django - Unexpected behavior of static variables in python -

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• django models & python class attributes 4 answers

i learning django, here model have created

class userprofile(models.model):     name = models.charfield(max_length=50, verbose_name="name")     login = models.charfield(max_length=25, verbose_name="login")     password = models.charfield(max_length=100, verbose_name="password")     phone = models.charfield(max_length=20, verbose_name="phone number")      def __str__ (self):         return self.name 

since name static variable, in method __str__, can called this

    def __str__ (self):         return userprofile.name 

but when tried access variable using above method , following error

attributeerror @ /admin/tasksmanager/userprofile/ type object 'userprofile' has no attribute 'name' request method: request url:    http://127.0.0.1:8000/admin/tasksmanager/userprofile/ django version: 1.6 exception type: attributeerror exception value:     type object 'userprofile' has no attribute 'name' exception location: c:\users\x\django_book\work_manager\tasksmanager\models.py in __str__, line 18 python executable:  c:\users\x\django_book\scripts\python.exe python version: 3.4.3 python path:     ['c:\\users\\x\\django_book\\work_manager',  'c:\\windows\\system32\\python34.zip',  'c:\\users\\x\\django_book\\dlls',  'c:\\users\\x\\django_book\\lib',  'c:\\users\\x\\django_book\\scripts',  'c:\\python34\\lib',  'c:\\python34\\dlls',  'c:\\users\\x\\django_book',  'c:\\users\\x\\django_book\\lib\\site-packages'] server time:    thu, 7 jan 2016 23:10:34 +0530 

why ??

i applied same technique in following class, works fine

class rect:      status = "this test"      def __init__(self, l, b):         self.l = l         self.b = b      def something(self):         return rect.status 

why there contradiction ?

the django model not contain static variables. used metaclass define actual instance variables. can't access them through class.