Python-flask generated model class skips validation when parameters passed via constructor

Description

I noticed that when constructing an object from an autogenerated class that validations were not done by default.

Swagger-codegen version

java -jar swagger-codegen-cli.jar version
2.2.2

Swagger declaration file content or url

Command line used for generation

java -jar ../swagger-codegen-cli.jar generate -l python-flask -i /ws/mdear-ott/Projects/S3/qmgr/qmgr_api.yaml -c ../generate_options_server.json

pip list
amqp (1.4.6)
amqplib (1.0.2)
AMQPQueue (0.4.2)
anyjson (0.3.3)
APScheduler (3.0.1)
astroid (1.3.2)
backports.ssl-match-hostname (3.4.0.2)
billiard (3.3.0.19)
Candygram (1.0)
celery (3.1.17)
certifi (14.05.14)
CoronaAPI (1.3.0)
crontab (0.20.2)
cx-Oracle (5.1.2)
decorator (3.4.0)
desktop (0.4.2)
distribute (0.7.3)
Django (1.7.1)
ecdsa (0.11)
enum34 (1.0.4)
flower (0.7.3)
FormEncode (1.3.0a1)
frosted (1.4.1)
futures (2.2.0)
fysom (2.0.1)
http-parser (0.8.3)
httplib2 (0.9)
ipaddress (1.0.7)
ipython (2.3.1)
jenkins (1.0.2)
jenkinsapi (0.2.25)
Jinja2 (2.7.3)
kombu (3.0.24)
lockfile (0.10.2)
locknix (1.0.3)
logilab-common (0.63.2)
lxml (3.4.1)
MarkupSafe (0.23)
MySQL-python (1.2.5)
MySQLObject (1.3.1)
ndg-httpsclient (0.4.2)
netaddr (0.7.12)
oauth2 (1.5.211)
oauthlib (0.7.2)
ordereddict (1.1)
paramiko (1.15.1)
pexpect (3.3)
pies (2.6.1)
pies2overrides (2.6.1)
pip (1.5.6)
ply (3.4)
progressbar (2.2)
protobuf (2.6.1)
psutil (2.1.3)
pyasn1 (0.1.9)
pycrypto (2.6.1)
pylint (1.4.0)
pymongo (2.7.2)
PyOpenGL (3.1.0b3)
pyOpenSSL (16.2.0)
pyotp (1.4.1)
pysqlite (2.6.3)
python-daemon (1.6.1)
python-dateutil (2.3)
python-jenkins (0.2)
python-ldap (2.3.13)
pytz (2014.10)
PyYAML (3.11)
requests (2.5.0)
requests-oauth2 (0.2.0)
restkit (4.2.2)
setuptools (7.0)
simplejson (3.6.5)
six (1.8.0)
socketpool (0.5.3)
South (1.0.1)
SQLAlchemy (0.9.8)
sqlite3dbm (0.1.4)
SQLObject (1.7.0)
sqlsoup (0.9.0)
suds-jurko (0.6)
tornado (4.0.2)
Twisted (14.0.2)
tzlocal (1.1.2)
validictory (1.0.0a2)
virtualenv (1.11.6)
web.py (0.37)
wsgiref (0.1.2)
xmlrunner (1.7.7)
zope.interface (4.1.1)

Generated code

CommonReturnModel(Model):
"""
NOTE: This class is auto generated by the swagger code generator program.
Do not edit the class manually.
"""
def init(self, message: str=None, code: str=None):
"""
CommonReturnModel - a model defined in Swagger

    :param message: The message of this CommonReturnModel.
    :type message: str
    :param code: The code of this CommonReturnModel.
    :type code: str
    """
    self.swagger_types = {
        'message': str,
        'code': str
    }

    self.attribute_map = {
        'message': 'message',
        'code': 'code'
    }

    self._message = message
    self._code = code

Steps to reproduce

from qmgr_svr.models.common_failure_return_model import CommonFailureReturnModel

The following should fail validation but does not raise an exception (silently fails):
obj = CommonReturnModel(code="wrong", message="Something bad happened")

In contrast, the following raises an exception:
obj = CommonReturnModel()
obj.code="wrong"
*** ValueError: Invalid value for code (wrong), must be one of ['SUCCESS', 'FAILURE']

Related issues

Suggest a Fix

Reproduce the issue with the supplied python-flask generation command and inspect qmgr_svr/models/common_failure_return_model.py, comparing constructor behavior with assignment to code. Trace the generator template responsible for CommonReturnModel.init; done means invalid constructor parameters trigger the same validation failure as later attribute assignment.