I gave created a model and trying to validate the model but i am getting the following errors:
I am a new programmer in Python and django. please help me i cant trace the problems.

Ambrose, email: ambokello@gmail.com

D:\Programming\Python\Django\ambosite>python manage.py validate
Traceback (most recent call last):
File "manage.py", line 14, in <module>
execute_manager(settings)
File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line
438, in execute_manager
utility.execute()
File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line
379, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "C:\Python27\lib\site-packages\django\core\management\base.py", line 191,
in run_from_argv
self.execute(*args, **options.__dict__)
File "C:\Python27\lib\site-packages\django\core\management\base.py", line 219,
in execute
self.validate()
File "C:\Python27\lib\site-packages\django\core\management\base.py", line 249,
in validate
num_errors = get_validation_errors(s, app)
File "C:\Python27\lib\site-packages\django\core\management\validation.py", lin
e 35, in get_validation_errors
for (app_name, error) in get_app_errors().items():
File "C:\Python27\lib\site-packages\django\db\models\loading.py", line 146, in
get_app_errors
self._populate()
File "C:\Python27\lib\site-packages\django\db\models\loading.py", line 61, in
_populate
self.load_app(app_name, True)
File "C:\Python27\lib\site-packages\django\db\models\loading.py", line 78, in
load_app
models = import_module('.models', app_name)
File "C:\Python27\lib\site-packages\django\utils\importlib.py", line 35, in im
port_module
__import__(name)
File "D:\Programming\Python\Django\ambosite\..\ambosite\books\models.py", line
3, in <module>
class Publisher(models.Model):
File "D:\Programming\Python\Django\ambosite\..\ambosite\books\models.py", line
4, in Publisher
name = models.CharField(maxlength = 30)
File "C:\Python27\lib\site-packages\django\db\models\fields\__init__.py", line
545, in __init__
super(CharField, self).__init__(*args, **kwargs)
TypeError: __init__() got an unexpected keyword argument 'maxlength'

D:\Programming\Python\Django\ambosite>