Greek TIN/AFM Validator and Generator

Validate and generate Greek TIN (Tax Identification Number) / AFM (Αριθμός Φορολογικού Μητρώου). Generation function can create valid or invalid numbers including parameters for old format, individuals, legal entities and repet tolerance digits control.

Online demo and presentation

https://lytrax.io/blog/projects/greek-tin-validator-generator

Installation

pip install lytrax-afm

Usage

Import functions:

from lytrax_afm import validateAFM, \
    generateAFM, \
    generateValidAFM, \
    generateInvalidAFM

Validate a number:

>>> validate_afm("090000045")
True

>>> validate_afm("123456789")
False

Generate a valid number:

>>> generate_valid_afm()
'731385437'

Generate an invalid number:

>>> generate_invalid_afm()
'853003357'

API

validate_afm

• afm: str - A string to be check if it's a valid AFM
• extended_result: bool, optional - Return extended object result if True, single boolean otherwise (default is False)
• Returns: str or dict (Dictionary with 'valid': boolean and 'error': str ('length' or 'nan' or 'zero' or 'invalid'))

Example:

>>> validate_afm("ab1234", extended_result=True)
{'valid': False, 'error': 'length'}

generate_afm

• force_first_digit: int, optional - If specified, overrides all pre99, legalEntity and individual (default is None)
• pre99: bool, optional - Για ΑΦΜ πριν από 1/1/1999 (ξεκινάει με 0), (if True, overrides both legal_entity and individual) (default is False)
• individual: bool, optional - Φυσικά πρόσωπα, (ξεκινάει με 1-4) (default is False)
• legal_entity: bool, optional - Νομικές οντότητες (ξεκινάει με 7-9) (default is False)
• repeat_tolerance : int, optional - Number for max repeat tolerance (0 for no repeats, unspecified for no check) (default is None)
• valid: bool, optional - Generate valid or invalid AFM (default is True)
• Returns: str - A valid or invalid 9 digit AFM number

Example:

>>> generate_afm(force_first_digit=3, repeat_tolerance=1, valid=True)
'335151580'

generate_valid_afm - Same as generate_afm with valid parameter force and override to True

• Returns: str - A valid 9 digit AFM number

Example:

>>> generate_valid_afm(pre99=True)
'013583460'

generate_invalid_afm - Same as generate_afm with valid parameter force and override to False

• Returns: str - An invalid 9 digit AFM number

Example:

>>> generate_invalid_afm(legal_entity=True)
'780300643'

Test

Clone this repository, run test:

git clone https://github.com/clytras/afm-python.git && cd afm-python
python -m unittest discover -s './test' -v

Changelog

See CHANGELOG

License

MIT License - see the LICENSE file for details