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    Django Lab1 Component

    Uploaded by

    sunil.ise
    DJANGO DATE AND TIME PROGRAM

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd

    Django Lab1 Component

    Uploaded by

    sunil.ise
    18 views5 pages
    DJANGO DATE AND TIME PROGRAM

    Copyright

    © © All Rights Reserved

    Available Formats

    PDF, TXT or read online from Scribd

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    DJANGO DATE AND TIME PROGRAM

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    18 views5 pages

    Django Lab1 Component

    Uploaded by

    sunil.ise
    DJANGO DATE AND TIME PROGRAM

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 5

    DEPT.

    OF AIML, JNNCE, SHIVAMOGGA

    SUBJECT: FULLSTACK DEVELOPMENT (21CS62)

    LAB COMPONENT SOLUTIONS


    Module-1: MVC based Web Designing
    Laboratory Component:
    1. Installation of Python, Django and Visual Studio code editors can be
    demonstrated.

    Python download and installation Link:


    https://www.python.org/downloads/
    Visual Studio Code download and installation link:
    https://code.visualstudio.com/
    Django installation:
    Open a command prompt and type following command:
    pip install django

    2. Creation of virtual environment, Django project and App should be


    demonstrated
    Follow these steps
    1. Install the Python extension.- Open VS Code IDE and click extensions there
    automatically u will be shown Python extension (Make sure you are connected
    to Internet)
    2. On your file system, create a project folder
    3. In that folder, use the following command (as appropriate to your computer)
    to create a virtual environment named env based on your current interpreter:
    # Windows
    python -m venv env
    4. Open the project folder in VS Code by running code ., or by running VS Code
    and using the File > Open Folder command.
    5. In VS Code, open the Command Palette (View > Command Palette or
    (Ctrl+Shift+P)). Then select the Python: Select Interpreter command:

    1|Pa ge
    DEPT. OF AIML, JNNCE, SHIVAMOGGA

    6. The command presents a list of available interpreters that VS Code can locate
    automatically (your list will vary; if you don't see the desired interpreter,
    see Configuring Python environments). From the list, select the virtual
    environment in your project folder that starts with ./env or .\env:
    7. Create a New Terminal : In Menu Terminal -> New Terminal option

    Creating project:
    1. Create a django project -

    Type following command in the terminal opened:


    django-admin startproject p .

    (dot following project name is important which refers to current directory)

    This startproject command assumes (by use of . at the end) that the current
    folder is your project folder, and creates the following within it:
    ● manage.py: The Django command-line administrative utility for the project.
    You run administrative commands for the project using python manage.py
    <command> [options].
    ● A subfolder named p which contains the following files:
    o init .py: an empty file that tells Python that this folder is a Python
    package.
    o wsgi.py: an entry point for WSGI-compatible web servers to serve your
    project. You typically leave this file as-is as it provides the hooks for
    production web servers.
    o settings.py: contains settings for Django project, which you modify in
    the course of developing a web app.
    o urls.py: contains a table of contents for the Django project, which you
    also modify in the course of development.
    2. To verify the Django project, make sure your virtual environment is
    activated, then start Django's development server using the

    2|Pa ge
    DEPT. OF AIML, JNNCE, SHIVAMOGGA

    command python manage.py runserver. The server runs on the default


    port 8000, and you see output like the following output in the terminal
    window:
    Verify server by typing:
    python manage.py runserver

    When you run the server the first time, it creates a default SQLite database in
    the file db.sqlite3, which is intended for development purposes but can be used
    in production for low-volume web apps. Also, Django's built-in web server is
    intended only for local development purposes. When you deploy to a web host,
    however, Django uses the host's web server instead. The wsgi.py module in the
    Django project takes care of hooking into the production servers.
    If you want to use a different port than the default 8000, specify the port
    number on the command line, such as python manage.py runserver 5000.
    3. When you're done, close the browser window and stop the server in VS
    Code using Ctrl+C as indicated in the terminal output window.
    4. In the VS Code Terminal with your virtual environment activated, run the
    administrative utility's startapp command in your project folder
    (where manage.py resides):

    python manage.py startapp lab1

    5. The command creates a folder called lab1 that contains a number of code
    files and one subfolder. Of these, you frequently work with views.py (that
    contains the functions that define pages in your web app)
    and models.py (that contains classes defining your data objects).
    The migrations folder is used by Django's administrative utility to manage
    database versions. There are also the files apps.py (app
    configuration), admin.py (for creating an administrative interface),
    and tests.py (for unit tests).

    3|Pa ge
    DEPT. OF AIML, JNNCE, SHIVAMOGGA

    3. Develop a Django app that displays current date and time in server

    In lab1 subfolder, make following changes to views.py:

    from django.shortcuts import render


    from django.http import HttpResponse

    # Create your views here.


    import datetime
    def current_datetime(request):
    now = datetime.datetime.now()
    html = "<html><body><h1>It is now %s.</h1></body></html>" % now
    return HttpResponse(html)

    In project named first, make following changes to urls.py


    from django.contrib import admin
    from django.urls import path
    from lab11.views import current_datetime
    urlpatterns = [

    path('cdt/', current_datetime),

    Output:

    4. Develop a Django app that displays date and time four hours ahead
    and four hours before as an offset of current date and time in server.

    In lab11 subfolder, make following changes to views.py:


    from django.shortcuts import render
    from django.http import HttpResponse

    # Create your views here.


    import datetime
    def current_datetime(request):
    now = datetime.datetime.now()

    4|Pa ge
    DEPT. OF AIML, JNNCE, SHIVAMOGGA

    html = "<html><body><h1>It is now %s.</h1></body></html>" % now


    return HttpResponse(html)
    def four_hours_ahead(request):

    dt = datetime.datetime.now() + datetime.timedelta(hours=4)
    html = "<html><body><h1>After 4hour(s), it will be %s.</h1>"% (dt,)
    return HttpResponse(html)

    def four_hours_before(request):

    dt = datetime.datetime.now() + datetime.timedelta(hours=-4)
    html = "<html><body><h1>Before 4 hour(s), it was %s.</h1>"% (dt,)
    return HttpResponse(html)

    In project named first, make following changes to urls.py


    from django.contrib import admin
    from django.urls import path
    from lab11.views import current_datetime,four_hours_ahead,four_hours_before
    urlpatterns = [

    path('cdt/', current_datetime),
    path('fhrsa/',four_hours_ahead),
    path('fhrsb/',four_hours_before),

    ]
    Output:

    5|Pa ge

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