README.md

CarRepairCodingChallenge

Pre-requites

• python 2.7
• Django 1.4

Local Setup Environment

• Install pip

  • sudo apt-get install python-pip

• Install django

  • sudo pip install django=1.4

• Install git

  • sudo apt-get install git

• Install numpy

  • pip install numpy

• Checkout AgathosChallenge from github

  • git clone https://github.com/osg9c1/CarRepairCodingChallenge.git
  • cd AgathosChallenge/lengthOfService

• python manage.py syncdb

• python manage.py runserver

• Browse http://localhost:8000/admin/upload_seed to Upload a CSV file

  • http://localhost:8000/admin/download_seed/ to Download a CSV file with randomly generated records
  • http://localhost:8000/admin/lengthOfService/shopworkflowfact/ to see ShopWorkFlowFact django admin view (admin credentials- username: admin password:password)

Heroku Link

• The app is also setup on heroku - http://limitless-inlet-23271.herokuapp.com/admin/upload_seed/

Assumptions

• Every job is considered mutually independent and Length of Service is computed as Pickup Date - Dropoff Date + 1,

Computation of Average LOS and Ratio with National Average :

* Average LOS  = Sum(los for each  (mechanic, repair type) ) / No. of records for (mechanic, repair type)

Ranking Metrics:

• Repair type : Ranking each repair type separately
• Ratio of Average: Ranking by ratio of average in descending order.

Seed File

• The seed file being used for every transaction is stored in lengthOfService/seed.csv.

Run the Calculations from UI:

• Upload the Seed File http://localhost:8000/admin/upload_seed and submit, you can see the output in a tabular format.

Run the Calculations from Shell:

• place/replace the seed file as seed.csv in the lengthOfService folder
• python manage.py shell
• from print_to_screen import *
• write_to_shell()

Run the Tests

• python manage.py test lengthOfService.LosComputationTest.compute_los_test