from datetime import datetime


def validate(date_text: str):
    if not isinstance(date_text, str):
        return date_text
    ret = date_text
    for form in ["%d-%m-%Y", "%d/%m/%Y", "%m/%Y", "%m-%Y"]:
        try:
            ret_form = '%d.%m.%Y'
            if '%d' not in form:
                ret_form = ret_form.replace('%d.', '')
            ret = datetime.strptime(date_text, form).strftime(ret_form)
        except ValueError as err:
            pass
    return ret

# def validate(date_text: str, return_format='%d.%m.%Y'):
#     try:
#         data = parse(date_text, dayfirst=True, )
#         print(data.day)
#         return data.strftime(return_format)
#     except ValueError as err:
#         print("Incorrect data format", err)
#     return date_text


if __name__ == '__main__':
    print(validate('2003-12-23'))
    # print(validate('2003-12-32'))
    print(validate('2003-12-23'))
    # print(parse('2003-12-32'))
    print(validate('23-12-2003'))
    print(validate('23/12/2003'))
    print(validate('12/23/2003'))
    print(validate('05/04/2003'))
    print(validate('04/2003'))