from django.contrib.auth import authenticate

def some_view(request):
    user = authenticate(username='john', password='secret')
    
    if user is not None:
        # the password verified for the user
        if user.is_active:
            print("User is valid, active and authenticated")
        else:
            print("The password is valid, but the account has been disabled!")
    else:
        # the authentication system was unable to verify the username and password
        print("The username and password were incorrect.")

from django.contrib.auth.models import User

def some_view(request):
    u = User.objects.get(username='john')
    u.set_password('new password')
    u.save()

ref :-https://docs.djangoproject.com/en/1.5/topics/auth/default/#changing-passwords

from django.contrib.auth.models import User

def some_view(request):
    user = User.objects.create_user('john', 'lennon@thebeatles.com', 'johnpassword')
    # if you want to change other fields.
    user.last_name = 'Lennon'
    user.save()

ref:-https://docs.djangoproject.com/en/1.5/topics/auth/default/#creating-users

Open admin.py in app folder and past this code

from django.contrib import admin

from myapp.models import Person

admin.site.register(Person)

—

Person :- this is a class defined in models  (myapp/models.py)

Creating Django Project
Goto Terminal
Activate virtual environment *
$ django-admin.py startproject <project_name>

eg:- django-admin.py startproject myproject

This will create folder stricture like the bellow

myproject/
          |----: manage.py
          |----: myproject/
                    |---: __init__.py
                    |---: settings.py
                    |---: urls.py
                    |---: wsgi.py
          

How to run Django project

$ python manage.py runserver

How to Create an App

$ python manage.py startapp <app_name>

eg:-

$ python manage.py startapp myapp

This will create folder stricture like the bellow

myproject/
          |----: manage.py
          |----: myproject/
                    |---: __init__.py
                    |---: settings.py
                    |---: urls.py
                    |---: wsgi.py
          |----: myapp/
                    |---: __init__.py
                    |---: admin.py
                    |---: models.py
                    |---: test.py
                    |---: views.py

 
add project in settings.py (myproject/myproject/settings.py and add app name in INSTALLED_APP)

# Application definition

INSTALLED_APPS = (
    #default settings
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',

    #settings we need to add
    'myapp'
)

How to implement model

add model details in models.py  (eg:- /myproject/myapp/models.py)

class Person(models.Model):
name = models.CharField(max_length=200)
adderess = models.TextField()
reg_date = models.DateTimeField(‘date registerd’)

def __str__(self):
return self.name

in the above example Person will be table name and all the variables inside the class will be the table field name (name, adderss,reg_date), by default django will create sqlite datablse (default database settings in settings.py)

# Database
# https://docs.djangoproject.com/en/1.6/ref/settings/#databases
DATABASES = {
‘default’: {
‘ENGINE’: ‘django.db.backends.sqlite3’,
‘NAME’: os.path.join(BASE_DIR, ‘db.sqlite3’),
}
}

ref:-https://docs.djangoproject.com/en/dev/topics/db/models/

$ python manage.py sql polls

$ python manage.py syncdb

$ python manage.py runserver

Installing an official release with pip

Goto terminal
Activate virtual environment *
pip install Django

Installation doc:- https://docs.djangoproject.com/en/dev/topics/install/#installing-official-release

Doc :- https://docs.djangoproject.com/en/dev/contents/