Data Science

Akhil Chand — Sun, 26 Jan 2020 12:15:57 +0000

Started my journey learning Data Science course. Any suggestions!?
Please share your journey to become successful Data Scientist.

Datascience #datascientist #SAS

This works!

Akhil Chand — Thu, 24 Oct 2019 12:13:24 +0000

Oh god, I just saw
i-=-1
as a means to do
i = i + 1

(yes, it works) ;)

Step-by-step procedure to post your Django project on GitHub

Akhil Chand — Sun, 20 Oct 2019 01:03:13 +0000

Open your project folder.
Create a virtual environment
Virtual environment isolates our project. Anything we install within the virtual environment does not affect the rest

of the computer and vice-versa.

on cmd: vitualenv . (to install virtual environment)
Activate the virtual environment by running activate.bat files within the scripts folder.

git status git commands

git init

This creates a .git folder on our project folder that means git is initialized.

git status

This shows all the folders that are not added to git.

git add -all

This adds all the files to git.

git commit -m "commit message"

This commits all folders to git.

git log

This shows the log of all commits in our repository. This displays most recent commits first.

Now we need to push our existing repository. First, we will need to add push our remote origin which is our remote
repository that we created on GitHub. Copy the HTTPs web URL and paste in cmd.
git remote add origin weburl
Now, we will need to push our local repository to our remote repository or GitHub account we use.
git push -u origin master
In case we get an error 'failed to push some reps to weburl, run below commands
git pull --rebase origin master
git push origin master
Now we can see your project on your GitHub repository.
```
                 *** THANK YOU ***
```

Step-by-step procedure to post your project to Publicly accessible Heroku Server

Akhil Chand — Sat, 19 Oct 2019 00:29:31 +0000

Open your project folder
install pipenv
on cmd: pip install pipenv
Install git ( check git --version)
Install Heroku CLI (Heroku Command Line Interface)
Can be installed from 'Getting Started on Heroku with Python' web page.
After installing, open cmd and enter 'Heroku login' and enter login credentials same as our Heroku account login.
This will log in Heroku, which is a sign that Heroku is properly installed on our computer.
Create a virtual environment
Virtual environment isolates our project. Anything we install within the virtual environment does not affect the rest

of the computer and vice-versa.

on cmd: vitualenv . (to install virtual environment)
Activate the virtual environment by running activate.bat files within the scripts folder.
Check which version Django, requests you have and install it
On cmd: pip install django==2.1.11 (to install Django on our virtual environment)
On cmd: pip install requests==2.19.1 (to install requests package on our virtual environment)
Run manage.py and then stop it
on cmd: python manage.py runserver (this runs our project locally)
Now Django Heroku requires Procfile
type 'web: gunicorn projectname.wsgi' on Procfile
Install gunicorn
On cmd: pip install gunicorn

*'gunicorn' is required by Heroku to run our website on the server.

Install django-heroku
On cmd: pip install django-heroku
Add stuff to settings.py file
Add the following import statement to the top of settings.py:

import django_heroku

Then add the following to the bottom of settings.py:

Activate Django-Heroku.

django_heroku.settings(locals())

pip freeze > requirements.txt
Whenever we upload something to Heroku, it goes to requirements.txt file and it installs the requirements on the server.
On cmd: pip freeze (this displays the packages needed on the Heroku server.
On cmd: pip freeze > requirements.txt (this creates a new file on your project folder which contains all the requirements

that are needed by Heroku to install.

To create an app on heroku
On cmd: Heroku create subdomainname (choose the name as you wish)
This creates the app with the name you give. This can be verified by opening our Heroku account dashboard.
git status git commands
git init

This creates a .git folder on our project folder that means git is initialized.

git status

This shows all the folders that are not added to git.

git add -all

This adds all the files to git.

git commit -m "commit message"

This commits all folders to git.

Now we have to set remote to Heroku using below command.

heroku git:remote -a subdomainname

git push heroku master

This command pushes files to Heroku server.

Open up the website from subdomainname.herokuapp.com on the browser.
Admin panel not working. heroku run bash. Migrations
Now create superuser to access admin panel. To create superuser follow below steps:

On cmd: heroku run bash (This will give access to files uploaded on Heroku Server)

bash gives access to files uploaded in Heroku server.

$ls - shows directories inside Linux

$python manage.py migrate (runs migrations)

$python manage.py createsuperuser (To create superuser)

Now we can log in to administrator panel using below link

subdomainname.herokuapp.cpm/admin/

To update any files on the project (ex: HTML pages) and push changes to Heroku server

On cmd: git status (shows updated or new files added)

git add -all

git commit -m "commit message"

git push heroku master

Now your web app is live on Heroku Server
```
          *** THANK YOU ***
```