

def validate_username(self, data, all_data=None):
    from uliweb.orm import get_model
    User = get_model('user')
    user = self.get((User.c.username == data))
    if user:
        return (_('User "%s" is already existed!') % data)

dataset/ETHPy150Open limodou/uliweb/uliweb/contrib/auth/forms.py RegisterForm.validate_username/VarMisuse@32/41 `User`->`self`