SImple password policy checker.

passwordPolicy.py

import string


def minLengthCriterion(minLength):
    def f(password):
        return len(password) > minLength
    return f


def hasCharInGroup(text, group):
    ret = False
    for c in text:
        if c in group:
            ret = True
            break
    return ret


def hasLowerCaseCriterion(password):
    return hasCharInGroup(password, string.ascii_lowercase)


def hasUpperCaseCriterion(password):
    return hasCharInGroup(password, string.ascii_uppercase)


def hasDigitCriterion(password):
    return hasCharInGroup(password, string.digits)


def checkPasswordPolicy(password, criteria):
    passed = True
    for criterion in criteria:
        if not criterion(password):
            passed = False
            break

    return passed


################################################################################
# Example:

password = "abacate1"
criteria = [
    minLengthCriterion(6),
    hasDigitCriterion,
    hasLowerCaseCriterion,
    hasUpperCaseCriterion
]

print(checkPasswordPolicy(password, criteria))