Python Web Framework

Install Python & pip & virtualenv

  • Windows: Please find in from Home Page
  • Ubuntu: Please find it from Ubuntu setup
  • Python 3.4 (released March 2014) and Python 2.7.9 (released December 2014) ship with Pip.
  • You can simply use pip or pip3 install any package you need.

Install Django

Windows

  • Install django
    • create a folder virtualenvs within the location of python 3
    • create a new virtualenv named django18
    • Activate the new virtual env
    • Install Django 1.x.x (LTS version )
cd  /path/to/python3
cd  virtualenvs
virtualenv django18
cd django18
Scripts\activate
which python
pip install django==1.x.x

Create django project

  • SET PATH in current command promp
  • Navigate to workspace folder
  • Create new django project
  • Start the app
SET PATH=c:\apps\python3\virtualenvs\django18\Script;%PATH%
which django-admin
cd c:\ws\python\django\
django-admin startproject demo
cd demo
python manage.py runserver
  • Create a new app module

python manage.py startapp main

  • Create a new db

** following commands are just tested in django 1.8

python manage.py syncdb 
python manage.py makemigrations new_app 
## migrate 
pyrhon manage.py sqlmigrate new_app 0001 
## migrate 
python manage.py migrate new_app 0001
  • use python shell Model API
python manage.py shell
>>> from XXX.models import ModelClass
>>> ModelClass.objects.all()
>>> ModelClass.objects.get(pk =1 )
>>> ModelClass.objects.filter( fieldName1="abc")
>>> mc = new ModelClass.( fieldName1 = "abc", fieldName2="def", fieldName3 = 3 )
>>> mc.save()
>>> mc = ModelClass.objects.get(pd=1)
>>> mc.delete()    

Linux

pip install virtualenv
pip3 install virtualenv
cd ~
mkdir .envs

## create python2 env
virtualenv -p /usr/bin/python2.7 py2env
virtualenv -p /usr/bin/python3.4 py3env

cd py2env 
source bin/activate
## Check python path 
which python
## Exit
deactivate

  • Activate virtual environment need to use source instead of executing sh file