- ValidateCurrency
- ValidateIBAN
"""
 
import re
import sys
from moneyed import get_currency, CurrencyDoesNotExist
from schwifty import IBAN, BIC
from flask_validator import Validator
 
 
class ValidateCreditCard(Validator):
 
    """ Validate Credit Card Number
 
    Check if the new value is a valid credit card number.
    Allowed formats:
       - XXXXYYYYWWWWZZZ
       - "XXXXYYYYWWWWZZZ"
       - "XXXX YYYY WWWW ZZZ"
       - "XXXX-YYYY-WWWW-ZZZ"
    Args:
        field: SQLAlchemy column to validate
        allow_null: (bool) Allow null values
        throw_exception: (bool) Throw a ValidateError if the validation fails
    """
 
    def check_value(self, value):
        n = re.sub(r'[\s-]', '', str(value))
        r = [int(ch) for ch in str(n)][::-1]
Missing whitespace after ','
Line too long (83 > 79 characters)
        return (sum(r[0::2]) + sum(sum(divmod(d*2,10)) for d in r[1::2])) % 10 == 0
 
 
class ValidateCurrency(Validator):
 
    """ Validate Currency
 
    Check if the new value is a valid Currency
    Validation provided by: https://github.com/limist/py-moneyed
 
    Args:
        field: SQLAlchemy column to validate
        allow_null: (bool) Allow null values
        throw_exception: (bool) Throw a ValidateError if the validation fails
    """
 
    def check_value(self, value):
        value = str(value)
        try:
            get_currency(value.upper())
            return True
        except CurrencyDoesNotExist:
            return False
 
 
class ValidateIBAN(Validator):
 
    """ Validate IBAN
 
    Check if the new value is a valid IBAN
 
    Args:
        field: SQLAlchemy column to validate
        allow_null: (bool) Allow null values
        throw_exception: (bool) Throw a ValidateError if the validation fails
    """
 
    def check_value(self, value):
        try:
            value = IBAN(value)
            return True
        except ValueError:
            return False
 
Expected 2 blank lines, found 1
class ValidateBIC(Validator):
 
    """ Validate BIC (Bank Identifier Code)
 
    Check if the new value is a valid Bank Identifier Code
 
    Args:
        field: SQLAlchemy column to validate
        allow_null: (bool) Allow null values
        throw_exception: (bool) Throw a ValidateError if the validation fails
    """
 
    def check_value(self, value):
        try:
            value = BIC(str(value))
            return True
        except ValueError:
No newline at end of file
            return False