python

#Creating a virtual environment

-- pip install virtualenv
-- python -m venv env

OR

-- python3 -m venv env

#Activate an environment 

-- source env/bin/activate 

#To deactivate an environment

-- deactivate

#Creating a project

-- pipenv install django djangorestframework django-rest-knox
-- django-admin startproject leadmanager
-- python manage.py startapp leads
-- Go into leadmanager folder > vim settings > add leads + rest_frameworks under installed apps
-- cd ..
-- python manage.py makemigrations leads
-- python manage.py migrate (add everything to the database/create the tables)

#Creating a python serializer
-- cd leads

#Django Issue

-- There might be some issue with respect to disallowed hosts
-- Go to project settings.py
-- add requisite IP e.g. 10.150.50.10 into the allowedHost section

ALSO

-- run the ./manage.py runserver 0.0.0.0:8000 

#using regular expressions and raw strings

raw strings are strings that don't pay attention to attributes such as new lines or tabs

e.g.

print("new line \n") == This will create a new line automatically

BUT 

print(r"new lin\n") == The r converts the string into a raw string meaning, python will neglect the new tab directive

#PRINT without .format

print(f'this is a sample test {variable_to_be_inserted} ...'')

#using the requests method
-- the 'wb' is meant for 'writing bytes'
-- to get connents of a webpage in bytes, use the 'content' attribute
-- r.text - this returns the contents of a website in UNICODE